105e627dcSAndy Fiddaman# tzdb data for South America and environs 205e627dcSAndy Fiddaman 3707182d7SNobutomo Nakano# This file is in the public domain, so clarified as of 4707182d7SNobutomo Nakano# 2009-05-17 by Arthur David Olson. 57c478bd9Sstevel@tonic-gate 66f8e8937SDan McDonald# This file is by no means authoritative; if you think you know better, 77c478bd9Sstevel@tonic-gate# go ahead and edit the file (and please send any changes to 86f8e8937SDan McDonald# tz@iana.org for general use in the future). For more, please see 96f8e8937SDan McDonald# the file CONTRIBUTING in the tz distribution. 107c478bd9Sstevel@tonic-gate 11dafc4501SDan McDonald# From Paul Eggert (2016-12-05): 1200973057SDan McDonald# 1300973057SDan McDonald# Unless otherwise specified, the source for data through 1990 is: 142f9aa4a7Srobbin# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 152f9aa4a7Srobbin# San Diego: ACS Publications, Inc. (2003). 1600973057SDan McDonald# Unfortunately this book contains many errors and cites no sources. 17a43ba736SRobert Mustacchi# 18dafc4501SDan McDonald# Many years ago Gwillim Law wrote that a good source 19dafc4501SDan McDonald# for time zone data was the International Air Transport 207c478bd9Sstevel@tonic-gate# Association's Standard Schedules Information Manual (IATA SSIM), 217c478bd9Sstevel@tonic-gate# published semiannually. Law sent in several helpful summaries 2200973057SDan McDonald# of the IATA's data after 1990. Except where otherwise noted, 2300973057SDan McDonald# IATA SSIM is the source for entries after 1990. 247c478bd9Sstevel@tonic-gate# 2500973057SDan McDonald# For data circa 1899, a common source is: 2600973057SDan McDonald# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 27b654b02dSYuri Pankov# https://www.jstor.org/stable/1774359 287c478bd9Sstevel@tonic-gate# 29dafc4501SDan McDonald# These tables use numeric abbreviations like -03 and -0330 for 304b8ee424SYuri Pankov# integer hour and minute UT offsets. Although earlier editions used 31dafc4501SDan McDonald# alphabetic time zone abbreviations, these abbreviations were 32dafc4501SDan McDonald# invented and did not reflect common practice. 337c478bd9Sstevel@tonic-gate 347c478bd9Sstevel@tonic-gate############################################################################### 357c478bd9Sstevel@tonic-gate 367c478bd9Sstevel@tonic-gate############################################################################### 377c478bd9Sstevel@tonic-gate 387c478bd9Sstevel@tonic-gate# Argentina 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate# From Bob Devine (1988-01-28): 417c478bd9Sstevel@tonic-gate# Argentina: first Sunday in October to first Sunday in April since 1976. 427c478bd9Sstevel@tonic-gate# Double Summer time from 1969 to 1974. Switches at midnight. 437c478bd9Sstevel@tonic-gate 446f8e8937SDan McDonald# From U. S. Naval Observatory (1988-01-19): 457c478bd9Sstevel@tonic-gate# ARGENTINA 3 H BEHIND UTC 467c478bd9Sstevel@tonic-gate 4780868c53Srobbin# From Hernan G. Otero (1995-06-26): 487c478bd9Sstevel@tonic-gate# I am sending modifications to the Argentine time zone table... 497c478bd9Sstevel@tonic-gate# AR was chosen because they are the ISO letters that represent Argentina. 507c478bd9Sstevel@tonic-gate 51f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 523508b934SYuri PankovRule Arg 1930 only - Dec 1 0:00 1:00 - 537c478bd9Sstevel@tonic-gateRule Arg 1931 only - Apr 1 0:00 0 - 543508b934SYuri PankovRule Arg 1931 only - Oct 15 0:00 1:00 - 557c478bd9Sstevel@tonic-gateRule Arg 1932 1940 - Mar 1 0:00 0 - 563508b934SYuri PankovRule Arg 1932 1939 - Nov 1 0:00 1:00 - 573508b934SYuri PankovRule Arg 1940 only - Jul 1 0:00 1:00 - 587c478bd9Sstevel@tonic-gateRule Arg 1941 only - Jun 15 0:00 0 - 593508b934SYuri PankovRule Arg 1941 only - Oct 15 0:00 1:00 - 607c478bd9Sstevel@tonic-gateRule Arg 1943 only - Aug 1 0:00 0 - 613508b934SYuri PankovRule Arg 1943 only - Oct 15 0:00 1:00 - 627c478bd9Sstevel@tonic-gateRule Arg 1946 only - Mar 1 0:00 0 - 633508b934SYuri PankovRule Arg 1946 only - Oct 1 0:00 1:00 - 647c478bd9Sstevel@tonic-gateRule Arg 1963 only - Oct 1 0:00 0 - 653508b934SYuri PankovRule Arg 1963 only - Dec 15 0:00 1:00 - 667c478bd9Sstevel@tonic-gateRule Arg 1964 1966 - Mar 1 0:00 0 - 673508b934SYuri PankovRule Arg 1964 1966 - Oct 15 0:00 1:00 - 687c478bd9Sstevel@tonic-gateRule Arg 1967 only - Apr 2 0:00 0 - 693508b934SYuri PankovRule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 - 707c478bd9Sstevel@tonic-gateRule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 713508b934SYuri PankovRule Arg 1974 only - Jan 23 0:00 1:00 - 727c478bd9Sstevel@tonic-gateRule Arg 1974 only - May 1 0:00 0 - 733508b934SYuri PankovRule Arg 1988 only - Dec 1 0:00 1:00 - 747c478bd9Sstevel@tonic-gate# 7580868c53Srobbin# From Hernan G. Otero (1995-06-26): 767c478bd9Sstevel@tonic-gate# These corrections were contributed by InterSoft Argentina S.A., 777c478bd9Sstevel@tonic-gate# obtaining the data from the: 786f8e8937SDan McDonald# Talleres de Hidrografía Naval Argentina 797c478bd9Sstevel@tonic-gate# (Argentine Naval Hydrography Institute) 807c478bd9Sstevel@tonic-gateRule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 813508b934SYuri PankovRule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 - 827c478bd9Sstevel@tonic-gate# 8380868c53Srobbin# From Hernan G. Otero (1995-06-26): 847c478bd9Sstevel@tonic-gate# From this moment on, the law that mandated the daylight saving 857c478bd9Sstevel@tonic-gate# time corrections was derogated and no more modifications 867c478bd9Sstevel@tonic-gate# to the time zones (for daylight saving) are now made. 877c478bd9Sstevel@tonic-gate# 887c478bd9Sstevel@tonic-gate# From Rives McDow (2000-01-10): 897c478bd9Sstevel@tonic-gate# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 907c478bd9Sstevel@tonic-gate# which did not result in the switch of a time zone, as they stayed 9 hours 917c478bd9Sstevel@tonic-gate# from the International Date Line. 923508b934SYuri PankovRule Arg 1999 only - Oct Sun>=1 0:00 1:00 - 93106fe065Srobbin# From Paul Eggert (2007-12-28): 94106fe065Srobbin# DST was set to expire on March 5, not March 3, but since it was converted 95106fe065Srobbin# to standard time on March 3 it's more convenient for us to pretend that 96106fe065Srobbin# it ended on March 3. 97106fe065SrobbinRule Arg 2000 only - Mar 3 0:00 0 - 987c478bd9Sstevel@tonic-gate# 997c478bd9Sstevel@tonic-gate# From Peter Gradelski via Steffen Thorsen (2000-03-01): 1006f8e8937SDan McDonald# We just checked with our São Paulo office and they say the government of 1017c478bd9Sstevel@tonic-gate# Argentina decided not to become one of the countries that go on or off DST. 1027c478bd9Sstevel@tonic-gate# So Buenos Aires should be -3 hours from GMT at all times. 1037c478bd9Sstevel@tonic-gate# 1046f8e8937SDan McDonald# From Fabián L. Arce Jofré (2000-04-04): 1057c478bd9Sstevel@tonic-gate# The law that claimed DST for Argentina was derogated by President Fernando 1066f8e8937SDan McDonald# de la Rúa on March 2, 2000, because it would make people spend more energy 1077c478bd9Sstevel@tonic-gate# in the winter time, rather than less. The change took effect on March 3. 1087c478bd9Sstevel@tonic-gate# 1097c478bd9Sstevel@tonic-gate# From Mariano Absatz (2001-06-06): 1107c478bd9Sstevel@tonic-gate# one of the major newspapers here in Argentina said that the 1999 1117c478bd9Sstevel@tonic-gate# Timezone Law (which never was effectively applied) will (would?) be 1127c478bd9Sstevel@tonic-gate# in effect.... The article is at 1137c478bd9Sstevel@tonic-gate# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 11456b82ca8SDan McDonald# ... The Law itself is "Ley No. 25155", sanctioned on 1999-08-25, enacted 1157c478bd9Sstevel@tonic-gate# 1999-09-17, and published 1999-09-21. The official publication is at: 1167c478bd9Sstevel@tonic-gate# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 1177c478bd9Sstevel@tonic-gate# Regretfully, you have to subscribe (and pay) for the on-line version.... 1187c478bd9Sstevel@tonic-gate# 1197c478bd9Sstevel@tonic-gate# (2001-06-12): 1207c478bd9Sstevel@tonic-gate# the timezone for Argentina will not change next Sunday. 1217c478bd9Sstevel@tonic-gate# Apparently it will do so on Sunday 24th.... 1227c478bd9Sstevel@tonic-gate# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 1237c478bd9Sstevel@tonic-gate# 1247c478bd9Sstevel@tonic-gate# (2001-06-25): 1257c478bd9Sstevel@tonic-gate# Last Friday (yes, the last working day before the date of the change), the 1267c478bd9Sstevel@tonic-gate# Senate annulled the 1999 law that introduced the changes later postponed. 1277c478bd9Sstevel@tonic-gate# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 1287c478bd9Sstevel@tonic-gate# It remains the vote of the Deputies..., but it will be the same.... 1297c478bd9Sstevel@tonic-gate# This kind of things had always been done this way in Argentina. 1307c478bd9Sstevel@tonic-gate# We are still -03:00 all year round in all of the country. 1317c478bd9Sstevel@tonic-gate# 132106fe065Srobbin# From Steffen Thorsen (2007-12-21): 133106fe065Srobbin# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 134106fe065Srobbin# all of the country (all Zone-entries) are affected. News reports like 135106fe065Srobbin# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 136106fe065Srobbin# that Argentina will use DST next year as well, from October to 137106fe065Srobbin# March, although exact rules are not given. 138106fe065Srobbin# 1396f8e8937SDan McDonald# From Jesper Nørgaard Welen (2007-12-26) 140106fe065Srobbin# The last hurdle of Argentina DST is over, the proposal was approved in 1416f8e8937SDan McDonald# the lower chamber too (Diputados) with a vote 192 for and 2 against. 142106fe065Srobbin# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 143106fe065Srobbin# the original scanned proposal, where the dates and the zero hours are 144106fe065Srobbin# clear and unambiguous...This is the article about final approval: 145106fe065Srobbin# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 146106fe065Srobbin# 147106fe065Srobbin# From Paul Eggert (2007-12-22): 148106fe065Srobbin# For dates after mid-2008, the following rules are my guesses and 149106fe065Srobbin# are quite possibly wrong, but are more likely than no DST at all. 150376a7c81SRobbin Kawabata 151376a7c81SRobbin Kawabata# From Alexander Krivenyshev (2008-09-05): 152376a7c81SRobbin Kawabata# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 153376a7c81SRobbin Kawabata# Argentina will start DST on Sunday October 19, 2008. 154376a7c81SRobbin Kawabata# 155376a7c81SRobbin Kawabata# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 156376a7c81SRobbin Kawabata# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 157376a7c81SRobbin Kawabata 15856b82ca8SDan McDonald# From Juan Manuel Docile in https://bugs.gentoo.org/240339 (2008-10-07) 15956b82ca8SDan McDonald# via Rodrigo Severo: 16056b82ca8SDan McDonald# Argentinian law No. 25.155 is no longer valid. 161376a7c81SRobbin Kawabata# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 16256b82ca8SDan McDonald# The new one is law No. 26.350 163376a7c81SRobbin Kawabata# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 164376a7c81SRobbin Kawabata# So there is no summer time in Argentina for now. 165376a7c81SRobbin Kawabata 1668e4c1c45SRobbin Kawabata# From Mariano Absatz (2008-10-20): 1676f8e8937SDan McDonald# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST 1686f8e8937SDan McDonald# in Argentina from 2008-10-19 until 2009-03-15. 1698e4c1c45SRobbin Kawabata# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 1708e4c1c45SRobbin Kawabata# 1716f8e8937SDan McDonald 1726f8e8937SDan McDonald# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 1736f8e8937SDan McDonald# 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La 1746f8e8937SDan McDonald# Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego 1758e4c1c45SRobbin Kawabata# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 1768e4c1c45SRobbin Kawabata# 1776f8e8937SDan McDonald# Press release 235 dated Saturday October 18th, from the Government of the 1786f8e8937SDan McDonald# Province of Jujuy saying it will not apply DST either (even when it was not 1796f8e8937SDan McDonald# included in Decree 1705/2008). 1808e4c1c45SRobbin Kawabata# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 1818e4c1c45SRobbin Kawabata 1823254abe6SNobutomo Nakano# From fullinet (2009-10-18): 1833254abe6SNobutomo Nakano# As announced in 1843254abe6SNobutomo Nakano# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 1856f8e8937SDan McDonald# (an official .gob.ar) under title: "Sin Cambio de Hora" 1866f8e8937SDan McDonald# (English: "No hour change"). 1873254abe6SNobutomo Nakano# 1886f8e8937SDan McDonald# "Por el momento, el Gobierno Nacional resolvió no modificar la hora 1896f8e8937SDan McDonald# oficial, decisión que estaba en estudio para su implementación el 1906f8e8937SDan McDonald# domingo 18 de octubre. Desde el Ministerio de Planificación se anunció 1916f8e8937SDan McDonald# que la Argentina hoy, en estas condiciones meteorológicas, no necesita 1926f8e8937SDan McDonald# la modificación del huso horario, ya que 2009 nos encuentra con 1936f8e8937SDan McDonald# crecimiento en la producción y distribución energética." 1943254abe6SNobutomo Nakano 1953508b934SYuri PankovRule Arg 2007 only - Dec 30 0:00 1:00 - 1963254abe6SNobutomo NakanoRule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 1973508b934SYuri PankovRule Arg 2008 only - Oct Sun>=15 0:00 1:00 - 198a43ba736SRobert Mustacchi 1997c478bd9Sstevel@tonic-gate# From Mariano Absatz (2004-05-21): 2007c478bd9Sstevel@tonic-gate# Today it was officially published that the Province of Mendoza is changing 2017c478bd9Sstevel@tonic-gate# its timezone this winter... starting tomorrow night.... 2027c478bd9Sstevel@tonic-gate# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 2037c478bd9Sstevel@tonic-gate# From Paul Eggert (2004-05-24): 2047c478bd9Sstevel@tonic-gate# It's Law No. 7,210. This change is due to a public power emergency, so for 2057c478bd9Sstevel@tonic-gate# now we'll assume it's for this year only. 2067c478bd9Sstevel@tonic-gate# 2073508b934SYuri Pankov# From Paul Eggert (2018-01-31): 2086f8e8937SDan McDonald# Hora de verano para la República Argentina 2096f8e8937SDan McDonald# http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html 2106f8e8937SDan McDonald# says that standard time in Argentina from 1894-10-31 2117c478bd9Sstevel@tonic-gate# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 2123508b934SYuri Pankov# over Shanks & Pottenger. It is upward compatible with Milne, who 2133508b934SYuri Pankov# says Córdoba time was -4:16:48.2. 2143508b934SYuri Pankov 2157c478bd9Sstevel@tonic-gate# 2167c478bd9Sstevel@tonic-gate# From Mariano Absatz (2004-06-05): 2177c478bd9Sstevel@tonic-gate# These media articles from a major newspaper mostly cover the current state: 2187c478bd9Sstevel@tonic-gate# http://www.lanacion.com.ar/04/05/27/de_604825.asp 2197c478bd9Sstevel@tonic-gate# http://www.lanacion.com.ar/04/05/28/de_605203.asp 2207c478bd9Sstevel@tonic-gate# 2217c478bd9Sstevel@tonic-gate# The following eight (8) provinces pulled clocks back to UTC-04:00 at 2227c478bd9Sstevel@tonic-gate# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 2237c478bd9Sstevel@tonic-gate# Apparently, all nine provinces would go back to UTC-03:00 at the same 2247c478bd9Sstevel@tonic-gate# time in October 17th. 2257c478bd9Sstevel@tonic-gate# 2267c478bd9Sstevel@tonic-gate# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 2276f8e8937SDan McDonald# Tierra del Fuego, Tucumán. 2287c478bd9Sstevel@tonic-gate# 2297c478bd9Sstevel@tonic-gate# From Mariano Absatz (2004-06-14): 2306f8e8937SDan McDonald# ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00 2317c478bd9Sstevel@tonic-gate# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 2327c478bd9Sstevel@tonic-gate# annoyance with the change is much higher than the power savings obtained.... 2337c478bd9Sstevel@tonic-gate# 2347c478bd9Sstevel@tonic-gate# From Gwillim Law (2004-06-14): 2357c478bd9Sstevel@tonic-gate# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 2367c478bd9Sstevel@tonic-gate# "The time change in Tierra del Fuego was a conflicted decision from 2377c478bd9Sstevel@tonic-gate# the start. The government had decreed that the measure would take 2387c478bd9Sstevel@tonic-gate# effect on June 1, but a normative error forced the new time to begin 2397c478bd9Sstevel@tonic-gate# three days earlier, from a Saturday to a Sunday.... 2407c478bd9Sstevel@tonic-gate# Our understanding was that the change was originally scheduled to take place 2417c478bd9Sstevel@tonic-gate# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 2427c478bd9Sstevel@tonic-gate# provinces). Sunday was May 30, only two days earlier. So the article 2437c478bd9Sstevel@tonic-gate# contains a contradiction. I would give more credence to the Saturday/Sunday 2447c478bd9Sstevel@tonic-gate# date than the "three days earlier" phrase, and conclude that Tierra del 2457c478bd9Sstevel@tonic-gate# Fuego set its clocks back at 2004-05-30 00:00. 2467c478bd9Sstevel@tonic-gate# 2477c478bd9Sstevel@tonic-gate# From Steffen Thorsen (2004-10-05): 2487c478bd9Sstevel@tonic-gate# The previous law 7210 which changed the province of Mendoza's time zone 2497c478bd9Sstevel@tonic-gate# back in May have been modified slightly in a new law 7277, which set the 2507c478bd9Sstevel@tonic-gate# new end date to 2004-09-26 (original date was 2004-10-17). 2517c478bd9Sstevel@tonic-gate# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 2527c478bd9Sstevel@tonic-gate# 2537c478bd9Sstevel@tonic-gate# From Mariano Absatz (2004-10-05): 2547c478bd9Sstevel@tonic-gate# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 2557c478bd9Sstevel@tonic-gate# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 2567c478bd9Sstevel@tonic-gate# at midnight between Saturday, July 24th and Sunday, July 25th.... 2577c478bd9Sstevel@tonic-gate# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 2587c478bd9Sstevel@tonic-gate# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 2597c478bd9Sstevel@tonic-gate# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 2607c478bd9Sstevel@tonic-gate 2618593320bSrobbin# From Alex Krivenyshev (2008-01-17): 2628593320bSrobbin# Here are articles that Argentina Province San Luis is planning to end DST 2638593320bSrobbin# as earlier as upcoming Monday January 21, 2008 or February 2008: 2648593320bSrobbin# 2656f8e8937SDan McDonald# Provincia argentina retrasa reloj y marca diferencia con resto del país 2668593320bSrobbin# (Argentine Province delayed clock and mark difference with the rest of the 2678593320bSrobbin# country) 2688593320bSrobbin# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 2698593320bSrobbin# 2708593320bSrobbin# Es inminente que en San Luis atrasen una hora los relojes 2718593320bSrobbin# (It is imminent in San Luis clocks one hour delay) 272b654b02dSYuri Pankov# https://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html 273b654b02dSYuri Pankov# http://www.worldtimezone.com/dst_news/dst_news_argentina02.html 2748593320bSrobbin 2756f8e8937SDan McDonald# From Jesper Nørgaard Welen (2008-01-18): 2768593320bSrobbin# The page of the San Luis provincial government 2778593320bSrobbin# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 2788593320bSrobbin# confirms what Alex Krivenyshev has earlier sent to the tz 2798593320bSrobbin# emailing list about that San Luis plans to return to standard 2808593320bSrobbin# time much earlier than the rest of the country. It also 281a43ba736SRobert Mustacchi# confirms that upon request the provinces San Juan and Mendoza 282a43ba736SRobert Mustacchi# refused to follow San Luis in this change. 283a43ba736SRobert Mustacchi# 2846f8e8937SDan McDonald# The change is supposed to take place Monday the 21st at 0:00 2858593320bSrobbin# hours. As far as I understand it if this goes ahead, we need 2868593320bSrobbin# a new timezone for San Luis (although there are also documented 2878593320bSrobbin# independent changes in the southamerica file of San Luis in 2888593320bSrobbin# 1990 and 1991 which has not been confirmed). 2898593320bSrobbin 2906f8e8937SDan McDonald# From Jesper Nørgaard Welen (2008-01-25): 2918593320bSrobbin# Unfortunately the below page has become defunct, about the San Luis 2928593320bSrobbin# time change. Perhaps because it now is part of a group of pages "Most 2938593320bSrobbin# important pages of 2008." 2948593320bSrobbin# 2958593320bSrobbin# You can use 2968593320bSrobbin# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 2978593320bSrobbin# instead it seems. Or use "Buscador" from the main page of the San Luis 2988593320bSrobbin# government, and fill in "huso" and click OK, and you will get 3 pages 2998593320bSrobbin# from which the first one is identical to the above. 3008593320bSrobbin 3018593320bSrobbin# From Mariano Absatz (2008-01-28): 3028593320bSrobbin# I can confirm that the Province of San Luis (and so far only that 3038593320bSrobbin# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 3048593320bSrobbin# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 3058593320bSrobbin# 1 hour), and they intend to keep UTC-3 as their timezone all year round 3068593320bSrobbin# (that is, unless they change their mind any minute now). 3078593320bSrobbin# 3088593320bSrobbin# So we'll have to add yet another city to 'southamerica' (I think San 3098593320bSrobbin# Luis city is the mos populated city in the Province, so it'd be 3108593320bSrobbin# America/Argentina/San_Luis... of course I can't remember if San Luis's 3118593320bSrobbin# history of particular changes goes along with Mendoza or San Juan :-( 3128593320bSrobbin# (I only remember not being able to collect hard facts about San Luis 3138593320bSrobbin# back in 2004, when these provinces changed to UTC-4 for a few days, I 3148593320bSrobbin# mailed them personally and never got an answer). 3158593320bSrobbin 3166f8e8937SDan McDonald# From Paul Eggert (2014-08-12): 3176f8e8937SDan McDonald# Unless otherwise specified, data entries are from Shanks & Pottenger through 3186f8e8937SDan McDonald# 1992, from the IATA otherwise. As noted below, Shanks & Pottenger say that 31956725381Srobbin# America/Cordoba split into 6 subregions during 1991/1992, one of which 32056725381Srobbin# was America/San_Luis, but we haven't verified this yet so for now we'll 32156725381Srobbin# keep America/Cordoba a single region rather than splitting it into the 32256725381Srobbin# other 5 subregions. 32356725381Srobbin 32410355008SNobutomo Nakano# From Mariano Absatz (2009-03-13): 32510355008SNobutomo Nakano# Yesterday (with our usual 2-day notice) the Province of San Luis 32610355008SNobutomo Nakano# decided that next Sunday instead of "staying" @utc-03:00 they will go 32710355008SNobutomo Nakano# to utc-04:00 until the second Saturday in October... 32810355008SNobutomo Nakano# 32910355008SNobutomo Nakano# The press release is at 33010355008SNobutomo Nakano# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 3316f8e8937SDan McDonald# (I couldn't find the decree, but www.sanluis.gov.ar 3326f8e8937SDan McDonald# is the official page for the Province Government.) 33310355008SNobutomo Nakano# 334a43ba736SRobert Mustacchi# There's also a note in only one of the major national papers ... 33510355008SNobutomo Nakano# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 336a43ba736SRobert Mustacchi# 337a43ba736SRobert Mustacchi# The press release says [quick and dirty translation]: 338a43ba736SRobert Mustacchi# ... announced that next Sunday, at 00:00, Puntanos (the San Luis 33910355008SNobutomo Nakano# inhabitants) will have to turn back one hour their clocks 34010355008SNobutomo Nakano# 34110355008SNobutomo Nakano# Since then, San Luis will establish its own Province timezone. Thus, 34210355008SNobutomo Nakano# during 2009, this timezone change will run from 00:00 the third Sunday 34310355008SNobutomo Nakano# in March until 24:00 of the second Saturday in October. 34410355008SNobutomo Nakano 3453254abe6SNobutomo Nakano# From Mariano Absatz (2009-10-16): 3463254abe6SNobutomo Nakano# ...the Province of San Luis is a case in itself. 3473254abe6SNobutomo Nakano# 3483254abe6SNobutomo Nakano# The Law at 3493254abe6SNobutomo Nakano# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 3503254abe6SNobutomo Nakano# is ambiguous because establishes a calendar from the 2nd Sunday in 3513254abe6SNobutomo Nakano# October at 0:00 thru the 2nd Saturday in March at 24:00 and the 3523254abe6SNobutomo Nakano# complement of that starting on the 2nd Sunday of March at 0:00 and 3533254abe6SNobutomo Nakano# ending on the 2nd Saturday of March at 24:00. 3543254abe6SNobutomo Nakano# 3553254abe6SNobutomo Nakano# This clearly breaks every time the 1st of March or October is a Sunday. 3563254abe6SNobutomo Nakano# 3573254abe6SNobutomo Nakano# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 3583254abe6SNobutomo Nakano# Sunday of October and March. 3593254abe6SNobutomo Nakano# 3603254abe6SNobutomo Nakano# The problem is that the changes in the rest of the Provinces that did 3613254abe6SNobutomo Nakano# change in 2007/2008, were made according to the Federal Law and Decrees 3623254abe6SNobutomo Nakano# that did so on the 3rd Sunday of October and March. 3637c478bd9Sstevel@tonic-gate# 3643254abe6SNobutomo Nakano# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 3653254abe6SNobutomo Nakano# (October 11th) at 0:00. 3663254abe6SNobutomo Nakano# 3673254abe6SNobutomo Nakano# So I guess a new set of rules, besides "Arg", must be made and the last 3683254abe6SNobutomo Nakano# America/Argentina/San_Luis entries should change to use these... 3693254abe6SNobutomo Nakano# ... 3703254abe6SNobutomo Nakano 3710ba103b8SNobutomo Nakano# From Alexander Krivenyshev (2010-04-09): 3726f8e8937SDan McDonald# According to news reports from El Diario de la República Province San 3730ba103b8SNobutomo Nakano# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 3746f8e8937SDan McDonald# after April 11, 2010 - will continue to have same time as rest of 3750ba103b8SNobutomo Nakano# Argentina (UTC-3) (no DST). 3760ba103b8SNobutomo Nakano# 3776f8e8937SDan McDonald# Confirmaron la prórroga del huso horario de verano (Spanish) 3780ba103b8SNobutomo Nakano# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 3790ba103b8SNobutomo Nakano# or (some English translation): 3800ba103b8SNobutomo Nakano# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 3810ba103b8SNobutomo Nakano 3820ba103b8SNobutomo Nakano# From Mariano Absatz (2010-04-12): 3830ba103b8SNobutomo Nakano# yes...I can confirm this...and given that San Luis keeps calling 3840ba103b8SNobutomo Nakano# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 3850ba103b8SNobutomo Nakano# rules...San Luis is still using "Western ARgentina Time" and it got 3860ba103b8SNobutomo Nakano# stuck on Summer daylight savings time even though the summer is over. 3870ba103b8SNobutomo Nakano 3883508b934SYuri Pankov# From Paul Eggert (2018-01-23): 389c2d5ab87SDan McDonald# Perhaps San Luis operates on the legal fiction that it is at -04 3903508b934SYuri Pankov# with perpetual daylight saving time, but ordinary usage typically seems to 391c2d5ab87SDan McDonald# just say it's at -03; see, for example, 392b654b02dSYuri Pankov# https://es.wikipedia.org/wiki/Hora_oficial_argentina 393a43ba736SRobert Mustacchi# We've documented similar situations as being plain changes to 394a43ba736SRobert Mustacchi# standard time, so let's do that here too. This does not change UTC 395a43ba736SRobert Mustacchi# offsets, only tm_isdst and the time zone abbreviations. One minor 396a43ba736SRobert Mustacchi# plus is that this silences a zic complaint that there's no POSIX TZ 39705e627dcSAndy Fiddaman# setting for timestamps past 2038. 398a43ba736SRobert Mustacchi 399374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 4007c478bd9Sstevel@tonic-gate# 4017c478bd9Sstevel@tonic-gate# Buenos Aires (BA), Capital Federal (CF), 4026f8e8937SDan McDonaldZone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 4036f8e8937SDan McDonald -4:16:48 - CMT 1920 May # Córdoba Mean Time 404dafc4501SDan McDonald -4:00 - -04 1930 Dec 405dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 406dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 407dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 408dafc4501SDan McDonald -3:00 Arg -03/-02 4097c478bd9Sstevel@tonic-gate# 4106f8e8937SDan McDonald# Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), 4118e4c1c45SRobbin Kawabata# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 4127c478bd9Sstevel@tonic-gate# 4132f9aa4a7Srobbin# Shanks & Pottenger also make the following claims, which we haven't verified: 4147c478bd9Sstevel@tonic-gate# - Formosa switched to -3:00 on 1991-01-07. 4157c478bd9Sstevel@tonic-gate# - Misiones switched to -3:00 on 1990-12-29. 4167c478bd9Sstevel@tonic-gate# - Chaco switched to -3:00 on 1991-01-04. 4177c478bd9Sstevel@tonic-gate# - Santiago del Estero switched to -4:00 on 1991-04-01, 4187c478bd9Sstevel@tonic-gate# then to -3:00 on 1991-04-26. 4197c478bd9Sstevel@tonic-gate# 4207c478bd9Sstevel@tonic-gateZone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 4217c478bd9Sstevel@tonic-gate -4:16:48 - CMT 1920 May 422dafc4501SDan McDonald -4:00 - -04 1930 Dec 423dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 424dafc4501SDan McDonald -3:00 Arg -03/-02 1991 Mar 3 425dafc4501SDan McDonald -4:00 - -04 1991 Oct 20 426dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 427dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 428dafc4501SDan McDonald -3:00 Arg -03/-02 4297c478bd9Sstevel@tonic-gate# 4306f8e8937SDan McDonald# Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) 4318e4c1c45SRobbin KawabataZone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 4328e4c1c45SRobbin Kawabata -4:16:48 - CMT 1920 May 433dafc4501SDan McDonald -4:00 - -04 1930 Dec 434dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 435dafc4501SDan McDonald -3:00 Arg -03/-02 1991 Mar 3 436dafc4501SDan McDonald -4:00 - -04 1991 Oct 20 437dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 438dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 439dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 440dafc4501SDan McDonald -3:00 - -03 4418e4c1c45SRobbin Kawabata# 4426f8e8937SDan McDonald# Tucumán (TM) 4437c478bd9Sstevel@tonic-gateZone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 4447c478bd9Sstevel@tonic-gate -4:16:48 - CMT 1920 May 445dafc4501SDan McDonald -4:00 - -04 1930 Dec 446dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 447dafc4501SDan McDonald -3:00 Arg -03/-02 1991 Mar 3 448dafc4501SDan McDonald -4:00 - -04 1991 Oct 20 449dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 450dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 451dafc4501SDan McDonald -3:00 - -03 2004 Jun 1 452dafc4501SDan McDonald -4:00 - -04 2004 Jun 13 453dafc4501SDan McDonald -3:00 Arg -03/-02 4547c478bd9Sstevel@tonic-gate# 4557c478bd9Sstevel@tonic-gate# La Rioja (LR) 4567c478bd9Sstevel@tonic-gateZone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 4577c478bd9Sstevel@tonic-gate -4:16:48 - CMT 1920 May 458dafc4501SDan McDonald -4:00 - -04 1930 Dec 459dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 460dafc4501SDan McDonald -3:00 Arg -03/-02 1991 Mar 1 461dafc4501SDan McDonald -4:00 - -04 1991 May 7 462dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 463dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 464dafc4501SDan McDonald -3:00 - -03 2004 Jun 1 465dafc4501SDan McDonald -4:00 - -04 2004 Jun 20 466dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 467dafc4501SDan McDonald -3:00 - -03 4687c478bd9Sstevel@tonic-gate# 4697c478bd9Sstevel@tonic-gate# San Juan (SJ) 4707c478bd9Sstevel@tonic-gateZone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 4717c478bd9Sstevel@tonic-gate -4:16:48 - CMT 1920 May 472dafc4501SDan McDonald -4:00 - -04 1930 Dec 473dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 474dafc4501SDan McDonald -3:00 Arg -03/-02 1991 Mar 1 475dafc4501SDan McDonald -4:00 - -04 1991 May 7 476dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 477dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 478dafc4501SDan McDonald -3:00 - -03 2004 May 31 479dafc4501SDan McDonald -4:00 - -04 2004 Jul 25 480dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 481dafc4501SDan McDonald -3:00 - -03 4827c478bd9Sstevel@tonic-gate# 4837c478bd9Sstevel@tonic-gate# Jujuy (JY) 4847c478bd9Sstevel@tonic-gateZone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 4857c478bd9Sstevel@tonic-gate -4:16:48 - CMT 1920 May 486dafc4501SDan McDonald -4:00 - -04 1930 Dec 487dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 488dafc4501SDan McDonald -3:00 Arg -03/-02 1990 Mar 4 489dafc4501SDan McDonald -4:00 - -04 1990 Oct 28 490dafc4501SDan McDonald -4:00 1:00 -03 1991 Mar 17 491dafc4501SDan McDonald -4:00 - -04 1991 Oct 6 492dafc4501SDan McDonald -3:00 1:00 -02 1992 493dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 494dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 495dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 496dafc4501SDan McDonald -3:00 - -03 4977c478bd9Sstevel@tonic-gate# 49880868c53Srobbin# Catamarca (CT), Chubut (CH) 4997c478bd9Sstevel@tonic-gateZone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 5007c478bd9Sstevel@tonic-gate -4:16:48 - CMT 1920 May 501dafc4501SDan McDonald -4:00 - -04 1930 Dec 502dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 503dafc4501SDan McDonald -3:00 Arg -03/-02 1991 Mar 3 504dafc4501SDan McDonald -4:00 - -04 1991 Oct 20 505dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 506dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 507dafc4501SDan McDonald -3:00 - -03 2004 Jun 1 508dafc4501SDan McDonald -4:00 - -04 2004 Jun 20 509dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 510dafc4501SDan McDonald -3:00 - -03 5117c478bd9Sstevel@tonic-gate# 5127c478bd9Sstevel@tonic-gate# Mendoza (MZ) 5137c478bd9Sstevel@tonic-gateZone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 5147c478bd9Sstevel@tonic-gate -4:16:48 - CMT 1920 May 515dafc4501SDan McDonald -4:00 - -04 1930 Dec 516dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 517dafc4501SDan McDonald -3:00 Arg -03/-02 1990 Mar 4 518dafc4501SDan McDonald -4:00 - -04 1990 Oct 15 519dafc4501SDan McDonald -4:00 1:00 -03 1991 Mar 1 520dafc4501SDan McDonald -4:00 - -04 1991 Oct 15 521dafc4501SDan McDonald -4:00 1:00 -03 1992 Mar 1 522dafc4501SDan McDonald -4:00 - -04 1992 Oct 18 523dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 524dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 525dafc4501SDan McDonald -3:00 - -03 2004 May 23 526dafc4501SDan McDonald -4:00 - -04 2004 Sep 26 527dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 528dafc4501SDan McDonald -3:00 - -03 5297c478bd9Sstevel@tonic-gate# 5308593320bSrobbin# San Luis (SL) 5313254abe6SNobutomo Nakano 5320ba103b8SNobutomo NakanoRule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 5333508b934SYuri PankovRule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 - 5343254abe6SNobutomo Nakano 5358593320bSrobbinZone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 5368593320bSrobbin -4:16:48 - CMT 1920 May 537dafc4501SDan McDonald -4:00 - -04 1930 Dec 538dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 539dafc4501SDan McDonald -3:00 Arg -03/-02 1990 540dafc4501SDan McDonald -3:00 1:00 -02 1990 Mar 14 541dafc4501SDan McDonald -4:00 - -04 1990 Oct 15 542dafc4501SDan McDonald -4:00 1:00 -03 1991 Mar 1 543dafc4501SDan McDonald -4:00 - -04 1991 Jun 1 544dafc4501SDan McDonald -3:00 - -03 1999 Oct 3 545dafc4501SDan McDonald -4:00 1:00 -03 2000 Mar 3 546dafc4501SDan McDonald -3:00 - -03 2004 May 31 547dafc4501SDan McDonald -4:00 - -04 2004 Jul 25 548dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Jan 21 549dafc4501SDan McDonald -4:00 SanLuis -04/-03 2009 Oct 11 550dafc4501SDan McDonald -3:00 - -03 5518593320bSrobbin# 5527c478bd9Sstevel@tonic-gate# Santa Cruz (SC) 5536f8e8937SDan McDonaldZone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 554dafc4501SDan McDonald -4:16:48 - CMT 1920 May 555dafc4501SDan McDonald -4:00 - -04 1930 Dec 556dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 557dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 558dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 559dafc4501SDan McDonald -3:00 - -03 2004 Jun 1 560dafc4501SDan McDonald -4:00 - -04 2004 Jun 20 561dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 562dafc4501SDan McDonald -3:00 - -03 5637c478bd9Sstevel@tonic-gate# 5646f8e8937SDan McDonald# Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) 5656f8e8937SDan McDonaldZone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 566dafc4501SDan McDonald -4:16:48 - CMT 1920 May 567dafc4501SDan McDonald -4:00 - -04 1930 Dec 568dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 569dafc4501SDan McDonald -3:00 Arg -03/-02 1999 Oct 3 570dafc4501SDan McDonald -4:00 Arg -04/-03 2000 Mar 3 571dafc4501SDan McDonald -3:00 - -03 2004 May 30 572dafc4501SDan McDonald -4:00 - -04 2004 Jun 20 573dafc4501SDan McDonald -3:00 Arg -03/-02 2008 Oct 18 574dafc4501SDan McDonald -3:00 - -03 5757c478bd9Sstevel@tonic-gate 5767c478bd9Sstevel@tonic-gate# Aruba 577*06965442SAndy Fiddaman# See America/Puerto_Rico. 5787c478bd9Sstevel@tonic-gate 5797c478bd9Sstevel@tonic-gate# Bolivia 580374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 5817c478bd9Sstevel@tonic-gateZone America/La_Paz -4:32:36 - LMT 1890 5827c478bd9Sstevel@tonic-gate -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 5834b8ee424SYuri Pankov -4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST 584dafc4501SDan McDonald -4:00 - -04 5857c478bd9Sstevel@tonic-gate 5867c478bd9Sstevel@tonic-gate# Brazil 5877c478bd9Sstevel@tonic-gate 58880868c53Srobbin# From Paul Eggert (1993-11-18): 5897c478bd9Sstevel@tonic-gate# The mayor of Rio recently attempted to change the time zone rules 5907c478bd9Sstevel@tonic-gate# just in his city, in order to leave more summer time for the tourist trade. 5917c478bd9Sstevel@tonic-gate# The rule change lasted only part of the day; 5927c478bd9Sstevel@tonic-gate# the federal government refused to follow the city's rules, and business 5937c478bd9Sstevel@tonic-gate# was in a chaos, so the mayor backed down that afternoon. 5947c478bd9Sstevel@tonic-gate 5957c478bd9Sstevel@tonic-gate# From IATA SSIM (1996-02): 5967c478bd9Sstevel@tonic-gate# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 5976f8e8937SDan McDonald# Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ), 5986f8e8937SDan McDonald# Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO), 5997c478bd9Sstevel@tonic-gate# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 6007c478bd9Sstevel@tonic-gate# [The last three states are new to this issue of the IATA SSIM.] 6017c478bd9Sstevel@tonic-gate 6027c478bd9Sstevel@tonic-gate# From Gwillim Law (1996-10-07): 6036f8e8937SDan McDonald# Geography, history (Tocantins was part of Goiás until 1989), and other 6047c478bd9Sstevel@tonic-gate# sources of time zone information lead me to believe that AL, SE, and TO were 6057c478bd9Sstevel@tonic-gate# always in BR1, and so the only change was whether or not they observed DST.... 6067c478bd9Sstevel@tonic-gate# The earliest issue of the SSIM I have is 2/91. Each issue from then until 6077c478bd9Sstevel@tonic-gate# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 6087c478bd9Sstevel@tonic-gate# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 6097c478bd9Sstevel@tonic-gate# (UTC-4).... The other two time zones given for Brazil are BR3, which is 6107c478bd9Sstevel@tonic-gate# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 6117c478bd9Sstevel@tonic-gate# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 6127c478bd9Sstevel@tonic-gate# become part of the state of Pernambuco). The boundary between BR1 and BR2 6137c478bd9Sstevel@tonic-gate# has never been clearly stated. They've simply been called East and West. 6147c478bd9Sstevel@tonic-gate# However, some conclusions can be drawn from another IATA manual: the Airline 6157c478bd9Sstevel@tonic-gate# Coding Directory, which lists close to 400 airports in Brazil. For each 6167c478bd9Sstevel@tonic-gate# airport it gives a time zone which is coded to the SSIM. From that 6176f8e8937SDan McDonald# information, I'm led to conclude that the states of Amapá (AP), Ceará (CE), 6186f8e8937SDan McDonald# Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do 6196f8e8937SDan McDonald# Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST. 6207c478bd9Sstevel@tonic-gate 6217c478bd9Sstevel@tonic-gate# From Marcos Tadeu (1998-09-27): 6226f8e8937SDan McDonald# Brazilian official page <http://pcdsh01.on.br/verao1.html> 6237c478bd9Sstevel@tonic-gate 6246f8e8937SDan McDonald# From Jesper Nørgaard (2000-11-03): 6257c478bd9Sstevel@tonic-gate# [For an official list of which regions in Brazil use which time zones, see:] 6267c478bd9Sstevel@tonic-gate# http://pcdsh01.on.br/Fusbr.htm 6277c478bd9Sstevel@tonic-gate# http://pcdsh01.on.br/Fusbrhv.htm 6287c478bd9Sstevel@tonic-gate 6297c478bd9Sstevel@tonic-gate# From Celso Doria via David Madeo (2002-10-09): 6307c478bd9Sstevel@tonic-gate# The reason for the delay this year has to do with elections in Brazil. 6317c478bd9Sstevel@tonic-gate# 6327c478bd9Sstevel@tonic-gate# Unlike in the United States, elections in Brazil are 100% computerized and 6337c478bd9Sstevel@tonic-gate# the results are known almost immediately. Yesterday, it was the first 6347c478bd9Sstevel@tonic-gate# round of the elections when 115 million Brazilians voted for President, 6357c478bd9Sstevel@tonic-gate# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 6367c478bd9Sstevel@tonic-gate# counting (or re-counting) votes anymore and we know there will be a second 6377c478bd9Sstevel@tonic-gate# round for the Presidency and also for some Governors. The 2nd round will 6387c478bd9Sstevel@tonic-gate# take place on October 27th. 6397c478bd9Sstevel@tonic-gate# 6407c478bd9Sstevel@tonic-gate# The reason why the DST will only begin November 3rd is that the thousands 6417c478bd9Sstevel@tonic-gate# of electoral machines used cannot have their time changed, and since the 6427c478bd9Sstevel@tonic-gate# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 6437c478bd9Sstevel@tonic-gate# the Government decided to postpone DST, instead of changing the Constitution 6447c478bd9Sstevel@tonic-gate# (maybe, for the next elections, it will be possible to change the clock)... 6457c478bd9Sstevel@tonic-gate 6467c478bd9Sstevel@tonic-gate# From Rodrigo Severo (2004-10-04): 6477c478bd9Sstevel@tonic-gate# It's just the biannual change made necessary by the much hyped, supposedly 6487c478bd9Sstevel@tonic-gate# modern Brazilian eletronic voting machines which, apparently, can't deal 6497c478bd9Sstevel@tonic-gate# with a time change between the first and the second rounds of the elections. 6507c478bd9Sstevel@tonic-gate 651538f0434Srobbin# From Steffen Thorsen (2007-09-20): 652538f0434Srobbin# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 653538f0434Srobbin# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 654538f0434Srobbin 65556725381Srobbin# From Paul Schulze (2008-06-24): 65656725381Srobbin# ...by law number 11.662 of April 24, 2008 (published in the "Diario 6576f8e8937SDan McDonald# Oficial da União"...) in Brazil there are changes in the timezones, 65856725381Srobbin# effective today (00:00am at June 24, 2008) as follows: 65956725381Srobbin# 6606f8e8937SDan McDonald# a) The timezone UTC+5 is extinguished, with all the Acre state and the 66156725381Srobbin# part of the Amazonas state that had this timezone now being put to the 66256725381Srobbin# timezone UTC+4 6636f8e8937SDan McDonald# b) The whole Pará state now is put at timezone UTC+3, instead of just 66456725381Srobbin# part of it, as was before. 66556725381Srobbin# 66656725381Srobbin# This change follows a proposal of senator Tiao Viana of Acre state, that 66756725381Srobbin# proposed it due to concerns about open television channels displaying 66856725381Srobbin# programs inappropriate to youths in the states that had the timezone 66956725381Srobbin# UTC+5 too early in the night. In the occasion, some more corrections 67056725381Srobbin# were proposed, trying to unify the timezones of any given state. This 67156725381Srobbin# change modifies timezone rules defined in decree 2.784 of 18 June, 67256725381Srobbin# 1913. 67356725381Srobbin 67456725381Srobbin# From Rodrigo Severo (2008-06-24): 67556725381Srobbin# Just correcting the URL: 676707182d7SNobutomo Nakano# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 67756725381Srobbin# 67856725381Srobbin# As a result of the above Decree I believe the America/Rio_Branco 67956725381Srobbin# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 6806f8e8937SDan McDonald# be created to represent the...west side of the Pará State. I 68156725381Srobbin# suggest this new timezone be called Santarem as the most 68256725381Srobbin# important/populated city in the affected area. 68356725381Srobbin# 68456725381Srobbin# This new timezone would be the same as the Rio_Branco timezone up to 68556725381Srobbin# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 68656725381Srobbin 68756725381Srobbin# From Alex Krivenyshev (2008-06-24): 68856725381Srobbin# This is a quick reference page for New and Old Brazil Time Zones map. 68956725381Srobbin# http://www.worldtimezone.com/brazil-time-new-old.php 69056725381Srobbin# 6916f8e8937SDan McDonald# - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05 6926f8e8937SDan McDonald# (state Acre and the part of the Amazonas will be UTC/GMT-04) - western 6936f8e8937SDan McDonald# part of Par state is moving to one timezone UTC-03 (from UTC-04). 69456725381Srobbin 6957c478bd9Sstevel@tonic-gate# From Paul Eggert (2002-10-10): 6967c478bd9Sstevel@tonic-gate# The official decrees referenced below are mostly taken from 6976f8e8937SDan McDonald# Decretos sobre o Horário de Verão no Brasil. 6986f8e8937SDan McDonald# http://pcdsh01.on.br/DecHV.html 6997c478bd9Sstevel@tonic-gate 700376a7c81SRobbin Kawabata# From Steffen Thorsen (2008-08-29): 701376a7c81SRobbin Kawabata# As announced by the government and many newspapers in Brazil late 702376a7c81SRobbin Kawabata# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 703376a7c81SRobbin Kawabata# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 704376a7c81SRobbin Kawabata# past years experience with the elections, there was a good chance that 705376a7c81SRobbin Kawabata# the start was postponed to November, but it did not happen this year. 706376a7c81SRobbin Kawabata# 707376a7c81SRobbin Kawabata# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 708376a7c81SRobbin Kawabata# 709376a7c81SRobbin Kawabata# An official page about it: 710376a7c81SRobbin Kawabata# http://www.mme.gov.br/site/news/detail.do?newsId=16722 711376a7c81SRobbin Kawabata# Note that this link does not always work directly, but must be accessed 712376a7c81SRobbin Kawabata# by going to 713376a7c81SRobbin Kawabata# http://www.mme.gov.br/first 714376a7c81SRobbin Kawabata# 715376a7c81SRobbin Kawabata# One example link that works directly: 716376a7c81SRobbin Kawabata# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 717376a7c81SRobbin Kawabata# (Portuguese) 718376a7c81SRobbin Kawabata# 719376a7c81SRobbin Kawabata# We have a written a short article about it as well: 720b654b02dSYuri Pankov# https://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 721abaa65c8SYuri Pankov# 722abaa65c8SYuri Pankov# From Alexander Krivenyshev (2011-10-04): 723abaa65c8SYuri Pankov# State Bahia will return to Daylight savings time this year after 8 years off. 724a43ba736SRobert Mustacchi# The announcement was made by Governor Jaques Wagner in an interview to a 725a43ba736SRobert Mustacchi# television station in Salvador. 726abaa65c8SYuri Pankov 727abaa65c8SYuri Pankov# In Portuguese: 728abaa65c8SYuri Pankov# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 729b654b02dSYuri Pankov# https://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 730abaa65c8SYuri Pankov 731abaa65c8SYuri Pankov# From Guilherme Bernardes Rodrigues (2011-10-07): 732abaa65c8SYuri Pankov# There is news in the media, however there is still no decree about it. 7336f8e8937SDan McDonald# I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the 734a43ba736SRobert Mustacchi# official agency about time in Brazil, and she confirmed that the old rule is 735abaa65c8SYuri Pankov# still in force. 736abaa65c8SYuri Pankov 737abaa65c8SYuri Pankov# From Guilherme Bernardes Rodrigues (2011-10-14) 738abaa65c8SYuri Pankov# It's official, the President signed a decree that includes Bahia in summer 739abaa65c8SYuri Pankov# time. 740abaa65c8SYuri Pankov# [ and in a second message (same day): ] 741abaa65c8SYuri Pankov# I found the decree. 742abaa65c8SYuri Pankov# 74356b82ca8SDan McDonald# DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011 744abaa65c8SYuri Pankov# Link : 745abaa65c8SYuri Pankov# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 746abaa65c8SYuri Pankov 747a43ba736SRobert Mustacchi# From Kelley Cook (2012-10-16): 748a43ba736SRobert Mustacchi# The governor of state of Bahia in Brazil announced on Thursday that 749a43ba736SRobert Mustacchi# due to public pressure, he is reversing the DST policy they implemented 750a43ba736SRobert Mustacchi# last year and will not be going to Summer Time on October 21st.... 751a43ba736SRobert Mustacchi# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia 752a43ba736SRobert Mustacchi 753a43ba736SRobert Mustacchi# From Rodrigo Severo (2012-10-16): 754a43ba736SRobert Mustacchi# Tocantins state will have DST. 755b654b02dSYuri Pankov# https://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html 756a43ba736SRobert Mustacchi 757a43ba736SRobert Mustacchi# From Steffen Thorsen (2013-09-20): 758a43ba736SRobert Mustacchi# Tocantins in Brazil is very likely not to observe DST from October.... 759a43ba736SRobert Mustacchi# http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto 760a43ba736SRobert Mustacchi# We will keep this article updated when this is confirmed: 761b654b02dSYuri Pankov# https://www.timeanddate.com/news/time/brazil-starts-dst-2013.html 762a43ba736SRobert Mustacchi 763a43ba736SRobert Mustacchi# From Steffen Thorsen (2013-10-17): 764b654b02dSYuri Pankov# https://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html 765a43ba736SRobert Mustacchi# Senator Jorge Viana announced that Acre will change time zone on November 10. 766a43ba736SRobert Mustacchi# He did not specify the time of the change, nor if western parts of Amazonas 767a43ba736SRobert Mustacchi# will change as well. 768a43ba736SRobert Mustacchi# 769a43ba736SRobert Mustacchi# From Paul Eggert (2013-10-17): 770a43ba736SRobert Mustacchi# For now, assume western Amazonas will change as well. 771376a7c81SRobbin Kawabata 772f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 7736f8e8937SDan McDonald# Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01) 7746f8e8937SDan McDonald# Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10) 7753508b934SYuri PankovRule Brazil 1931 only - Oct 3 11:00 1:00 - 7767c478bd9Sstevel@tonic-gateRule Brazil 1932 1933 - Apr 1 0:00 0 - 7773508b934SYuri PankovRule Brazil 1932 only - Oct 3 0:00 1:00 - 7786f8e8937SDan McDonald# Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10) 7797c478bd9Sstevel@tonic-gate# revoked DST. 7806f8e8937SDan McDonald# Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24) 7816f8e8937SDan McDonald# Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13) 7823508b934SYuri PankovRule Brazil 1949 1952 - Dec 1 0:00 1:00 - 7837c478bd9Sstevel@tonic-gateRule Brazil 1950 only - Apr 16 1:00 0 - 7847c478bd9Sstevel@tonic-gateRule Brazil 1951 1952 - Apr 1 0:00 0 - 7856f8e8937SDan McDonald# Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24) 7867c478bd9Sstevel@tonic-gateRule Brazil 1953 only - Mar 1 0:00 0 - 7876f8e8937SDan McDonald# Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30) 7887c478bd9Sstevel@tonic-gate# revoked DST. 7896f8e8937SDan McDonald# Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18) 7907c478bd9Sstevel@tonic-gate# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 7917c478bd9Sstevel@tonic-gate# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 7926f8e8937SDan McDonald# Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03) 7937c478bd9Sstevel@tonic-gate# extended the above decree to all of the national territory on 12-09. 7943508b934SYuri PankovRule Brazil 1963 only - Dec 9 0:00 1:00 - 7956f8e8937SDan McDonald# Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25) 7967c478bd9Sstevel@tonic-gate# extended summer time by one day to 1964-03-01 00:00 (start of school). 7977c478bd9Sstevel@tonic-gateRule Brazil 1964 only - Mar 1 0:00 0 - 7986f8e8937SDan McDonald# Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27) 7993508b934SYuri PankovRule Brazil 1965 only - Jan 31 0:00 1:00 - 8007c478bd9Sstevel@tonic-gateRule Brazil 1965 only - Mar 31 0:00 0 - 8016f8e8937SDan McDonald# Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22) 8023508b934SYuri PankovRule Brazil 1965 only - Dec 1 0:00 1:00 - 8036f8e8937SDan McDonald# Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18) 8047c478bd9Sstevel@tonic-gateRule Brazil 1966 1968 - Mar 1 0:00 0 - 8053508b934SYuri PankovRule Brazil 1966 1967 - Nov 1 0:00 1:00 - 8066f8e8937SDan McDonald# Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15) 8077c478bd9Sstevel@tonic-gate# revoked DST. 8086f8e8937SDan McDonald# Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27) 8093508b934SYuri PankovRule Brazil 1985 only - Nov 2 0:00 1:00 - 8107c478bd9Sstevel@tonic-gate# Decree 92,310 (1986-01-21) 8117c478bd9Sstevel@tonic-gate# Decree 92,463 (1986-03-13) 8127c478bd9Sstevel@tonic-gateRule Brazil 1986 only - Mar 15 0:00 0 - 8137c478bd9Sstevel@tonic-gate# Decree 93,316 (1986-10-01) 8143508b934SYuri PankovRule Brazil 1986 only - Oct 25 0:00 1:00 - 8157c478bd9Sstevel@tonic-gateRule Brazil 1987 only - Feb 14 0:00 0 - 8166f8e8937SDan McDonald# Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22) 8173508b934SYuri PankovRule Brazil 1987 only - Oct 25 0:00 1:00 - 8187c478bd9Sstevel@tonic-gateRule Brazil 1988 only - Feb 7 0:00 0 - 8196f8e8937SDan McDonald# Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12) 8207c478bd9Sstevel@tonic-gate# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 8213508b934SYuri PankovRule Brazil 1988 only - Oct 16 0:00 1:00 - 8227c478bd9Sstevel@tonic-gateRule Brazil 1989 only - Jan 29 0:00 0 - 8236f8e8937SDan McDonald# Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21) 8247c478bd9Sstevel@tonic-gate# with the same exceptions 8253508b934SYuri PankovRule Brazil 1989 only - Oct 15 0:00 1:00 - 8267c478bd9Sstevel@tonic-gateRule Brazil 1990 only - Feb 11 0:00 0 - 8276f8e8937SDan McDonald# Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17) 8287c478bd9Sstevel@tonic-gate# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 8297c478bd9Sstevel@tonic-gate# Decree 99,629 (1990-10-19) adds BA, MT. 8303508b934SYuri PankovRule Brazil 1990 only - Oct 21 0:00 1:00 - 8317c478bd9Sstevel@tonic-gateRule Brazil 1991 only - Feb 17 0:00 0 - 8326f8e8937SDan McDonald# Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25) 8337c478bd9Sstevel@tonic-gate# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 8343508b934SYuri PankovRule Brazil 1991 only - Oct 20 0:00 1:00 - 8357c478bd9Sstevel@tonic-gateRule Brazil 1992 only - Feb 9 0:00 0 - 8366f8e8937SDan McDonald# Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16) 8377c478bd9Sstevel@tonic-gate# adopted by same states. 8383508b934SYuri PankovRule Brazil 1992 only - Oct 25 0:00 1:00 - 8397c478bd9Sstevel@tonic-gateRule Brazil 1993 only - Jan 31 0:00 0 - 8406f8e8937SDan McDonald# Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28) 8417c478bd9Sstevel@tonic-gate# adopted by same states, plus AM. 8426f8e8937SDan McDonald# Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22; 8437c478bd9Sstevel@tonic-gate# web page corrected 2004-01-07) adopted by same states, minus AM. 8446f8e8937SDan McDonald# Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14) 8457c478bd9Sstevel@tonic-gate# adopted by same states, plus MT and TO. 8466f8e8937SDan McDonald# Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13) 8477c478bd9Sstevel@tonic-gate# adds AL, SE. 8483508b934SYuri PankovRule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 - 8497c478bd9Sstevel@tonic-gateRule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 8507c478bd9Sstevel@tonic-gateRule Brazil 1996 only - Feb 11 0:00 0 - 8516f8e8937SDan McDonald# Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04) 8527c478bd9Sstevel@tonic-gate# adopted by same states, minus AL, SE. 8533508b934SYuri PankovRule Brazil 1996 only - Oct 6 0:00 1:00 - 8547c478bd9Sstevel@tonic-gateRule Brazil 1997 only - Feb 16 0:00 0 - 85580868c53Srobbin# From Daniel C. Sobral (1998-02-12): 8567c478bd9Sstevel@tonic-gate# In 1997, the DS began on October 6. The stated reason was that 8577c478bd9Sstevel@tonic-gate# because international television networks ignored Brazil's policy on DS, 8587c478bd9Sstevel@tonic-gate# they bought the wrong times on satellite for coverage of Pope's visit. 8597c478bd9Sstevel@tonic-gate# This year, the ending date of DS was postponed to March 1 8607c478bd9Sstevel@tonic-gate# to help dealing with the shortages of electric power. 8617c478bd9Sstevel@tonic-gate# 8627c478bd9Sstevel@tonic-gate# Decree 2,317 (1997-09-04), adopted by same states. 8633508b934SYuri PankovRule Brazil 1997 only - Oct 6 0:00 1:00 - 8646f8e8937SDan McDonald# Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG> 8657c478bd9Sstevel@tonic-gate# (1998-02-10) 8667c478bd9Sstevel@tonic-gateRule Brazil 1998 only - Mar 1 0:00 0 - 8676f8e8937SDan McDonald# Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11) 8687c478bd9Sstevel@tonic-gate# adopted by the same states as before. 8693508b934SYuri PankovRule Brazil 1998 only - Oct 11 0:00 1:00 - 8707c478bd9Sstevel@tonic-gateRule Brazil 1999 only - Feb 21 0:00 0 - 8716f8e8937SDan McDonald# Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif> 8727c478bd9Sstevel@tonic-gate# (1999-08-23) adopted by same states. 8736f8e8937SDan McDonald# Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30) 8747c478bd9Sstevel@tonic-gate# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 8753508b934SYuri PankovRule Brazil 1999 only - Oct 3 0:00 1:00 - 8767c478bd9Sstevel@tonic-gateRule Brazil 2000 only - Feb 27 0:00 0 - 8776f8e8937SDan McDonald# Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06) 8787c478bd9Sstevel@tonic-gate# adopted by the same states as before. 8796f8e8937SDan McDonald# Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13) 8807c478bd9Sstevel@tonic-gate# repeals DST in PE and RR, effective 2000-10-15 00:00. 8816f8e8937SDan McDonald# Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17) 8827c478bd9Sstevel@tonic-gate# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 8836f8e8937SDan McDonald# Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif> 8847c478bd9Sstevel@tonic-gate# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 8853508b934SYuri PankovRule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 - 8862f9aa4a7SrobbinRule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 8877c478bd9Sstevel@tonic-gate# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 8886f8e8937SDan McDonald# 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm> 8893508b934SYuri PankovRule Brazil 2002 only - Nov 3 0:00 1:00 - 8907c478bd9Sstevel@tonic-gate# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 8916f8e8937SDan McDonald# 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm> 8923508b934SYuri PankovRule Brazil 2003 only - Oct 19 0:00 1:00 - 8937c478bd9Sstevel@tonic-gate# Decree 5,223 (2004-10-01) reestablishes DST in MT. 8946f8e8937SDan McDonald# 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm> 8953508b934SYuri PankovRule Brazil 2004 only - Nov 2 0:00 1:00 - 8966f8e8937SDan McDonald# Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19), 89780868c53Srobbin# adopted by the same states as before. 8983508b934SYuri PankovRule Brazil 2005 only - Oct 16 0:00 1:00 - 8996f8e8937SDan McDonald# Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03), 900538f0434Srobbin# adopted by the same states as before. 9013508b934SYuri PankovRule Brazil 2006 only - Nov 5 0:00 1:00 - 902538f0434SrobbinRule Brazil 2007 only - Feb 25 0:00 0 - 9036f8e8937SDan McDonald# Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26), 90456725381Srobbin# adopted by the same states as before. 9053508b934SYuri PankovRule Brazil 2007 only - Oct Sun>=8 0:00 1:00 - 906376a7c81SRobbin Kawabata# From Frederico A. C. Neves (2008-09-10): 907a43ba736SRobert Mustacchi# According to this decree 908376a7c81SRobbin Kawabata# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 909376a7c81SRobbin Kawabata# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 910376a7c81SRobbin Kawabata# 3rd Feb Sunday. There is an exception on the return date when this is 911376a7c81SRobbin Kawabata# the Carnival Sunday then the return date will be the next Sunday... 9123508b934SYuri PankovRule Brazil 2008 2017 - Oct Sun>=15 0:00 1:00 - 913376a7c81SRobbin KawabataRule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 9144b8ee424SYuri Pankov# Decree 7,584 <http://pcdsh01.on.br/HVdecreto7584_20111013.jpg> (2011-10-13) 9154b8ee424SYuri Pankov# added Bahia. 916376a7c81SRobbin KawabataRule Brazil 2012 only - Feb Sun>=22 0:00 0 - 9174b8ee424SYuri Pankov# Decree 7,826 <http://pcdsh01.on.br/HVdecreto7826_20121015.jpg> (2012-10-15) 9184b8ee424SYuri Pankov# removed Bahia and added Tocantins. 9194b8ee424SYuri Pankov# Decree 8,112 <http://pcdsh01.on.br/HVdecreto8112_20130930.JPG> (2013-09-30) 9204b8ee424SYuri Pankov# removed Tocantins. 921376a7c81SRobbin KawabataRule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 922376a7c81SRobbin KawabataRule Brazil 2015 only - Feb Sun>=22 0:00 0 - 923374df668SAndy FiddamanRule Brazil 2016 2019 - Feb Sun>=15 0:00 0 - 9244b8ee424SYuri Pankov# From Steffen Thorsen (2017-12-18): 9254b8ee424SYuri Pankov# According to many media sources, next year's DST start in Brazil will move to 926374df668SAndy Fiddaman# the first Sunday of November 9274b8ee424SYuri Pankov# ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html 9284b8ee424SYuri Pankov# From Steffen Thorsen (2017-12-20): 9294b8ee424SYuri Pankov# http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm 93005e627dcSAndy Fiddaman# From Fábio Gomes (2018-10-04): 93105e627dcSAndy Fiddaman# The Brazilian president just announced a new change on this year DST. 93205e627dcSAndy Fiddaman# It was scheduled to start on November 4th and it was changed to November 18th. 93305e627dcSAndy Fiddaman# From Rodrigo Brüning Wessler (2018-10-15): 93405e627dcSAndy Fiddaman# The Brazilian government just announced that the change in DST was 93505e627dcSAndy Fiddaman# canceled.... Maybe the president Michel Temer also woke up one hour 93605e627dcSAndy Fiddaman# earlier today. :) 937374df668SAndy FiddamanRule Brazil 2018 only - Nov Sun>=1 0:00 1:00 - 938374df668SAndy Fiddaman# The last ruleset listed above says that the following states observed DST: 9397c478bd9Sstevel@tonic-gate# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 940374df668SAndy Fiddaman# 941374df668SAndy Fiddaman# From Steffen Thorsen (2019-04-05): 942374df668SAndy Fiddaman# According to multiple sources the Brazilian president wants to get rid of DST. 943374df668SAndy Fiddaman# https://gmconline.com.br/noticias/politica/bolsonaro-horario-de-verao-deve-acabar-este-ano 944374df668SAndy Fiddaman# https://g1.globo.com/economia/noticia/2019/04/05/governo-anuncia-fim-do-horario-de-verao.ghtml 945374df668SAndy Fiddaman# From Marcus Diniz (2019-04-25): 946374df668SAndy Fiddaman# Brazil no longer has DST changes - decree signed today 947374df668SAndy Fiddaman# https://g1.globo.com/politica/noticia/2019/04/25/bolsonaro-assina-decreto-que-acaba-com-o-horario-de-verao.ghtml 948374df668SAndy Fiddaman# From Daniel Soares de Oliveira (2019-04-26): 949374df668SAndy Fiddaman# http://www.planalto.gov.br/ccivil_03/_Ato2019-2022/2019/Decreto/D9772.htm 9507c478bd9Sstevel@tonic-gate 951374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 9527c478bd9Sstevel@tonic-gate# 9537c478bd9Sstevel@tonic-gate# Fernando de Noronha (administratively part of PE) 9547c478bd9Sstevel@tonic-gateZone America/Noronha -2:09:40 - LMT 1914 955dafc4501SDan McDonald -2:00 Brazil -02/-01 1990 Sep 17 956dafc4501SDan McDonald -2:00 - -02 1999 Sep 30 957dafc4501SDan McDonald -2:00 Brazil -02/-01 2000 Oct 15 958dafc4501SDan McDonald -2:00 - -02 2001 Sep 13 959dafc4501SDan McDonald -2:00 Brazil -02/-01 2002 Oct 1 960dafc4501SDan McDonald -2:00 - -02 9617c478bd9Sstevel@tonic-gate# Other Atlantic islands have no permanent settlement. 9626f8e8937SDan McDonald# These include Trindade and Martim Vaz (administratively part of ES), 9636f8e8937SDan McDonald# Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). 9647c478bd9Sstevel@tonic-gate# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 9657c478bd9Sstevel@tonic-gate# it also included the Penedos. 9667c478bd9Sstevel@tonic-gate# 9676f8e8937SDan McDonald# Amapá (AP), east Pará (PA) 9686f8e8937SDan McDonald# East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu. 9696f8e8937SDan McDonald# The division between east and west Pará is the river Xingu. 9707c478bd9Sstevel@tonic-gate# In the north a very small part from the river Javary (now Jari I guess, 9716f8e8937SDan McDonald# the border with Amapá) to the Amazon, then to the Xingu. 9727c478bd9Sstevel@tonic-gateZone America/Belem -3:13:56 - LMT 1914 973dafc4501SDan McDonald -3:00 Brazil -03/-02 1988 Sep 12 974dafc4501SDan McDonald -3:00 - -03 9757c478bd9Sstevel@tonic-gate# 9766f8e8937SDan McDonald# west Pará (PA) 9776f8e8937SDan McDonald# West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém. 97856725381SrobbinZone America/Santarem -3:38:48 - LMT 1914 979dafc4501SDan McDonald -4:00 Brazil -04/-03 1988 Sep 12 980dafc4501SDan McDonald -4:00 - -04 2008 Jun 24 0:00 981dafc4501SDan McDonald -3:00 - -03 98256725381Srobbin# 9836f8e8937SDan McDonald# Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), 9846f8e8937SDan McDonald# Paraíba (PB) 9857c478bd9Sstevel@tonic-gateZone America/Fortaleza -2:34:00 - LMT 1914 986dafc4501SDan McDonald -3:00 Brazil -03/-02 1990 Sep 17 987dafc4501SDan McDonald -3:00 - -03 1999 Sep 30 988dafc4501SDan McDonald -3:00 Brazil -03/-02 2000 Oct 22 989dafc4501SDan McDonald -3:00 - -03 2001 Sep 13 990dafc4501SDan McDonald -3:00 Brazil -03/-02 2002 Oct 1 991dafc4501SDan McDonald -3:00 - -03 9927c478bd9Sstevel@tonic-gate# 9937c478bd9Sstevel@tonic-gate# Pernambuco (PE) (except Atlantic islands) 9947c478bd9Sstevel@tonic-gateZone America/Recife -2:19:36 - LMT 1914 995dafc4501SDan McDonald -3:00 Brazil -03/-02 1990 Sep 17 996dafc4501SDan McDonald -3:00 - -03 1999 Sep 30 997dafc4501SDan McDonald -3:00 Brazil -03/-02 2000 Oct 15 998dafc4501SDan McDonald -3:00 - -03 2001 Sep 13 999dafc4501SDan McDonald -3:00 Brazil -03/-02 2002 Oct 1 1000dafc4501SDan McDonald -3:00 - -03 10017c478bd9Sstevel@tonic-gate# 10027c478bd9Sstevel@tonic-gate# Tocantins (TO) 10037c478bd9Sstevel@tonic-gateZone America/Araguaina -3:12:48 - LMT 1914 1004dafc4501SDan McDonald -3:00 Brazil -03/-02 1990 Sep 17 1005dafc4501SDan McDonald -3:00 - -03 1995 Sep 14 1006dafc4501SDan McDonald -3:00 Brazil -03/-02 2003 Sep 24 1007dafc4501SDan McDonald -3:00 - -03 2012 Oct 21 1008dafc4501SDan McDonald -3:00 Brazil -03/-02 2013 Sep 1009dafc4501SDan McDonald -3:00 - -03 10107c478bd9Sstevel@tonic-gate# 10117c478bd9Sstevel@tonic-gate# Alagoas (AL), Sergipe (SE) 10127c478bd9Sstevel@tonic-gateZone America/Maceio -2:22:52 - LMT 1914 1013dafc4501SDan McDonald -3:00 Brazil -03/-02 1990 Sep 17 1014dafc4501SDan McDonald -3:00 - -03 1995 Oct 13 1015dafc4501SDan McDonald -3:00 Brazil -03/-02 1996 Sep 4 1016dafc4501SDan McDonald -3:00 - -03 1999 Sep 30 1017dafc4501SDan McDonald -3:00 Brazil -03/-02 2000 Oct 22 1018dafc4501SDan McDonald -3:00 - -03 2001 Sep 13 1019dafc4501SDan McDonald -3:00 Brazil -03/-02 2002 Oct 1 1020dafc4501SDan McDonald -3:00 - -03 10217c478bd9Sstevel@tonic-gate# 10227c478bd9Sstevel@tonic-gate# Bahia (BA) 10237c478bd9Sstevel@tonic-gate# There are too many Salvadors elsewhere, so use America/Bahia instead 10247c478bd9Sstevel@tonic-gate# of America/Salvador. 10257c478bd9Sstevel@tonic-gateZone America/Bahia -2:34:04 - LMT 1914 1026dafc4501SDan McDonald -3:00 Brazil -03/-02 2003 Sep 24 1027dafc4501SDan McDonald -3:00 - -03 2011 Oct 16 1028dafc4501SDan McDonald -3:00 Brazil -03/-02 2012 Oct 21 1029dafc4501SDan McDonald -3:00 - -03 10307c478bd9Sstevel@tonic-gate# 10316f8e8937SDan McDonald# Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), 10326f8e8937SDan McDonald# Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), 10337c478bd9Sstevel@tonic-gate# Santa Catarina (SC), Rio Grande do Sul (RS) 10347c478bd9Sstevel@tonic-gateZone America/Sao_Paulo -3:06:28 - LMT 1914 1035dafc4501SDan McDonald -3:00 Brazil -03/-02 1963 Oct 23 0:00 1036dafc4501SDan McDonald -3:00 1:00 -02 1964 1037dafc4501SDan McDonald -3:00 Brazil -03/-02 10387c478bd9Sstevel@tonic-gate# 10397c478bd9Sstevel@tonic-gate# Mato Grosso do Sul (MS) 10407c478bd9Sstevel@tonic-gateZone America/Campo_Grande -3:38:28 - LMT 1914 1041dafc4501SDan McDonald -4:00 Brazil -04/-03 10427c478bd9Sstevel@tonic-gate# 10437c478bd9Sstevel@tonic-gate# Mato Grosso (MT) 10447c478bd9Sstevel@tonic-gateZone America/Cuiaba -3:44:20 - LMT 1914 1045dafc4501SDan McDonald -4:00 Brazil -04/-03 2003 Sep 24 1046dafc4501SDan McDonald -4:00 - -04 2004 Oct 1 1047dafc4501SDan McDonald -4:00 Brazil -04/-03 10487c478bd9Sstevel@tonic-gate# 10496f8e8937SDan McDonald# Rondônia (RO) 10507c478bd9Sstevel@tonic-gateZone America/Porto_Velho -4:15:36 - LMT 1914 1051dafc4501SDan McDonald -4:00 Brazil -04/-03 1988 Sep 12 1052dafc4501SDan McDonald -4:00 - -04 10537c478bd9Sstevel@tonic-gate# 10547c478bd9Sstevel@tonic-gate# Roraima (RR) 10557c478bd9Sstevel@tonic-gateZone America/Boa_Vista -4:02:40 - LMT 1914 1056dafc4501SDan McDonald -4:00 Brazil -04/-03 1988 Sep 12 1057dafc4501SDan McDonald -4:00 - -04 1999 Sep 30 1058dafc4501SDan McDonald -4:00 Brazil -04/-03 2000 Oct 15 1059dafc4501SDan McDonald -4:00 - -04 10607c478bd9Sstevel@tonic-gate# 10616f8e8937SDan McDonald# east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto 10627c478bd9Sstevel@tonic-gate# The great circle line from Tabatinga to Porto Acre divides 10637c478bd9Sstevel@tonic-gate# east from west Amazonas. 10647c478bd9Sstevel@tonic-gateZone America/Manaus -4:00:04 - LMT 1914 1065dafc4501SDan McDonald -4:00 Brazil -04/-03 1988 Sep 12 1066dafc4501SDan McDonald -4:00 - -04 1993 Sep 28 1067dafc4501SDan McDonald -4:00 Brazil -04/-03 1994 Sep 22 1068dafc4501SDan McDonald -4:00 - -04 10697c478bd9Sstevel@tonic-gate# 10707c478bd9Sstevel@tonic-gate# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 10716f8e8937SDan McDonald# Eirunepé, Envira, Ipixuna 10727c478bd9Sstevel@tonic-gateZone America/Eirunepe -4:39:28 - LMT 1914 1073dafc4501SDan McDonald -5:00 Brazil -05/-04 1988 Sep 12 1074dafc4501SDan McDonald -5:00 - -05 1993 Sep 28 1075dafc4501SDan McDonald -5:00 Brazil -05/-04 1994 Sep 22 1076dafc4501SDan McDonald -5:00 - -05 2008 Jun 24 0:00 1077dafc4501SDan McDonald -4:00 - -04 2013 Nov 10 1078dafc4501SDan McDonald -5:00 - -05 10797c478bd9Sstevel@tonic-gate# 10807c478bd9Sstevel@tonic-gate# Acre (AC) 10817c478bd9Sstevel@tonic-gateZone America/Rio_Branco -4:31:12 - LMT 1914 1082dafc4501SDan McDonald -5:00 Brazil -05/-04 1988 Sep 12 1083dafc4501SDan McDonald -5:00 - -05 2008 Jun 24 0:00 1084dafc4501SDan McDonald -4:00 - -04 2013 Nov 10 1085dafc4501SDan McDonald -5:00 - -05 10867c478bd9Sstevel@tonic-gate 10877c478bd9Sstevel@tonic-gate# Chile 10887c478bd9Sstevel@tonic-gate 108956b82ca8SDan McDonald# From Paul Eggert (2015-04-03): 109056b82ca8SDan McDonald# Shanks & Pottenger says America/Santiago introduced standard time in 10914b8ee424SYuri Pankov# 1890 and rounds its UT offset to 70W40; guess that in practice this 109256b82ca8SDan McDonald# was the same offset as in 1916-1919. It also says Pacific/Easter 109356b82ca8SDan McDonald# standardized on 109W22 in 1890; assume this didn't change the clocks. 109456b82ca8SDan McDonald# 109556b82ca8SDan McDonald# Dates for America/Santiago from 1910 to 2004 are primarily from 109656b82ca8SDan McDonald# the following source, cited by Oscar van Vlijmen (2006-10-08): 109756b82ca8SDan McDonald# [1] Chile Law 109856b82ca8SDan McDonald# http://www.webexhibits.org/daylightsaving/chile.html 1099b654b02dSYuri Pankov# This contains a copy of this official table: 110056b82ca8SDan McDonald# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) 1101b654b02dSYuri Pankov# https://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm 110256b82ca8SDan McDonald# [1] needs several corrections, though. 110356b82ca8SDan McDonald# 110456b82ca8SDan McDonald# The first set of corrections is from: 110556b82ca8SDan McDonald# [2] History of the Official Time of Chile 110656b82ca8SDan McDonald# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See: 1107b654b02dSYuri Pankov# https://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html 110856b82ca8SDan McDonald# This is an English translation of: 110956b82ca8SDan McDonald# Historia de la hora oficial de Chile (retrieved 2012-10-24). See: 1110b654b02dSYuri Pankov# https://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm 111156b82ca8SDan McDonald# A fancier Spanish version (requiring mouse-clicking) is at: 111256b82ca8SDan McDonald# http://www.horaoficial.cl/historia_hora.html 111356b82ca8SDan McDonald# Conflicts between [1] and [2] were resolved as follows: 111456b82ca8SDan McDonald# 111556b82ca8SDan McDonald# - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites 111656b82ca8SDan McDonald# Boletín No. 1, Aviso No. 1 (1910). Go with [2]. 111756b82ca8SDan McDonald# 111856b82ca8SDan McDonald# - [1] says SMT was -4:42:45, [2] says Chile's official time from 111956b82ca8SDan McDonald# 1916 to 1919 was -4:42:46.3, the meridian of Chile's National 112056b82ca8SDan McDonald# Astronomical Observatory (OAN), then located in what is now 112156b82ca8SDan McDonald# Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46. 112256b82ca8SDan McDonald# 112356b82ca8SDan McDonald# - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites 112456b82ca8SDan McDonald# Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2]. 112556b82ca8SDan McDonald# 112656b82ca8SDan McDonald# - [1] does not give times for transitions; assume they occur 112756b82ca8SDan McDonald# at midnight mainland time, the current common practice. However, 112856b82ca8SDan McDonald# go with [2]'s specification of 23:00 for the 1947-05-21 transition. 112956b82ca8SDan McDonald# 113056b82ca8SDan McDonald# Another correction to [1] is from Jesper Nørgaard Welen, who 113156b82ca8SDan McDonald# wrote (2006-10-08), "I think that there are some obvious mistakes in 113256b82ca8SDan McDonald# the suggested link from Oscar van Vlijmen,... for instance entry 66 113356b82ca8SDan McDonald# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at 113456b82ca8SDan McDonald# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16 113556b82ca8SDan McDonald# respectively), but anyhow it clears up some doubts too." 113656b82ca8SDan McDonald# 113756b82ca8SDan McDonald# Data for Pacific/Easter from 1910 through 1967 come from Shanks & 113856b82ca8SDan McDonald# Pottenger. After that, for lack of better info assume 113956b82ca8SDan McDonald# Pacific/Easter is always two hours behind America/Santiago; 114056b82ca8SDan McDonald# this is known to work for DST transitions starting in 2008 and 114156b82ca8SDan McDonald# may well be true for earlier transitions. 114256b82ca8SDan McDonald 11437c478bd9Sstevel@tonic-gate# From Eduardo Krell (1995-10-19): 11447c478bd9Sstevel@tonic-gate# The law says to switch to DST at midnight [24:00] on the second SATURDAY 11457c478bd9Sstevel@tonic-gate# of October.... The law is the same for March and October. 11467c478bd9Sstevel@tonic-gate# (1998-09-29): 11477c478bd9Sstevel@tonic-gate# Because of the drought this year, the government decided to go into 11487c478bd9Sstevel@tonic-gate# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 11497c478bd9Sstevel@tonic-gate# (unless there's another dry season next year, I guess). 11507c478bd9Sstevel@tonic-gate 11517c478bd9Sstevel@tonic-gate# From Julio I. Pacheco Troncoso (1999-03-18): 11527c478bd9Sstevel@tonic-gate# Because of the same drought, the government decided to end DST later, 11537c478bd9Sstevel@tonic-gate# on April 3, (one-time change). 11547c478bd9Sstevel@tonic-gate 11556f8e8937SDan McDonald# From Germán Poo-Caamaño (2008-03-03): 11568593320bSrobbin# Due to drought, Chile extends Daylight Time in three weeks. This 11578593320bSrobbin# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 11588593320bSrobbin# and Saturday 3/29 at 22:00 for Pacific/Easter) 1159a43ba736SRobert Mustacchi# The Supreme Decree is located at 11608593320bSrobbin# http://www.shoa.cl/servicios/supremo316.pdf 116156b82ca8SDan McDonald# 11626f8e8937SDan McDonald# From José Miguel Garrido (2008-03-05): 11638593320bSrobbin# http://www.shoa.cl/noticias/2008/04hora/hora.htm 11648593320bSrobbin 1165d8ff9d22SNobutomo Nakano# From Angel Chiang (2010-03-04): 1166d8ff9d22SNobutomo Nakano# Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1167d8ff9d22SNobutomo Nakano# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1168d8ff9d22SNobutomo Nakano# 11696f8e8937SDan McDonald# From Arthur David Olson (2010-03-06): 1170d8ff9d22SNobutomo Nakano# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1171d8ff9d22SNobutomo Nakano 1172abaa65c8SYuri Pankov# From Glenn Eychaner (2011-03-28): 1173abaa65c8SYuri Pankov# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1174abaa65c8SYuri Pankov# In English: 1175abaa65c8SYuri Pankov# Chile's clocks will go back an hour this year on the 7th of May instead 1176abaa65c8SYuri Pankov# of this Saturday. They will go forward again the 3rd Saturday in 117756b82ca8SDan McDonald# August, not in October as they have since 1968. 1178abaa65c8SYuri Pankov 1179a43ba736SRobert Mustacchi# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23): 1180a43ba736SRobert Mustacchi# As stated in the website of the Chilean Energy Ministry 1181a43ba736SRobert Mustacchi# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html 1182a43ba736SRobert Mustacchi# The Chilean Government has decided to postpone the entrance into winter time 118356b82ca8SDan McDonald# (to leave DST) from March 11 2012 to April 28th 2012.... 1184a43ba736SRobert Mustacchi# Quote from the website communication: 1185a43ba736SRobert Mustacchi# 1186a43ba736SRobert Mustacchi# 6. For the year 2012, the dates of entry into winter time will be as follows: 1187a43ba736SRobert Mustacchi# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at 1188a43ba736SRobert Mustacchi# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00 1189a43ba736SRobert Mustacchi# of the same day. 1190a43ba736SRobert Mustacchi# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is, 1191a43ba736SRobert Mustacchi# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be 1192a43ba736SRobert Mustacchi# 01:00 on September 2. 1193a43ba736SRobert Mustacchi 1194a43ba736SRobert Mustacchi# From Steffen Thorsen (2013-02-15): 1195a43ba736SRobert Mustacchi# According to several news sources, Chile has extended DST this year, 1196a43ba736SRobert Mustacchi# they will end DST later and start DST earlier than planned. They 1197a43ba736SRobert Mustacchi# hope to save energy. The new end date is 2013-04-28 00:00 and new 1198a43ba736SRobert Mustacchi# start date is 2013-09-08 00:00.... 1199a43ba736SRobert Mustacchi# http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm 1200a43ba736SRobert Mustacchi 12016f8e8937SDan McDonald# From José Miguel Garrido (2014-02-19): 12026f8e8937SDan McDonald# Today appeared in the Diario Oficial a decree amending the time change 12036f8e8937SDan McDonald# dates to 2014. 12046f8e8937SDan McDonald# DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC) 12056f8e8937SDan McDonald# DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC) 12066f8e8937SDan McDonald# http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf 12076f8e8937SDan McDonald 120856b82ca8SDan McDonald# From Eduardo Romero Urra (2015-03-03): 120956b82ca8SDan McDonald# Today has been published officially that Chile will use the DST time 121056b82ca8SDan McDonald# permanently until March 25 of 2017 121156b82ca8SDan McDonald# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg 121256b82ca8SDan McDonald# 121356b82ca8SDan McDonald# From Paul Eggert (2015-03-03): 121456b82ca8SDan McDonald# For now, assume that the extension will persist indefinitely. 1215a43ba736SRobert Mustacchi 1216f63cc156SDan McDonald# From Juan Correa (2016-03-18): 1217f63cc156SDan McDonald# The decree regarding DST has been published in today's Official Gazette: 1218f63cc156SDan McDonald# http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/ 1219f63cc156SDan McDonald# http://www.leychile.cl/Navegar?idNorma=1088502 1220f63cc156SDan McDonald# It does consider the second Saturday of May and August as the dates 1221f63cc156SDan McDonald# for the transition; and it lists DST dates until 2019, but I think 1222f63cc156SDan McDonald# this scheme will stick. 1223f63cc156SDan McDonald# 1224f63cc156SDan McDonald# From Paul Eggert (2016-03-18): 1225f63cc156SDan McDonald# For now, assume the pattern holds for the indefinite future. 1226f63cc156SDan McDonald# The decree says transitions occur at 24:00; in practice this appears 1227f63cc156SDan McDonald# to mean 24:00 mainland time, not 24:00 local time, so that Easter 1228f63cc156SDan McDonald# Island is always two hours behind the mainland. 1229f63cc156SDan McDonald 1230dafc4501SDan McDonald# From Juan Correa (2016-12-04): 1231dafc4501SDan McDonald# Magallanes region ... will keep DST (UTC -3) all year round.... 1232dafc4501SDan McDonald# http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-el-decreto-para-establecer-un-horario-unico-para-la-Region-de-Magallanes.aspx 1233dafc4501SDan McDonald# From Deborah Goldsmith (2017-01-19): 1234dafc4501SDan McDonald# http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf 1235dafc4501SDan McDonald 123605e627dcSAndy Fiddaman# From Juan Correa (2018-08-13): 123705e627dcSAndy Fiddaman# As of moments ago, the Ministry of Energy in Chile has announced the new 123805e627dcSAndy Fiddaman# schema for DST. ... Announcement in video (in Spanish): 123905e627dcSAndy Fiddaman# https://twitter.com/MinEnergia/status/1029000399129374720 124005e627dcSAndy Fiddaman# From Yonathan Dossow (2018-08-13): 124105e627dcSAndy Fiddaman# The video says "first Saturday of September", we all know it means Sunday at 124205e627dcSAndy Fiddaman# midnight. 124305e627dcSAndy Fiddaman# From Tim Parenti (2018-08-13): 124405e627dcSAndy Fiddaman# Translating the captions on the video at 0:44-0:55, "We want to announce as 124505e627dcSAndy Fiddaman# Government that from 2019, Winter Time will be increased to 5 months, between 124605e627dcSAndy Fiddaman# the first Saturday of April and the first Saturday of September." 124705e627dcSAndy Fiddaman# At 2:08-2:20, "The Magallanes region will maintain its current time, as 124805e627dcSAndy Fiddaman# decided by the citizens during 2017, but our Government will promote a 124905e627dcSAndy Fiddaman# regional dialogue table to gather their opinion on this matter." 125005e627dcSAndy Fiddaman# https://twitter.com/MinEnergia/status/1029009354001973248 125105e627dcSAndy Fiddaman# "We will keep the new time policy unchanged for at least the next 4 years." 125205e627dcSAndy Fiddaman# So we extend the new rules on Saturdays at 24:00 mainland time indefinitely. 1253374df668SAndy Fiddaman# From Juan Correa (2019-02-04): 1254374df668SAndy Fiddaman# http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf 1255374df668SAndy Fiddaman# From Paul Eggert (2019-09-01): 1256374df668SAndy Fiddaman# The above says the Magallanes exception expires 2022-04-02 at 24:00, 1257374df668SAndy Fiddaman# so in theory, they will revert to -04/-03 after that. 1258374df668SAndy Fiddaman# For now, assume that they will not revert, 1259374df668SAndy Fiddaman# since they have extended the expiration date once already. 126005e627dcSAndy Fiddaman 1261f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 12623508b934SYuri PankovRule Chile 1927 1931 - Sep 1 0:00 1:00 - 12637c478bd9Sstevel@tonic-gateRule Chile 1928 1932 - Apr 1 0:00 0 - 12643508b934SYuri PankovRule Chile 1968 only - Nov 3 4:00u 1:00 - 1265150c1068SrobbinRule Chile 1969 only - Mar 30 3:00u 0 - 12663508b934SYuri PankovRule Chile 1969 only - Nov 23 4:00u 1:00 - 1267150c1068SrobbinRule Chile 1970 only - Mar 29 3:00u 0 - 1268150c1068SrobbinRule Chile 1971 only - Mar 14 3:00u 0 - 12693508b934SYuri PankovRule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 - 1270150c1068SrobbinRule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 12713508b934SYuri PankovRule Chile 1973 only - Sep 30 4:00u 1:00 - 12723508b934SYuri PankovRule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 - 1273150c1068SrobbinRule Chile 1987 only - Apr 12 3:00u 0 - 127456b82ca8SDan McDonaldRule Chile 1988 1990 - Mar Sun>=9 3:00u 0 - 12753508b934SYuri PankovRule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 - 12763508b934SYuri PankovRule Chile 1990 only - Sep 16 4:00u 1:00 - 1277150c1068SrobbinRule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 12783508b934SYuri PankovRule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 - 1279150c1068SrobbinRule Chile 1997 only - Mar 30 3:00u 0 - 1280150c1068SrobbinRule Chile 1998 only - Mar Sun>=9 3:00u 0 - 12813508b934SYuri PankovRule Chile 1998 only - Sep 27 4:00u 1:00 - 12827c478bd9Sstevel@tonic-gateRule Chile 1999 only - Apr 4 3:00u 0 - 12833508b934SYuri PankovRule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 - 12848593320bSrobbinRule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 12858593320bSrobbin# N.B.: the end of March 29 in Chile is March 30 in Universal time, 12868593320bSrobbin# which is used below in specifying the transition. 12878593320bSrobbinRule Chile 2008 only - Mar 30 3:00u 0 - 1288d8ff9d22SNobutomo NakanoRule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1289abaa65c8SYuri PankovRule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1290abaa65c8SYuri PankovRule Chile 2011 only - May Sun>=2 3:00u 0 - 12913508b934SYuri PankovRule Chile 2011 only - Aug Sun>=16 4:00u 1:00 - 1292f63cc156SDan McDonaldRule Chile 2012 2014 - Apr Sun>=23 3:00u 0 - 12933508b934SYuri PankovRule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 - 129405e627dcSAndy FiddamanRule Chile 2016 2018 - May Sun>=9 3:00u 0 - 129505e627dcSAndy FiddamanRule Chile 2016 2018 - Aug Sun>=9 4:00u 1:00 - 129605e627dcSAndy FiddamanRule Chile 2019 max - Apr Sun>=2 3:00u 0 - 129705e627dcSAndy FiddamanRule Chile 2019 max - Sep Sun>=2 4:00u 1:00 - 1298150c1068Srobbin# IATA SSIM anomalies: (1992-02) says 1992-03-14; 12997c478bd9Sstevel@tonic-gate# (1996-09) says 1998-03-08. Ignore these. 1300374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 1301150c1068SrobbinZone America/Santiago -4:42:46 - LMT 1890 130256b82ca8SDan McDonald -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time 1303dafc4501SDan McDonald -5:00 - -05 1916 Jul 1 130456b82ca8SDan McDonald -4:42:46 - SMT 1918 Sep 10 1305dafc4501SDan McDonald -4:00 - -04 1919 Jul 1 130656b82ca8SDan McDonald -4:42:46 - SMT 1927 Sep 1 1307dafc4501SDan McDonald -5:00 Chile -05/-04 1932 Sep 1 1308dafc4501SDan McDonald -4:00 - -04 1942 Jun 1 1309dafc4501SDan McDonald -5:00 - -05 1942 Aug 1 1310dafc4501SDan McDonald -4:00 - -04 1946 Jul 15 1311dafc4501SDan McDonald -4:00 1:00 -03 1946 Sep 1 # central Chile 1312dafc4501SDan McDonald -4:00 - -04 1947 Apr 1 1313dafc4501SDan McDonald -5:00 - -05 1947 May 21 23:00 1314dafc4501SDan McDonald -4:00 Chile -04/-03 1315dafc4501SDan McDonaldZone America/Punta_Arenas -4:43:40 - LMT 1890 1316dafc4501SDan McDonald -4:42:46 - SMT 1910 Jan 10 1317dafc4501SDan McDonald -5:00 - -05 1916 Jul 1 1318dafc4501SDan McDonald -4:42:46 - SMT 1918 Sep 10 1319dafc4501SDan McDonald -4:00 - -04 1919 Jul 1 1320dafc4501SDan McDonald -4:42:46 - SMT 1927 Sep 1 1321dafc4501SDan McDonald -5:00 Chile -05/-04 1932 Sep 1 1322dafc4501SDan McDonald -4:00 - -04 1942 Jun 1 1323dafc4501SDan McDonald -5:00 - -05 1942 Aug 1 1324dafc4501SDan McDonald -4:00 - -04 1947 Apr 1 1325dafc4501SDan McDonald -5:00 - -05 1947 May 21 23:00 1326dafc4501SDan McDonald -4:00 Chile -04/-03 2016 Dec 4 1327dafc4501SDan McDonald -3:00 - -03 132856b82ca8SDan McDonaldZone Pacific/Easter -7:17:28 - LMT 1890 1329a68d064cSrobbin -7:17:28 - EMT 1932 Sep # Easter Mean Time 1330dafc4501SDan McDonald -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time 1331dafc4501SDan McDonald -6:00 Chile -06/-05 13327c478bd9Sstevel@tonic-gate# 13336f8e8937SDan McDonald# Salas y Gómez Island is uninhabited. 13346f8e8937SDan McDonald# Other Chilean locations, including Juan Fernández Is, Desventuradas Is, 13356f8e8937SDan McDonald# and Antarctic bases, are like America/Santiago. 13367c478bd9Sstevel@tonic-gate 133756b82ca8SDan McDonald# Antarctic base using South American rules 133856b82ca8SDan McDonald# (See the file 'antarctica' for more.) 133956b82ca8SDan McDonald# 134056b82ca8SDan McDonald# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) 134156b82ca8SDan McDonald# 134256b82ca8SDan McDonald# From Ethan Dicks (1996-10-06): 134356b82ca8SDan McDonald# It keeps the same time as Punta Arenas, Chile, because, just like us 134456b82ca8SDan McDonald# and the South Pole, that's the other end of their supply line.... 134556b82ca8SDan McDonald# I verified with someone who was there that since 1980, 134656b82ca8SDan McDonald# Palmer has followed Chile. Prior to that, before the Falklands War, 134756b82ca8SDan McDonald# Palmer used to be supplied from Argentina. 134856b82ca8SDan McDonald# 1349374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 1350c2d5ab87SDan McDonaldZone Antarctica/Palmer 0 - -00 1965 1351dafc4501SDan McDonald -4:00 Arg -04/-03 1969 Oct 5 1352dafc4501SDan McDonald -3:00 Arg -03/-02 1982 May 1353dafc4501SDan McDonald -4:00 Chile -04/-03 2016 Dec 4 1354dafc4501SDan McDonald -3:00 - -03 135556b82ca8SDan McDonald 13567c478bd9Sstevel@tonic-gate# Colombia 1357a43ba736SRobert Mustacchi 13586f8e8937SDan McDonald# Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, 1359a43ba736SRobert Mustacchi# "A variation of fifteen minutes in the public clocks of Bogota is not rare." 1360a43ba736SRobert Mustacchi 1361f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 13623508b934SYuri PankovRule CO 1992 only - May 3 0:00 1:00 - 13632f9aa4a7SrobbinRule CO 1993 only - Apr 4 0:00 0 - 1364374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 1365a43ba736SRobert MustacchiZone America/Bogota -4:56:16 - LMT 1884 Mar 13 13666f8e8937SDan McDonald -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time 1367dafc4501SDan McDonald -5:00 CO -05/-04 13687c478bd9Sstevel@tonic-gate# Malpelo, Providencia, San Andres 13697c478bd9Sstevel@tonic-gate# no information; probably like America/Bogota 13707c478bd9Sstevel@tonic-gate 13716f8e8937SDan McDonald# Curaçao 1372*06965442SAndy Fiddaman# See America/Puerto_Rico. 1373a68d064cSrobbin# 1374abaa65c8SYuri Pankov# From Arthur David Olson (2011-06-15): 1375a43ba736SRobert Mustacchi# use links for places with new iso3166 codes. 13766f8e8937SDan McDonald# The name "Lower Prince's Quarter" is both longer than fourteen characters 1377*06965442SAndy Fiddaman# and contains an apostrophe; use "Lower_Princes".... 1378*06965442SAndy Fiddaman# From Paul Eggert (2021-09-29): 1379*06965442SAndy Fiddaman# These backward-compatibility links now are in the 'northamerica' file. 1380abaa65c8SYuri Pankov 13817c478bd9Sstevel@tonic-gate# Ecuador 1382a68d064cSrobbin# 13836f8e8937SDan McDonald# Milne says the Central and South American Telegraph Company used -5:24:15. 1384a43ba736SRobert Mustacchi# 1385dafc4501SDan McDonald# From Alois Treindl (2016-12-15): 1386b654b02dSYuri Pankov# https://www.elcomercio.com/actualidad/hora-sixto-1993.html 1387dafc4501SDan McDonald# ... Whether the law applied also to Galápagos, I do not know. 1388dafc4501SDan McDonald# From Paul Eggert (2016-12-15): 1389b654b02dSYuri Pankov# https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html 1390dafc4501SDan McDonald# This says President Sixto Durán Ballén signed decree No. 285, which 1391dafc4501SDan McDonald# established DST from 1992-11-28 to 1993-02-05; it does not give transition 1392dafc4501SDan McDonald# times. The people called it "hora de Sixto" ("Sixto hour"). The change did 1393dafc4501SDan McDonald# not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics 1394dafc4501SDan McDonald# that included "Amanecía en mitad de la noche, los guaguas iban a clase sin 1395dafc4501SDan McDonald# sol" ("It was dawning in the middle of the night, the buses went to class 1396dafc4501SDan McDonald# without sun"). Although Ballén's campaign slogan was "Ni un paso atrás" 1397dafc4501SDan McDonald# (Not one step back), the clocks went back in 1993 and the experiment was not 1398dafc4501SDan McDonald# repeated. For now, assume transitions were at 00:00 local time country-wide. 1399dafc4501SDan McDonald# 1400f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 14013508b934SYuri PankovRule Ecuador 1992 only - Nov 28 0:00 1:00 - 1402dafc4501SDan McDonaldRule Ecuador 1993 only - Feb 5 0:00 0 - 1403a68d064cSrobbin# 1404374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 14057c478bd9Sstevel@tonic-gateZone America/Guayaquil -5:19:20 - LMT 1890 14067c478bd9Sstevel@tonic-gate -5:14:00 - QMT 1931 # Quito Mean Time 1407dafc4501SDan McDonald -5:00 Ecuador -05/-04 14087c478bd9Sstevel@tonic-gateZone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1409dafc4501SDan McDonald -5:00 - -05 1986 1410dafc4501SDan McDonald -6:00 Ecuador -06/-05 14117c478bd9Sstevel@tonic-gate 14127c478bd9Sstevel@tonic-gate# Falklands 14137c478bd9Sstevel@tonic-gate 14142f9aa4a7Srobbin# From Paul Eggert (2006-03-22): 14152f9aa4a7Srobbin# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 14162f9aa4a7Srobbin# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 14177c478bd9Sstevel@tonic-gate 14187c478bd9Sstevel@tonic-gate# From Falkland Islands Government Office, London (2001-01-22) 14196f8e8937SDan McDonald# via Jesper Nørgaard: 14207c478bd9Sstevel@tonic-gate# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 14217c478bd9Sstevel@tonic-gate# April 2001 and advance one hour to summer time at 2 am on Sunday 2 14227c478bd9Sstevel@tonic-gate# September. It is anticipated that the clocks will revert back at 2 14237c478bd9Sstevel@tonic-gate# am on Sunday 21 April 2002 and advance to summer time at 2 am on 14247c478bd9Sstevel@tonic-gate# Sunday 1 September. 14257c478bd9Sstevel@tonic-gate 14267c478bd9Sstevel@tonic-gate# From Rives McDow (2001-02-13): 14277c478bd9Sstevel@tonic-gate# 14287c478bd9Sstevel@tonic-gate# I have communicated several times with people there, and the last 14297c478bd9Sstevel@tonic-gate# time I had communications that was helpful was in 1998. Here is 14307c478bd9Sstevel@tonic-gate# what was said then: 14317c478bd9Sstevel@tonic-gate# 14327c478bd9Sstevel@tonic-gate# "The general rule was that Stanley used daylight saving and the Camp 14337c478bd9Sstevel@tonic-gate# did not. However for various reasons many people in the Camp have 14347c478bd9Sstevel@tonic-gate# started to use daylight saving (known locally as 'Stanley Time') 14357c478bd9Sstevel@tonic-gate# There is no rule as to who uses daylight saving - it is a matter of 14367c478bd9Sstevel@tonic-gate# personal choice and so it is impossible to draw a map showing who 14377c478bd9Sstevel@tonic-gate# uses it and who does not. Any list would be out of date as soon as 14387c478bd9Sstevel@tonic-gate# it was produced. This year daylight saving ended on April 18/19th 14397c478bd9Sstevel@tonic-gate# and started again on September 12/13th. I do not know what the rule 14407c478bd9Sstevel@tonic-gate# is, but can find out if you like. We do not change at the same time 14417c478bd9Sstevel@tonic-gate# as UK or Chile." 14427c478bd9Sstevel@tonic-gate# 14437c478bd9Sstevel@tonic-gate# I did have in my notes that the rule was "Second Saturday in Sep at 14447c478bd9Sstevel@tonic-gate# 0:00 until third Saturday in Apr at 0:00". I think that this does 14457c478bd9Sstevel@tonic-gate# not agree in some cases with Shanks; is this true? 14467c478bd9Sstevel@tonic-gate# 14477c478bd9Sstevel@tonic-gate# Also, there is no mention in the list that some areas in the 14487c478bd9Sstevel@tonic-gate# Falklands do not use DST. I have found in my communications there 14497c478bd9Sstevel@tonic-gate# that these areas are on the western half of East Falkland and all of 14507c478bd9Sstevel@tonic-gate# West Falkland. Stanley is the only place that consistently observes 14517c478bd9Sstevel@tonic-gate# DST. Again, as in other places in the world, the farmers don't like 14527c478bd9Sstevel@tonic-gate# it. West Falkland is almost entirely sheep farmers. 14537c478bd9Sstevel@tonic-gate# 14547c478bd9Sstevel@tonic-gate# I know one lady there that keeps a list of which farm keeps DST and 14557c478bd9Sstevel@tonic-gate# which doesn't each year. She runs a shop in Stanley, and says that 14567c478bd9Sstevel@tonic-gate# the list changes each year. She uses it to communicate to her 14577c478bd9Sstevel@tonic-gate# customers, catching them when they are home for lunch or dinner. 14587c478bd9Sstevel@tonic-gate 14597c478bd9Sstevel@tonic-gate# From Paul Eggert (2001-03-05): 14607c478bd9Sstevel@tonic-gate# For now, we'll just record the time in Stanley, since we have no 14617c478bd9Sstevel@tonic-gate# better info. 14627c478bd9Sstevel@tonic-gate 1463abaa65c8SYuri Pankov# From Steffen Thorsen (2011-04-01): 1464abaa65c8SYuri Pankov# The Falkland Islands will not turn back clocks this winter, but stay on 1465abaa65c8SYuri Pankov# daylight saving time. 1466abaa65c8SYuri Pankov# 1467abaa65c8SYuri Pankov# One source: 1468abaa65c8SYuri Pankov# http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1469abaa65c8SYuri Pankov# 1470abaa65c8SYuri Pankov# We have gotten this confirmed by a clerk of the legislative assembly: 1471abaa65c8SYuri Pankov# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1472abaa65c8SYuri Pankov# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1473abaa65c8SYuri Pankov# hours) on the first Sunday of September at 0200hrs. 1474abaa65c8SYuri Pankov# 1475abaa65c8SYuri Pankov# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1476abaa65c8SYuri Pankov# will not revert to local mean time, but clocks will remain on Summer 1477abaa65c8SYuri Pankov# time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1478abaa65c8SYuri Pankov# change to local time following the trial period will be notified. 1479a43ba736SRobert Mustacchi# 1480a43ba736SRobert Mustacchi# From Andrew Newman (2012-02-24) 1481a43ba736SRobert Mustacchi# A letter from Justin McPhee, Chief Executive, 1482a43ba736SRobert Mustacchi# Cable & Wireless Falkland Islands (dated 2012-02-22) 1483a43ba736SRobert Mustacchi# states... 1484a43ba736SRobert Mustacchi# The current Atlantic/Stanley entry under South America expects the 1485a43ba736SRobert Mustacchi# clocks to go back to standard Falklands Time (FKT) on the 15th April. 1486a43ba736SRobert Mustacchi# The database entry states that in 2011 Stanley was staying on fixed 1487a43ba736SRobert Mustacchi# summer time on a trial basis only. FIG need to contact IANA and/or 1488a43ba736SRobert Mustacchi# the maintainers of the database to inform them we're adopting 1489a43ba736SRobert Mustacchi# the same policy this year and suggest recommendations for future years. 1490a43ba736SRobert Mustacchi# 14913508b934SYuri Pankov# For now we will assume permanent -03 for the Falklands 1492a43ba736SRobert Mustacchi# until advised differently (to apply for 2012 and beyond, after the 2011 1493a43ba736SRobert Mustacchi# experiment was apparently successful.) 1494f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 14953508b934SYuri PankovRule Falk 1937 1938 - Sep lastSun 0:00 1:00 - 14967c478bd9Sstevel@tonic-gateRule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 14973508b934SYuri PankovRule Falk 1939 only - Oct 1 0:00 1:00 - 14983508b934SYuri PankovRule Falk 1940 1942 - Sep lastSun 0:00 1:00 - 14997c478bd9Sstevel@tonic-gateRule Falk 1943 only - Jan 1 0:00 0 - 15003508b934SYuri PankovRule Falk 1983 only - Sep lastSun 0:00 1:00 - 15017c478bd9Sstevel@tonic-gateRule Falk 1984 1985 - Apr lastSun 0:00 0 - 15023508b934SYuri PankovRule Falk 1984 only - Sep 16 0:00 1:00 - 15033508b934SYuri PankovRule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 - 15047c478bd9Sstevel@tonic-gateRule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1505abaa65c8SYuri PankovRule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 15063508b934SYuri PankovRule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 - 1507374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 15087c478bd9Sstevel@tonic-gateZone Atlantic/Stanley -3:51:24 - LMT 1890 15096f8e8937SDan McDonald -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1510dafc4501SDan McDonald -4:00 Falk -04/-03 1983 May 1511dafc4501SDan McDonald -3:00 Falk -03/-02 1985 Sep 15 1512dafc4501SDan McDonald -4:00 Falk -04/-03 2010 Sep 5 2:00 1513dafc4501SDan McDonald -3:00 - -03 15147c478bd9Sstevel@tonic-gate 15157c478bd9Sstevel@tonic-gate# French Guiana 1516374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 15177c478bd9Sstevel@tonic-gateZone America/Cayenne -3:29:20 - LMT 1911 Jul 1518dafc4501SDan McDonald -4:00 - -04 1967 Oct 1519dafc4501SDan McDonald -3:00 - -03 15207c478bd9Sstevel@tonic-gate 15217c478bd9Sstevel@tonic-gate# Guyana 1522*06965442SAndy Fiddaman 1523*06965442SAndy Fiddaman# From P Chan (2020-11-27): 1524*06965442SAndy Fiddaman# https://books.google.com/books?id=5-5CAQAAMAAJ&pg=SA1-PA547 1525*06965442SAndy Fiddaman# The Official Gazette of British Guiana. (New Series.) Vol. XL. July to 1526*06965442SAndy Fiddaman# December, 1915, p 1547, lists as several notes: 1527*06965442SAndy Fiddaman# "Local Mean Time 3 hours 52 mins. 39 secs. slow of Greenwich Mean Time 1528*06965442SAndy Fiddaman# (Georgetown.) From 1st August, 1911, British Guiana Standard Mean Time 4 1529*06965442SAndy Fiddaman# hours slow of Greenwich Mean Time, by notice in Official Gazette on 1st July, 1530*06965442SAndy Fiddaman# 1911. From 1st March, 1915, British Guiana Standard Mean Time 3 hours 45 1531*06965442SAndy Fiddaman# mins. 0 secs. slow of Greenwich Mean Time, by notice in Official Gazette on 1532*06965442SAndy Fiddaman# 23rd January, 1915." 1533*06965442SAndy Fiddaman# 1534*06965442SAndy Fiddaman# https://parliament.gov.gy/documents/acts/10923-act_no._27_of_1975_-_interpretation_and_general_clauses_(amendment)_act_1975.pdf 1535*06965442SAndy Fiddaman# Interpretation and general clauses (Amendment) Act 1975 (Act No. 27 of 1975) 1536*06965442SAndy Fiddaman# [dated 1975-07-31] 1537*06965442SAndy Fiddaman# "This Act...shall come into operation on 1st August, 1975." 1538*06965442SAndy Fiddaman# "...where any expression of time occurs...the time referred to shall signify 1539*06965442SAndy Fiddaman# the standard time of Guyana which shall be three hours behind Greenwich Mean 1540*06965442SAndy Fiddaman# Time." 1541*06965442SAndy Fiddaman# 1542*06965442SAndy Fiddaman# Circular No. 10/1992 dated 1992-03-20 1543*06965442SAndy Fiddaman# https://dps.gov.gy/wp-content/uploads/2018/12/1992-03-20-Circular-010.pdf 1544*06965442SAndy Fiddaman# "...cabinet has decided that with effect from Sunday 29th March, 1992, Guyana 1545*06965442SAndy Fiddaman# Standard Time would be re-established at 01:00 hours by adjusting the hands 1546*06965442SAndy Fiddaman# of the clock back to 24:00 hours." 1547*06965442SAndy Fiddaman# Legislated in the Interpretation and general clauses (Amendment) Act 1992 1548*06965442SAndy Fiddaman# (Act No. 6 of 1992) [passed 1992-03-27, published 1992-04-18] 1549*06965442SAndy Fiddaman# https://parliament.gov.gy/documents/acts/5885-6_of_1992_interpretation_and_general_clauses_(amendment)_act_1992.pdf 1550*06965442SAndy Fiddaman 1551374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 1552*06965442SAndy FiddamanZone America/Guyana -3:52:39 - LMT 1911 Aug 1 # Georgetown 1553*06965442SAndy Fiddaman -4:00 - -04 1915 Mar 1 1554*06965442SAndy Fiddaman -3:45 - -0345 1975 Aug 1 1555*06965442SAndy Fiddaman -3:00 - -03 1992 Mar 29 1:00 1556dafc4501SDan McDonald -4:00 - -04 15577c478bd9Sstevel@tonic-gate 15587c478bd9Sstevel@tonic-gate# Paraguay 1559a43ba736SRobert Mustacchi# 15602f9aa4a7Srobbin# From Paul Eggert (2006-03-22): 15616f8e8937SDan McDonald# Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, 15626f8e8937SDan McDonald# and autumn transitions are 00:00 -> 23:00. Go with pre-1999 15637c478bd9Sstevel@tonic-gate# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1564a43ba736SRobert Mustacchi# 1565a43ba736SRobert Mustacchi# From Waldemar Villamayor-Venialbo (2013-09-20): 1566a43ba736SRobert Mustacchi# No time of the day is established for the adjustment, so people normally 1567a43ba736SRobert Mustacchi# adjust their clocks at 0 hour of the given dates. 1568a43ba736SRobert Mustacchi# 1569f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 15703508b934SYuri PankovRule Para 1975 1988 - Oct 1 0:00 1:00 - 15717c478bd9Sstevel@tonic-gateRule Para 1975 1978 - Mar 1 0:00 0 - 15727c478bd9Sstevel@tonic-gateRule Para 1979 1991 - Apr 1 0:00 0 - 15733508b934SYuri PankovRule Para 1989 only - Oct 22 0:00 1:00 - 15743508b934SYuri PankovRule Para 1990 only - Oct 1 0:00 1:00 - 15753508b934SYuri PankovRule Para 1991 only - Oct 6 0:00 1:00 - 15767c478bd9Sstevel@tonic-gateRule Para 1992 only - Mar 1 0:00 0 - 15773508b934SYuri PankovRule Para 1992 only - Oct 5 0:00 1:00 - 15787c478bd9Sstevel@tonic-gateRule Para 1993 only - Mar 31 0:00 0 - 15793508b934SYuri PankovRule Para 1993 1995 - Oct 1 0:00 1:00 - 15807c478bd9Sstevel@tonic-gateRule Para 1994 1995 - Feb lastSun 0:00 0 - 15817c478bd9Sstevel@tonic-gateRule Para 1996 only - Mar 1 0:00 0 - 15827c478bd9Sstevel@tonic-gate# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 15837c478bd9Sstevel@tonic-gate# From Steffen Thorsen (2000-10-02): 15847c478bd9Sstevel@tonic-gate# I have three independent reports that Paraguay changed to DST this Sunday 15857c478bd9Sstevel@tonic-gate# (10-01). 15867c478bd9Sstevel@tonic-gate# 15877c478bd9Sstevel@tonic-gate# Translated by Gwillim Law (2001-02-27) from 15886f8e8937SDan McDonald# Noticias, a daily paper in Asunción, Paraguay (2000-10-01): 15896f8e8937SDan McDonald# http://www.diarionoticias.com.py/011000/nacional/naciona1.htm 15907c478bd9Sstevel@tonic-gate# Starting at 0:00 today, the clock will be set forward 60 minutes, in 15917c478bd9Sstevel@tonic-gate# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 15927c478bd9Sstevel@tonic-gate# system has been operating for several years. Formerly there was a separate 15937c478bd9Sstevel@tonic-gate# decree each year; the new law has the same effect, but permanently. Every 15947c478bd9Sstevel@tonic-gate# year, the time will change on the first Sunday of October; likewise, the 15957c478bd9Sstevel@tonic-gate# clock will be set back on the first Sunday of March. 15967c478bd9Sstevel@tonic-gate# 15973508b934SYuri PankovRule Para 1996 2001 - Oct Sun>=1 0:00 1:00 - 15982f9aa4a7Srobbin# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 15997c478bd9Sstevel@tonic-gateRule Para 1997 only - Feb lastSun 0:00 0 - 16002f9aa4a7Srobbin# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 16017c478bd9Sstevel@tonic-gate# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 16027c478bd9Sstevel@tonic-gateRule Para 1998 2001 - Mar Sun>=1 0:00 0 - 16037c478bd9Sstevel@tonic-gate# From Rives McDow (2002-02-28): 160456b82ca8SDan McDonald# A decree was issued in Paraguay (No. 16350) on 2002-02-26 that changed the 16057c478bd9Sstevel@tonic-gate# dst method to be from the first Sunday in September to the first Sunday in 16067c478bd9Sstevel@tonic-gate# April. 160780868c53SrobbinRule Para 2002 2004 - Apr Sun>=1 0:00 0 - 16083508b934SYuri PankovRule Para 2002 2003 - Sep Sun>=1 0:00 1:00 - 160980868c53Srobbin# 16106f8e8937SDan McDonald# From Jesper Nørgaard Welen (2005-01-02): 161180868c53Srobbin# There are several sources that claim that Paraguay made 161280868c53Srobbin# a timezone rule change in autumn 2004. 161380868c53Srobbin# From Steffen Thorsen (2005-01-05): 1614150c1068Srobbin# Decree 1,867 (2004-03-05) 16156f8e8937SDan McDonald# From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13) 16166f8e8937SDan McDonald# http://www.presidencia.gov.py/decretos/D1867.pdf 16173508b934SYuri PankovRule Para 2004 2009 - Oct Sun>=15 0:00 1:00 - 1618d8ff9d22SNobutomo NakanoRule Para 2005 2009 - Mar Sun>=8 0:00 0 - 16196f8e8937SDan McDonald# From Carlos Raúl Perasso (2010-02-18): 16206f8e8937SDan McDonald# By decree number 3958 issued yesterday 1621d8ff9d22SNobutomo Nakano# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1622d8ff9d22SNobutomo Nakano# Paraguay changes its DST schedule, postponing the March rule to April and 1623d8ff9d22SNobutomo Nakano# modifying the October date. The decree reads: 1624d8ff9d22SNobutomo Nakano# ... 1625d8ff9d22SNobutomo Nakano# Art. 1. It is hereby established that from the second Sunday of the month of 1626d8ff9d22SNobutomo Nakano# April of this year (2010), the official time is to be set back 60 minutes, 1627d8ff9d22SNobutomo Nakano# and that on the first Sunday of the month of October, it is to be set 1628d8ff9d22SNobutomo Nakano# forward 60 minutes, in all the territory of the Paraguayan Republic. 1629d8ff9d22SNobutomo Nakano# ... 16303508b934SYuri PankovRule Para 2010 max - Oct Sun>=1 0:00 1:00 - 1631a43ba736SRobert MustacchiRule Para 2010 2012 - Apr Sun>=8 0:00 0 - 1632a43ba736SRobert Mustacchi# 1633a43ba736SRobert Mustacchi# From Steffen Thorsen (2013-03-07): 1634a43ba736SRobert Mustacchi# Paraguay will end DST on 2013-03-24 00:00.... 1635a43ba736SRobert Mustacchi# http://www.ande.gov.py/interna.php?id=1075 1636a43ba736SRobert Mustacchi# 16376f8e8937SDan McDonald# From Carlos Raúl Perasso (2013-03-15): 1638a43ba736SRobert Mustacchi# The change in Paraguay is now final. Decree number 10780 1639a43ba736SRobert Mustacchi# http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf 16406f8e8937SDan McDonald# From Carlos Raúl Perasso (2014-02-28): 16416f8e8937SDan McDonald# Decree 1264 can be found at: 16426f8e8937SDan McDonald# http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf 1643a43ba736SRobert MustacchiRule Para 2013 max - Mar Sun>=22 0:00 0 - 16447c478bd9Sstevel@tonic-gate 1645374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 16467c478bd9Sstevel@tonic-gateZone America/Asuncion -3:50:40 - LMT 1890 16476f8e8937SDan McDonald -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time 1648dafc4501SDan McDonald -4:00 - -04 1972 Oct 1649dafc4501SDan McDonald -3:00 - -03 1974 Apr 1650dafc4501SDan McDonald -4:00 Para -04/-03 16517c478bd9Sstevel@tonic-gate 16527c478bd9Sstevel@tonic-gate# Peru 16537c478bd9Sstevel@tonic-gate# 16546f8e8937SDan McDonald# From Evelyn C. Leeper via Mark Brader (2003-10-26) 16556f8e8937SDan McDonald# <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>: 165680868c53Srobbin# When we were in Peru in 1985-1986, they apparently switched over 16577c478bd9Sstevel@tonic-gate# sometime between December 29 and January 3 while we were on the Amazon. 16587c478bd9Sstevel@tonic-gate# 16592f9aa4a7Srobbin# From Paul Eggert (2006-03-22): 16602f9aa4a7Srobbin# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 16617c478bd9Sstevel@tonic-gate 1662f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 16633508b934SYuri PankovRule Peru 1938 only - Jan 1 0:00 1:00 - 16647c478bd9Sstevel@tonic-gateRule Peru 1938 only - Apr 1 0:00 0 - 16653508b934SYuri PankovRule Peru 1938 1939 - Sep lastSun 0:00 1:00 - 16667c478bd9Sstevel@tonic-gateRule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 16673508b934SYuri PankovRule Peru 1986 1987 - Jan 1 0:00 1:00 - 16687c478bd9Sstevel@tonic-gateRule Peru 1986 1987 - Apr 1 0:00 0 - 16693508b934SYuri PankovRule Peru 1990 only - Jan 1 0:00 1:00 - 16707c478bd9Sstevel@tonic-gateRule Peru 1990 only - Apr 1 0:00 0 - 16712f9aa4a7Srobbin# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 16723508b934SYuri PankovRule Peru 1994 only - Jan 1 0:00 1:00 - 16737c478bd9Sstevel@tonic-gateRule Peru 1994 only - Apr 1 0:00 0 - 1674374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 16757c478bd9Sstevel@tonic-gateZone America/Lima -5:08:12 - LMT 1890 16767c478bd9Sstevel@tonic-gate -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1677dafc4501SDan McDonald -5:00 Peru -05/-04 16787c478bd9Sstevel@tonic-gate 16797c478bd9Sstevel@tonic-gate# South Georgia 1680374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 16816f8e8937SDan McDonaldZone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1682dafc4501SDan McDonald -2:00 - -02 16837c478bd9Sstevel@tonic-gate 16847c478bd9Sstevel@tonic-gate# South Sandwich Is 16857c478bd9Sstevel@tonic-gate# uninhabited; scientific personnel have wintered 16867c478bd9Sstevel@tonic-gate 16877c478bd9Sstevel@tonic-gate# Suriname 1688374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 16897c478bd9Sstevel@tonic-gateZone America/Paramaribo -3:40:40 - LMT 1911 16907c478bd9Sstevel@tonic-gate -3:40:52 - PMT 1935 # Paramaribo Mean Time 16916f8e8937SDan McDonald -3:40:36 - PMT 1945 Oct # The capital moved? 1692dafc4501SDan McDonald -3:30 - -0330 1984 Oct 1693dafc4501SDan McDonald -3:00 - -03 16947c478bd9Sstevel@tonic-gate 16957c478bd9Sstevel@tonic-gate# Trinidad and Tobago 1696*06965442SAndy Fiddaman# See America/Puerto_Rico. 1697a43ba736SRobert Mustacchi 16987c478bd9Sstevel@tonic-gate# Uruguay 169980868c53Srobbin# From Paul Eggert (1993-11-18): 17007c478bd9Sstevel@tonic-gate# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 17013508b934SYuri Pankov# 17023508b934SYuri Pankov# From Tim Parenti (2018-02-20), per Jeremie Bonjour (2018-01-31) and Michael 17033508b934SYuri Pankov# Deckers (2018-02-20): 17043508b934SYuri Pankov# ... At least they kept good records... 17053508b934SYuri Pankov# 17063508b934SYuri Pankov# http://www.armada.mil.uy/ContenidosPDFs/sohma/web/almanaque/almanaque_2018.pdf#page=36 17073508b934SYuri Pankov# Page 36 of Almanaque 2018, published by the Oceanography, Hydrography, and 17083508b934SYuri Pankov# Meteorology Service of the Uruguayan Navy, seems to give many transitions 17093508b934SYuri Pankov# with greater clarity than we've had before. It directly references many laws 17103508b934SYuri Pankov# and decrees which are, in turn, referenced below. They can be viewed in the 17113508b934SYuri Pankov# public archives of the Diario Oficial (in Spanish) at 17123508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/ 17133508b934SYuri Pankov# 17143508b934SYuri Pankov# Ley No. 3920 of 1908-06-10 placed the determination of legal time under the 17153508b934SYuri Pankov# auspices of the National Institute for the Prediction of Time. It is unclear 17163508b934SYuri Pankov# exactly what offset was used during this period, though Ley No. 7200 of 17173508b934SYuri Pankov# 1920-04-23 used the Observatory of the National Meteorological Institute in 17183508b934SYuri Pankov# Montevideo (34° 54' 33" S, 56° 12' 45" W) as its reference meridian, 17193508b934SYuri Pankov# retarding legal time by 15 minutes 9 seconds from 1920-04-30 24:00, 17203508b934SYuri Pankov# resulting in UT-04. Assume the corresponding LMT of UT-03:44:51 (given on 17213508b934SYuri Pankov# page 725 of the Proceedings of the Second Pan-American Scientific Congress, 17223508b934SYuri Pankov# 1915-1916) was in use, and merely became official from 1908-06-10. 17233508b934SYuri Pankov# https://www.impo.com.uy/diariooficial/1908/06/18/12 17243508b934SYuri Pankov# https://www.impo.com.uy/diariooficial/1920/04/27/9 17253508b934SYuri Pankov# 17263508b934SYuri Pankov# Ley No. 7594 of 1923-06-28 specified legal time as Observatory time advanced 17273508b934SYuri Pankov# by 44 minutes 51 seconds (UT-03) "from 30 September to 31 March", and by 14 17283508b934SYuri Pankov# minutes 51 seconds (UT-03:30) "the rest of the year"; a message from the 17293508b934SYuri Pankov# National Council of Administration the same day, published directly below the 17303508b934SYuri Pankov# law in the Diario Oficial, specified the first transition to be 1923-09-30 17313508b934SYuri Pankov# 24:00. This effectively established standard time at UT-03:30 with 30 17323508b934SYuri Pankov# minutes DST. Assume transitions at 24:00 on the specified days until Ley No. 17333508b934SYuri Pankov# 7919 of 1926-03-05 ended this arrangement, repealing all "laws and other 17343508b934SYuri Pankov# provisions which oppose" it, resulting in year-round UT-03:30; a Resolución 17353508b934SYuri Pankov# of 1926-03-11 puts the final transition at 1926-03-31 24:00, the same as it 17363508b934SYuri Pankov# would have been under the previous law. 17373508b934SYuri Pankov# https://www.impo.com.uy/diariooficial/1923/07/02/2 17383508b934SYuri Pankov# https://www.impo.com.uy/diariooficial/1926/03/10/2 17393508b934SYuri Pankov# https://www.impo.com.uy/diariooficial/1926/03/18/2 17403508b934SYuri Pankov# 1741f915e6d3SRobert Mustacchi# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 17423508b934SYuri PankovRule Uruguay 1923 1925 - Oct 1 0:00 0:30 - 17437c478bd9Sstevel@tonic-gateRule Uruguay 1924 1926 - Apr 1 0:00 0 - 17443508b934SYuri Pankov# From Tim Parenti (2018-02-15): 17453508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1933/10/27/6 17463508b934SYuri Pankov# 17473508b934SYuri Pankov# It appears Ley No. 9122 of 1933 was never published as such in the Diario 17483508b934SYuri Pankov# Oficial, but instead appeared as Document 26 in the Diario on Friday 17493508b934SYuri Pankov# 1933-10-27 as a decree made Monday 1933-10-23 and filed under the Ministry of 17503508b934SYuri Pankov# National Defense. It reinstituted a DST of 30 minutes (to UT-03) "from the 17513508b934SYuri Pankov# last Sunday of October...until the last Saturday of March." In accordance 17523508b934SYuri Pankov# with this provision, the first transition was explicitly specified in Article 17533508b934SYuri Pankov# 2 of the decree as Saturday 1933-10-28 at 24:00; that is, Sunday 1933-10-29 17543508b934SYuri Pankov# at 00:00. Assume transitions at 00:00 Sunday throughout. 17553508b934SYuri Pankov# 17563508b934SYuri Pankov# Departing from the matter-of-fact nature of previous timekeeping laws, the 17573508b934SYuri Pankov# 1933 decree "consider[s] the advantages of...the advance of legal time": 17583508b934SYuri Pankov# 17593508b934SYuri Pankov# "Whereas: The measure adopted by almost all nations at the time of the last 17603508b934SYuri Pankov# World War still persists in North America and Europe, precisely because of 17613508b934SYuri Pankov# the economic, hygienic, and social advantages derived from such an 17623508b934SYuri Pankov# emergency measure... 17633508b934SYuri Pankov# 17643508b934SYuri Pankov# Whereas: The advance of the legal time during the summer seasons, by 17653508b934SYuri Pankov# displacing social activity near sunrise, favors the citizen populations 17663508b934SYuri Pankov# and especially the society that creates and works..." 17673508b934SYuri Pankov# 17683508b934SYuri Pankov# It further specified that "necessary measures" be taken to ensure that 17693508b934SYuri Pankov# "public spectacles finish, in general, before [01:00]." 17703508b934SYuri PankovRule Uruguay 1933 1938 - Oct lastSun 0:00 0:30 - 17713508b934SYuri PankovRule Uruguay 1934 1941 - Mar lastSat 24:00 0 - 17723508b934SYuri Pankov# From Tim Parenti (2018-02-15): 17733508b934SYuri Pankov# Most of the Rules below, and their contemporaneous Zone lines, have been 17743508b934SYuri Pankov# updated simply to match the Almanaque 2018. Although the document does not 17753508b934SYuri Pankov# list exact transition times, midnight transitions were already present in our 17763508b934SYuri Pankov# data here for all transitions through 2004-09, and this is both consistent 17773508b934SYuri Pankov# with prior transitions and verified in several decrees marked below between 17783508b934SYuri Pankov# 1939-09 and 2004-09, wherein the relevant text was typically of the form: 17793508b934SYuri Pankov# 17803508b934SYuri Pankov# "From 0 hours on [date], the legal time of the entire Republic will be... 17813508b934SYuri Pankov# 17823508b934SYuri Pankov# In accordance with [the preceding], on [previous date] at 24 hours, all 17833508b934SYuri Pankov# clocks throughout the Republic will be [advanced/retarded] by..." 17843508b934SYuri Pankov# 17853508b934SYuri Pankov# It is possible that there is greater specificity to be found for the Rules 17863508b934SYuri Pankov# below, but it is buried in no fewer than 40 different decrees individually 17873508b934SYuri Pankov# referenced by the Almanaque for the period from 1939-09 to 2014-09. 17883508b934SYuri Pankov# Four-fifths of these were promulgated less than two weeks before taking 17893508b934SYuri Pankov# effect; more than half within a week and none more than 5 weeks. Only the 17903508b934SYuri Pankov# handful with comments below have been checked with any thoroughness. 17913508b934SYuri PankovRule Uruguay 1939 only - Oct 1 0:00 0:30 - 17923508b934SYuri PankovRule Uruguay 1940 only - Oct 27 0:00 0:30 - 17933508b934SYuri Pankov# From Tim Parenti (2018-02-15): 17943508b934SYuri Pankov# Decreto 1145 of the Ministry of National Defense, dated 1941-07-26, specified 17953508b934SYuri Pankov# UT-03 from Friday 1941-08-01 00:00, citing an "urgent...need to save fuel". 17963508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1941/08/04/1 17973508b934SYuri PankovRule Uruguay 1941 only - Aug 1 0:00 0:30 - 17983508b934SYuri Pankov# From Tim Parenti (2018-02-15): 17993508b934SYuri Pankov# Decreto 1866 of the Ministry of National Defense, dated 1942-12-09, specified 18003508b934SYuri Pankov# further advancement (to UT-02:30) from Sunday 1942-12-13 24:00. Since clocks 18013508b934SYuri Pankov# never went back to UT-03:30 thereafter, this is modeled as advancing standard 18023508b934SYuri Pankov# time by 30 minutes to UT-03, while retaining 30 minutes of DST. 18033508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1942/12/16/3 18043508b934SYuri PankovRule Uruguay 1942 only - Dec 14 0:00 0:30 - 18057c478bd9Sstevel@tonic-gateRule Uruguay 1943 only - Mar 14 0:00 0 - 18063508b934SYuri PankovRule Uruguay 1959 only - May 24 0:00 0:30 - 18077c478bd9Sstevel@tonic-gateRule Uruguay 1959 only - Nov 15 0:00 0 - 18083508b934SYuri PankovRule Uruguay 1960 only - Jan 17 0:00 1:00 - 18097c478bd9Sstevel@tonic-gateRule Uruguay 1960 only - Mar 6 0:00 0 - 18103508b934SYuri PankovRule Uruguay 1965 only - Apr 4 0:00 1:00 - 18117c478bd9Sstevel@tonic-gateRule Uruguay 1965 only - Sep 26 0:00 0 - 18123508b934SYuri Pankov# From Tim Parenti (2018-02-15): 18133508b934SYuri Pankov# Decreto 321/968 of 1968-05-25, citing emergency drought measures decreed the 18143508b934SYuri Pankov# day before, brought clocks forward 30 minutes from Monday 1968-05-27 00:00. 18153508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1968/05/30/5 18163508b934SYuri PankovRule Uruguay 1968 only - May 27 0:00 0:30 - 18173508b934SYuri PankovRule Uruguay 1968 only - Dec 1 0:00 0 - 18183508b934SYuri Pankov# From Tim Parenti (2018-02-15): 18193508b934SYuri Pankov# Decreto 188/970 of 1970-04-23 instituted restrictions on electricity 18203508b934SYuri Pankov# consumption "as a consequence of the current rainfall regime in the country". 18213508b934SYuri Pankov# Articles 13 and 14 advanced clocks by an hour from Saturday 1970-04-25 00:00. 18223508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1970/04/29/4 18233508b934SYuri PankovRule Uruguay 1970 only - Apr 25 0:00 1:00 - 18243508b934SYuri PankovRule Uruguay 1970 only - Jun 14 0:00 0 - 18253508b934SYuri PankovRule Uruguay 1972 only - Apr 23 0:00 1:00 - 18263508b934SYuri PankovRule Uruguay 1972 only - Jul 16 0:00 0 - 18273508b934SYuri Pankov# From Tim Parenti (2018-02-15): 18283508b934SYuri Pankov# Decreto 29/974 of 1974-01-11, citing "the international rise in the price of 18293508b934SYuri Pankov# oil", advanced clocks by 90 minutes (to UT-01:30). Decreto 163/974 of 18303508b934SYuri Pankov# 1974-03-04 returned 60 of those minutes (to UT-02:30), and the remaining 30 18313508b934SYuri Pankov# minutes followed in Decreto 679/974 of 1974-08-29. 18323508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1974/01/22/11 18333508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1974/03/14/3 18343508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1974/09/04/6 18353508b934SYuri PankovRule Uruguay 1974 only - Jan 13 0:00 1:30 - 18363508b934SYuri PankovRule Uruguay 1974 only - Mar 10 0:00 0:30 - 18373508b934SYuri PankovRule Uruguay 1974 only - Sep 1 0:00 0 - 18383508b934SYuri PankovRule Uruguay 1974 only - Dec 22 0:00 1:00 - 18393508b934SYuri PankovRule Uruguay 1975 only - Mar 30 0:00 0 - 18403508b934SYuri PankovRule Uruguay 1976 only - Dec 19 0:00 1:00 - 18413508b934SYuri PankovRule Uruguay 1977 only - Mar 6 0:00 0 - 18423508b934SYuri PankovRule Uruguay 1977 only - Dec 4 0:00 1:00 - 18433508b934SYuri PankovRule Uruguay 1978 1979 - Mar Sun>=1 0:00 0 - 18443508b934SYuri PankovRule Uruguay 1978 only - Dec 17 0:00 1:00 - 18453508b934SYuri PankovRule Uruguay 1979 only - Apr 29 0:00 1:00 - 18463508b934SYuri PankovRule Uruguay 1980 only - Mar 16 0:00 0 - 18473508b934SYuri Pankov# From Tim Parenti (2018-02-15): 18483508b934SYuri Pankov# Decreto 725/987 of 1987-12-04 cited "better use of national tourist 18493508b934SYuri Pankov# attractions" to advance clocks one hour from Monday 1987-12-14 00:00. 18503508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/1988/01/25/1 18513508b934SYuri PankovRule Uruguay 1987 only - Dec 14 0:00 1:00 - 18523508b934SYuri PankovRule Uruguay 1988 only - Feb 28 0:00 0 - 18533508b934SYuri PankovRule Uruguay 1988 only - Dec 11 0:00 1:00 - 18543508b934SYuri PankovRule Uruguay 1989 only - Mar 5 0:00 0 - 18553508b934SYuri PankovRule Uruguay 1989 only - Oct 29 0:00 1:00 - 18563508b934SYuri PankovRule Uruguay 1990 only - Feb 25 0:00 0 - 18573508b934SYuri Pankov# From Tim Parenti (2018-02-15), per Paul Eggert (1999-11-04): 18583508b934SYuri Pankov# IATA agrees as below for 1990-10 through 1993-02. Per Almanaque 2018, the 18593508b934SYuri Pankov# 1992/1993 season appears to be the first in over half a century where DST 18603508b934SYuri Pankov# both began and ended pursuant to the same decree. 18613508b934SYuri PankovRule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 - 18623508b934SYuri PankovRule Uruguay 1991 1992 - Mar Sun>=1 0:00 0 - 18633508b934SYuri PankovRule Uruguay 1992 only - Oct 18 0:00 1:00 - 18647c478bd9Sstevel@tonic-gateRule Uruguay 1993 only - Feb 28 0:00 0 - 18657c478bd9Sstevel@tonic-gate# From Eduardo Cota (2004-09-20): 18666f8e8937SDan McDonald# The Uruguayan government has decreed a change in the local time.... 18673508b934SYuri Pankov# From Tim Parenti (2018-02-15): 18683508b934SYuri Pankov# Decreto 328/004 of 2004-09-15. 18693508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/2004/09/23/documentos.pdf#page=1 18703508b934SYuri PankovRule Uruguay 2004 only - Sep 19 0:00 1:00 - 187180868c53Srobbin# From Steffen Thorsen (2005-03-11): 187280868c53Srobbin# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 187380868c53Srobbin# save energy ... it was postponed two weeks.... 18743508b934SYuri Pankov# From Tim Parenti (2018-02-15): 18753508b934SYuri Pankov# This 2005 postponement is not in Almanaque 2018. Go with the contemporaneous 18763508b934SYuri Pankov# reporting, which is confirmed by Decreto 107/005 of 2005-03-10 amending 18773508b934SYuri Pankov# Decreto 328/004: 18783508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/2005/03/15/documentos.pdf#page=1 18793508b934SYuri Pankov# The original decree specified a transition of 2005-03-12 24:00, but the new 18803508b934SYuri Pankov# one specified 2005-03-27 02:00. 188180868c53SrobbinRule Uruguay 2005 only - Mar 27 2:00 0 - 188280868c53Srobbin# From Eduardo Cota (2005-09-27): 18833508b934SYuri Pankov# ...from 2005-10-09 at 02:00 local time, until 2006-03-12 at 02:00 local time, 18843508b934SYuri Pankov# official time in Uruguay will be at GMT -2. 18853508b934SYuri Pankov# From Tim Parenti (2018-02-15): 18863508b934SYuri Pankov# Decreto 318/005 of 2005-09-19. 18873508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/2005/09/23/documentos.pdf#page=1 18883508b934SYuri PankovRule Uruguay 2005 only - Oct 9 2:00 1:00 - 18893508b934SYuri PankovRule Uruguay 2006 2015 - Mar Sun>=8 2:00 0 - 18903508b934SYuri Pankov# From Tim Parenti (2018-02-15), per Jesper Nørgaard Welen (2006-09-06): 18913508b934SYuri Pankov# Decreto 311/006 of 2006-09-04 established regular DST from the first Sunday 18923508b934SYuri Pankov# of October at 02:00 through the second Sunday of March at 02:00. Almanaque 18933508b934SYuri Pankov# 2018 appears to have a few typoed dates through this period; ignore them. 18943508b934SYuri Pankov# http://www.impo.com.uy/diariooficial/2006/09/08/documentos.pdf#page=1 18953508b934SYuri PankovRule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 - 189656b82ca8SDan McDonald# From Steffen Thorsen (2015-06-30): 189756b82ca8SDan McDonald# ... it looks like they will not be using DST the coming summer: 189856b82ca8SDan McDonald# http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787 189956b82ca8SDan McDonald# http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/ 190056b82ca8SDan McDonald# From Paul Eggert (2015-06-30): 190156b82ca8SDan McDonald# Apparently restaurateurs complained that DST caused people to go to the beach 190256b82ca8SDan McDonald# instead of out to dinner. 190356b82ca8SDan McDonald# From Pablo Camargo (2015-07-13): 190456b82ca8SDan McDonald# http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf 19053508b934SYuri Pankov# From Tim Parenti (2018-02-15): 19063508b934SYuri Pankov# Decreto 178/015 of 2015-06-29; repeals Decreto 311/006. 1907dafc4501SDan McDonald 1908dafc4501SDan McDonald# This Zone can be simplified once we assume zic %z. 19093508b934SYuri PankovZone America/Montevideo -3:44:51 - LMT 1908 Jun 10 19103508b934SYuri Pankov -3:44:51 - MMT 1920 May 1 # Montevideo MT 19113508b934SYuri Pankov -4:00 - -04 1923 Oct 1 1912dafc4501SDan McDonald -3:30 Uruguay -0330/-03 1942 Dec 14 19133508b934SYuri Pankov -3:00 Uruguay -03/-0230 1960 1914dafc4501SDan McDonald -3:00 Uruguay -03/-02 1968 19153508b934SYuri Pankov -3:00 Uruguay -03/-0230 1970 1916dafc4501SDan McDonald -3:00 Uruguay -03/-02 1974 19173508b934SYuri Pankov -3:00 Uruguay -03/-0130 1974 Mar 10 1918dafc4501SDan McDonald -3:00 Uruguay -03/-0230 1974 Dec 22 1919dafc4501SDan McDonald -3:00 Uruguay -03/-02 19207c478bd9Sstevel@tonic-gate 19217c478bd9Sstevel@tonic-gate# Venezuela 1922538f0434Srobbin# 192356b82ca8SDan McDonald# From Paul Eggert (2015-07-28): 192456b82ca8SDan McDonald# For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533 192556b82ca8SDan McDonald# http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf 192656b82ca8SDan McDonald# 192717d9c33fSrobbin# From John Stainforth (2007-11-28): 192817d9c33fSrobbin# ... the change for Venezuela originally expected for 2007-12-31 has 192917d9c33fSrobbin# been brought forward to 2007-12-09. The official announcement was 19306f8e8937SDan McDonald# published today in the "Gaceta Oficial de la República Bolivariana 19316f8e8937SDan McDonald# de Venezuela, número 38.819" (official document for all laws or 193217d9c33fSrobbin# resolution publication) 193317d9c33fSrobbin# http://www.globovision.com/news.php?nid=72208 1934538f0434Srobbin 1935c2d5ab87SDan McDonald# From Alexander Krivenyshev (2016-04-15): 1936c2d5ab87SDan McDonald# https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino 1937c2d5ab87SDan McDonald# 1938c2d5ab87SDan McDonald# From Paul Eggert (2016-04-15): 1939c2d5ab87SDan McDonald# Clocks advance 30 minutes on 2016-05-01 at 02:30.... 1940c2d5ab87SDan McDonald# "'Venezuela's new time-zone: hours without light, hours without water, 1941c2d5ab87SDan McDonald# hours of presidential broadcasts, hours of lines,' quipped comedian 1942c2d5ab87SDan McDonald# Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps 1943c2d5ab87SDan McDonald# half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400 1944b654b02dSYuri Pankov# https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE 1945c2d5ab87SDan McDonald# 1946c2d5ab87SDan McDonald# From Matt Johnson (2016-04-20): 1947c2d5ab87SDan McDonald# ... published in the official Gazette [2016-04-18], here: 1948c2d5ab87SDan McDonald# http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf 1949c2d5ab87SDan McDonald 1950374df668SAndy Fiddaman# Zone NAME STDOFF RULES FORMAT [UNTIL] 19517c478bd9Sstevel@tonic-gateZone America/Caracas -4:27:44 - LMT 1890 19527c478bd9Sstevel@tonic-gate -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1953dafc4501SDan McDonald -4:30 - -0430 1965 Jan 1 0:00 1954dafc4501SDan McDonald -4:00 - -04 2007 Dec 9 3:00 1955dafc4501SDan McDonald -4:30 - -0430 2016 May 1 2:30 1956dafc4501SDan McDonald -4:00 - -04 1957