1# @(#)southamerica 8.34 2# <pre> 3 4# This data is by no means authoritative; if you think you know better, 5# go ahead and edit the file (and please send any changes to 6# tz@elsie.nci.nih.gov for general use in the future). 7 8# From Paul Eggert (2006-03-22): 9# A good source for time zone historical data outside the U.S. is 10# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 11# San Diego: ACS Publications, Inc. (2003). 12# 13# Gwillim Law writes that a good source 14# for recent time zone data is the International Air Transport 15# Association's Standard Schedules Information Manual (IATA SSIM), 16# published semiannually. Law sent in several helpful summaries 17# of the IATA's data after 1990. 18# 19# Except where otherwise noted, Shanks & Pottenger is the source for 20# entries through 1990, and IATA SSIM is the source for entries afterwards. 21# 22# Earlier editions of these tables used the North American style (e.g. ARST and 23# ARDT for Argentine Standard and Daylight Time), but the following quote 24# suggests that it's better to use European style (e.g. ART and ARST). 25# I suggest the use of _Summer time_ instead of the more cumbersome 26# _daylight-saving time_. _Summer time_ seems to be in general use 27# in Europe and South America. 28# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 29# H L Mencken, _The American Language: Supplement I_ (1960), p 466 30# 31# Earlier editions of these tables also used the North American style 32# for time zones in Brazil, but this was incorrect, as Brazilians say 33# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 34# the railroad sector, writes (1999-07-06): 35# The subject of time zones is currently a matter of discussion/debate in 36# Brazil. Let's say that "the Brasilia time" is considered the 37# "official time" because Brasilia is the capital city. 38# The other three time zones are called "Brasilia time "minus one" or 39# "plus one" or "plus two". As far as I know there is no such 40# name/designation as "Eastern Time" or "Central Time". 41# So I invented the following (English-language) abbreviations for now. 42# Corrections are welcome! 43# std dst 44# -2:00 FNT FNST Fernando de Noronha 45# -3:00 BRT BRST Brasilia 46# -4:00 AMT AMST Amazon 47# -5:00 ACT ACST Acre 48 49############################################################################### 50 51############################################################################### 52 53# Argentina 54 55# From Bob Devine (1988-01-28): 56# Argentina: first Sunday in October to first Sunday in April since 1976. 57# Double Summer time from 1969 to 1974. Switches at midnight. 58 59# From U. S. Naval Observatory (1988-01-199): 60# ARGENTINA 3 H BEHIND UTC 61 62# From Hernan G. Otero (1995-06-26): 63# I am sending modifications to the Argentine time zone table... 64# AR was chosen because they are the ISO letters that represent Argentina. 65 66# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 67Rule Arg 1930 only - Dec 1 0:00 1:00 S 68Rule Arg 1931 only - Apr 1 0:00 0 - 69Rule Arg 1931 only - Oct 15 0:00 1:00 S 70Rule Arg 1932 1940 - Mar 1 0:00 0 - 71Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 72Rule Arg 1940 only - Jul 1 0:00 1:00 S 73Rule Arg 1941 only - Jun 15 0:00 0 - 74Rule Arg 1941 only - Oct 15 0:00 1:00 S 75Rule Arg 1943 only - Aug 1 0:00 0 - 76Rule Arg 1943 only - Oct 15 0:00 1:00 S 77Rule Arg 1946 only - Mar 1 0:00 0 - 78Rule Arg 1946 only - Oct 1 0:00 1:00 S 79Rule Arg 1963 only - Oct 1 0:00 0 - 80Rule Arg 1963 only - Dec 15 0:00 1:00 S 81Rule Arg 1964 1966 - Mar 1 0:00 0 - 82Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 83Rule Arg 1967 only - Apr 2 0:00 0 - 84Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 85Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 86Rule Arg 1974 only - Jan 23 0:00 1:00 S 87Rule Arg 1974 only - May 1 0:00 0 - 88Rule Arg 1988 only - Dec 1 0:00 1:00 S 89# 90# From Hernan G. Otero (1995-06-26): 91# These corrections were contributed by InterSoft Argentina S.A., 92# obtaining the data from the: 93# Talleres de Hidrografia Naval Argentina 94# (Argentine Naval Hydrography Institute) 95Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 96Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 97# 98# From Hernan G. Otero (1995-06-26): 99# From this moment on, the law that mandated the daylight saving 100# time corrections was derogated and no more modifications 101# to the time zones (for daylight saving) are now made. 102# 103# From Rives McDow (2000-01-10): 104# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 105# which did not result in the switch of a time zone, as they stayed 9 hours 106# from the International Date Line. 107Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 108# From Paul Eggert (2007-12-28): 109# DST was set to expire on March 5, not March 3, but since it was converted 110# to standard time on March 3 it's more convenient for us to pretend that 111# it ended on March 3. 112Rule Arg 2000 only - Mar 3 0:00 0 - 113# 114# From Peter Gradelski via Steffen Thorsen (2000-03-01): 115# We just checked with our Sao Paulo office and they say the government of 116# Argentina decided not to become one of the countries that go on or off DST. 117# So Buenos Aires should be -3 hours from GMT at all times. 118# 119# From Fabian L. Arce Jofre (2000-04-04): 120# The law that claimed DST for Argentina was derogated by President Fernando 121# de la Rua on March 2, 2000, because it would make people spend more energy 122# in the winter time, rather than less. The change took effect on March 3. 123# 124# From Mariano Absatz (2001-06-06): 125# one of the major newspapers here in Argentina said that the 1999 126# Timezone Law (which never was effectively applied) will (would?) be 127# in effect.... The article is at 128# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 129# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 130# 1999-09-17, and published 1999-09-21. The official publication is at: 131# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 132# Regretfully, you have to subscribe (and pay) for the on-line version.... 133# 134# (2001-06-12): 135# the timezone for Argentina will not change next Sunday. 136# Apparently it will do so on Sunday 24th.... 137# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 138# 139# (2001-06-25): 140# Last Friday (yes, the last working day before the date of the change), the 141# Senate annulled the 1999 law that introduced the changes later postponed. 142# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 143# It remains the vote of the Deputies..., but it will be the same.... 144# This kind of things had always been done this way in Argentina. 145# We are still -03:00 all year round in all of the country. 146# 147# From Steffen Thorsen (2007-12-21): 148# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 149# all of the country (all Zone-entries) are affected. News reports like 150# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 151# that Argentina will use DST next year as well, from October to 152# March, although exact rules are not given. 153# 154# From Jesper Norgaard Welen (2007-12-26) 155# The last hurdle of Argentina DST is over, the proposal was approved in 156# the lower chamber too (Deputados) with a vote 192 for and 2 against. 157# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 158# the original scanned proposal, where the dates and the zero hours are 159# clear and unambiguous...This is the article about final approval: 160# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 161# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 162# </a> 163# 164# From Paul Eggert (2007-12-22): 165# For dates after mid-2008, the following rules are my guesses and 166# are quite possibly wrong, but are more likely than no DST at all. 167 168# From Alexander Krivenyshev (2008-09-05): 169# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 170# Argentina will start DST on Sunday October 19, 2008. 171# 172# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 173# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 174# </a> 175# OR 176# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 177# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 178# </a> 179 180# From Rodrigo Severo (2008-10-06): 181# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 182# ... 183# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 184# Hi, there is a problem with timezone-data-2008e and maybe with 185# timezone-data-2008f 186# Argentinian law [Number] 25.155 is no longer valid. 187# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 188# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 189# </a> 190# The new one is law [Number] 26.350 191# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 192# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 193# </a> 194# So there is no summer time in Argentina for now. 195 196# From Mariano Absatz (2008-10-20): 197# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 198# From 2008-10-19 until 2009-03-15 199# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 200# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 201# </a> 202# 203# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 204# Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 205# and Tierra del Fuego 206# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 207# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 208# </a> 209# 210# Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 211# it will not apply DST either (even when it was not included in Decree 1705/2008) 212# <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 213# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 214# </a> 215 216Rule Arg 2007 only - Dec 30 0:00 1:00 S 217Rule Arg 2008 max - Mar Sun>=15 0:00 0 - 218Rule Arg 2008 max - Oct Sun>=15 0:00 1:00 S 219 220# From Mariano Absatz (2004-05-21): 221# Today it was officially published that the Province of Mendoza is changing 222# its timezone this winter... starting tomorrow night.... 223# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 224# From Paul Eggert (2004-05-24): 225# It's Law No. 7,210. This change is due to a public power emergency, so for 226# now we'll assume it's for this year only. 227# 228# From Paul Eggert (2006-03-22): 229# <a href="http://www.spicasc.net/horvera.html"> 230# Hora de verano para la Republica Argentina (2003-06-08) 231# </a> says that standard time in Argentina from 1894-10-31 232# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 233# over Shanks & Pottenger. 234# 235# From Mariano Absatz (2004-06-05): 236# These media articles from a major newspaper mostly cover the current state: 237# http://www.lanacion.com.ar/04/05/27/de_604825.asp 238# http://www.lanacion.com.ar/04/05/28/de_605203.asp 239# 240# The following eight (8) provinces pulled clocks back to UTC-04:00 at 241# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 242# Apparently, all nine provinces would go back to UTC-03:00 at the same 243# time in October 17th. 244# 245# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 246# Tierra del Fuego, Tucuman. 247# 248# From Mariano Absatz (2004-06-14): 249# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 250# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 251# annoyance with the change is much higher than the power savings obtained.... 252# 253# From Gwillim Law (2004-06-14): 254# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 255# "The time change in Tierra del Fuego was a conflicted decision from 256# the start. The government had decreed that the measure would take 257# effect on June 1, but a normative error forced the new time to begin 258# three days earlier, from a Saturday to a Sunday.... 259# Our understanding was that the change was originally scheduled to take place 260# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 261# provinces). Sunday was May 30, only two days earlier. So the article 262# contains a contradiction. I would give more credence to the Saturday/Sunday 263# date than the "three days earlier" phrase, and conclude that Tierra del 264# Fuego set its clocks back at 2004-05-30 00:00. 265# 266# From Steffen Thorsen (2004-10-05): 267# The previous law 7210 which changed the province of Mendoza's time zone 268# back in May have been modified slightly in a new law 7277, which set the 269# new end date to 2004-09-26 (original date was 2004-10-17). 270# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 271# 272# From Mariano Absatz (2004-10-05): 273# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 274# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 275# at midnight between Saturday, July 24th and Sunday, July 25th.... 276# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 277# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 278# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 279 280# From Alex Krivenyshev (2008-01-17): 281# Here are articles that Argentina Province San Luis is planning to end DST 282# as earlier as upcoming Monday January 21, 2008 or February 2008: 283# 284# Provincia argentina retrasa reloj y marca diferencia con resto del pais 285# (Argentine Province delayed clock and mark difference with the rest of the 286# country) 287# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 288# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 289# </a> 290# 291# Es inminente que en San Luis atrasen una hora los relojes 292# (It is imminent in San Luis clocks one hour delay) 293# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 294# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 295# </a> 296# 297# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 298# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 299# </a> 300 301# From Jesper Norgaard Welen (2008-01-18): 302# The page of the San Luis provincial government 303# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 304# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 305# </a> 306# confirms what Alex Krivenyshev has earlier sent to the tz 307# emailing list about that San Luis plans to return to standard 308# time much earlier than the rest of the country. It also 309# confirms that upon request the provinces San Juan and Mendoza 310# refused to follow San Luis in this change. 311# 312# The change is supposed to take place Monday the 21.st at 0:00 313# hours. As far as I understand it if this goes ahead, we need 314# a new timezone for San Luis (although there are also documented 315# independent changes in the southamerica file of San Luis in 316# 1990 and 1991 which has not been confirmed). 317 318# From Jesper Norgaard Welen (2008-01-25): 319# Unfortunately the below page has become defunct, about the San Luis 320# time change. Perhaps because it now is part of a group of pages "Most 321# important pages of 2008." 322# 323# You can use 324# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 325# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 326# </a> 327# instead it seems. Or use "Buscador" from the main page of the San Luis 328# government, and fill in "huso" and click OK, and you will get 3 pages 329# from which the first one is identical to the above. 330 331# From Mariano Absatz (2008-01-28): 332# I can confirm that the Province of San Luis (and so far only that 333# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 334# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 335# 1 hour), and they intend to keep UTC-3 as their timezone all year round 336# (that is, unless they change their mind any minute now). 337# 338# So we'll have to add yet another city to 'southamerica' (I think San 339# Luis city is the mos populated city in the Province, so it'd be 340# America/Argentina/San_Luis... of course I can't remember if San Luis's 341# history of particular changes goes along with Mendoza or San Juan :-( 342# (I only remember not being able to collect hard facts about San Luis 343# back in 2004, when these provinces changed to UTC-4 for a few days, I 344# mailed them personally and never got an answer). 345 346# From Paul Eggert (2008-06-30): 347# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 348# from the IATA otherwise. As noted below, Shanks & Pottenger say that 349# America/Cordoba split into 6 subregions during 1991/1992, one of which 350# was America/San_Luis, but we haven't verified this yet so for now we'll 351# keep America/Cordoba a single region rather than splitting it into the 352# other 5 subregions. 353 354# From Mariano Absatz (2009-03-13): 355# Yesterday (with our usual 2-day notice) the Province of San Luis 356# decided that next Sunday instead of "staying" @utc-03:00 they will go 357# to utc-04:00 until the second Saturday in October... 358# 359# The press release is at 360# <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 361# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 362# </a> 363# (I couldn't find the decree, but 364# <a href="http://www.sanluis.gov.ar"> 365# www.sanluis.gov.ar 366# <a/> 367# is the official page for the Province Government). 368# 369# There's also a note in only one of the major national papers (La Naci�n) at 370# <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912"> 371# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 372# </a> 373# 374# The press release says: 375# (...) anunci� que el pr�ximo domingo a las 00:00 los puntanos deber�n 376# atrasar una hora sus relojes. 377# 378# A partir de entonces, San Luis establecer� el huso horario propio de 379# la Provincia. De esta manera, durante el periodo del calendario anual 380# 2009, el cambio horario quedar� comprendido entre las 00:00 del tercer 381# domingo de marzo y las 24:00 del segundo s�bado de octubre. 382# Quick&dirty translation 383# (...) announced that next Sunday, at 00:00, Puntanos (the San Luis 384# inhabitants) will have to turn back one hour their clocks 385# 386# Since then, San Luis will establish its own Province timezone. Thus, 387# during 2009, this timezone change will run from 00:00 the third Sunday 388# in March until 24:00 of the second Saturday in October. 389 390# From Arthur David Olson (2009-03-16): 391# The unofficial claim at 392# <a href="http://www.timeanddate.com/news/time/san-luis-new-time-zone.html"> 393# http://www.timeanddate.com/news/time/san-luis-new-time-zone.html 394# </a> 395# is that "The province will most likely follow the next daylight saving schedule, 396# which is planned for the second Sunday in October." 397 398# 399# Zone NAME GMTOFF RULES FORMAT [UNTIL] 400# 401# Buenos Aires (BA), Capital Federal (CF), 402Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 403 -4:16:48 - CMT 1920 May # Cordoba Mean Time 404 -4:00 - ART 1930 Dec 405 -4:00 Arg AR%sT 1969 Oct 5 406 -3:00 Arg AR%sT 1999 Oct 3 407 -4:00 Arg AR%sT 2000 Mar 3 408 -3:00 Arg AR%sT 409# 410# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 411# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 412# 413# Shanks & Pottenger also make the following claims, which we haven't verified: 414# - Formosa switched to -3:00 on 1991-01-07. 415# - Misiones switched to -3:00 on 1990-12-29. 416# - Chaco switched to -3:00 on 1991-01-04. 417# - Santiago del Estero switched to -4:00 on 1991-04-01, 418# then to -3:00 on 1991-04-26. 419# 420Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 421 -4:16:48 - CMT 1920 May 422 -4:00 - ART 1930 Dec 423 -4:00 Arg AR%sT 1969 Oct 5 424 -3:00 Arg AR%sT 1991 Mar 3 425 -4:00 - WART 1991 Oct 20 426 -3:00 Arg AR%sT 1999 Oct 3 427 -4:00 Arg AR%sT 2000 Mar 3 428 -3:00 Arg AR%sT 429# 430# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 431Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 432 -4:16:48 - CMT 1920 May 433 -4:00 - ART 1930 Dec 434 -4:00 Arg AR%sT 1969 Oct 5 435 -3:00 Arg AR%sT 1991 Mar 3 436 -4:00 - WART 1991 Oct 20 437 -3:00 Arg AR%sT 1999 Oct 3 438 -4:00 Arg AR%sT 2000 Mar 3 439 -3:00 Arg AR%sT 2008 Oct 18 440 -3:00 - ART 441# 442# Tucuman (TM) 443Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 444 -4:16:48 - CMT 1920 May 445 -4:00 - ART 1930 Dec 446 -4:00 Arg AR%sT 1969 Oct 5 447 -3:00 Arg AR%sT 1991 Mar 3 448 -4:00 - WART 1991 Oct 20 449 -3:00 Arg AR%sT 1999 Oct 3 450 -4:00 Arg AR%sT 2000 Mar 3 451 -3:00 - ART 2004 Jun 1 452 -4:00 - WART 2004 Jun 13 453 -3:00 Arg AR%sT 454# 455# La Rioja (LR) 456Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 457 -4:16:48 - CMT 1920 May 458 -4:00 - ART 1930 Dec 459 -4:00 Arg AR%sT 1969 Oct 5 460 -3:00 Arg AR%sT 1991 Mar 1 461 -4:00 - WART 1991 May 7 462 -3:00 Arg AR%sT 1999 Oct 3 463 -4:00 Arg AR%sT 2000 Mar 3 464 -3:00 - ART 2004 Jun 1 465 -4:00 - WART 2004 Jun 20 466 -3:00 Arg AR%sT 2008 Oct 18 467 -3:00 - ART 468# 469# San Juan (SJ) 470Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 471 -4:16:48 - CMT 1920 May 472 -4:00 - ART 1930 Dec 473 -4:00 Arg AR%sT 1969 Oct 5 474 -3:00 Arg AR%sT 1991 Mar 1 475 -4:00 - WART 1991 May 7 476 -3:00 Arg AR%sT 1999 Oct 3 477 -4:00 Arg AR%sT 2000 Mar 3 478 -3:00 - ART 2004 May 31 479 -4:00 - WART 2004 Jul 25 480 -3:00 Arg AR%sT 2008 Oct 18 481 -3:00 - ART 482# 483# Jujuy (JY) 484Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 485 -4:16:48 - CMT 1920 May 486 -4:00 - ART 1930 Dec 487 -4:00 Arg AR%sT 1969 Oct 5 488 -3:00 Arg AR%sT 1990 Mar 4 489 -4:00 - WART 1990 Oct 28 490 -4:00 1:00 WARST 1991 Mar 17 491 -4:00 - WART 1991 Oct 6 492 -3:00 1:00 ARST 1992 493 -3:00 Arg AR%sT 1999 Oct 3 494 -4:00 Arg AR%sT 2000 Mar 3 495 -3:00 Arg AR%sT 2008 Oct 18 496 -3:00 - ART 497# 498# Catamarca (CT), Chubut (CH) 499Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 500 -4:16:48 - CMT 1920 May 501 -4:00 - ART 1930 Dec 502 -4:00 Arg AR%sT 1969 Oct 5 503 -3:00 Arg AR%sT 1991 Mar 3 504 -4:00 - WART 1991 Oct 20 505 -3:00 Arg AR%sT 1999 Oct 3 506 -4:00 Arg AR%sT 2000 Mar 3 507 -3:00 - ART 2004 Jun 1 508 -4:00 - WART 2004 Jun 20 509 -3:00 Arg AR%sT 2008 Oct 18 510 -3:00 - ART 511# 512# Mendoza (MZ) 513Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 514 -4:16:48 - CMT 1920 May 515 -4:00 - ART 1930 Dec 516 -4:00 Arg AR%sT 1969 Oct 5 517 -3:00 Arg AR%sT 1990 Mar 4 518 -4:00 - WART 1990 Oct 15 519 -4:00 1:00 WARST 1991 Mar 1 520 -4:00 - WART 1991 Oct 15 521 -4:00 1:00 WARST 1992 Mar 1 522 -4:00 - WART 1992 Oct 18 523 -3:00 Arg AR%sT 1999 Oct 3 524 -4:00 Arg AR%sT 2000 Mar 3 525 -3:00 - ART 2004 May 23 526 -4:00 - WART 2004 Sep 26 527 -3:00 Arg AR%sT 2008 Oct 18 528 -3:00 - ART 529# 530# San Luis (SL) 531Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 532 -4:16:48 - CMT 1920 May 533 -4:00 - ART 1930 Dec 534 -4:00 Arg AR%sT 1969 Oct 5 535 -3:00 Arg AR%sT 1990 536 -3:00 1:00 ARST 1990 Mar 14 537 -4:00 - WART 1990 Oct 15 538 -4:00 1:00 WARST 1991 Mar 1 539 -4:00 - WART 1991 Jun 1 540 -3:00 - ART 1999 Oct 3 541 -4:00 1:00 WARST 2000 Mar 3 542 -3:00 - ART 2004 May 31 543 -4:00 - WART 2004 Jul 25 544 -3:00 Arg AR%sT 2008 Jan 21 545 -3:00 - ART 2009 Mar 15 546 -4:00 Arg WAR%sT 547# 548# Santa Cruz (SC) 549Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 550 -4:16:48 - CMT 1920 May # Cordoba Mean Time 551 -4:00 - ART 1930 Dec 552 -4:00 Arg AR%sT 1969 Oct 5 553 -3:00 Arg AR%sT 1999 Oct 3 554 -4:00 Arg AR%sT 2000 Mar 3 555 -3:00 - ART 2004 Jun 1 556 -4:00 - WART 2004 Jun 20 557 -3:00 Arg AR%sT 2008 Oct 18 558 -3:00 - ART 559# 560# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 561Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 562 -4:16:48 - CMT 1920 May # Cordoba Mean Time 563 -4:00 - ART 1930 Dec 564 -4:00 Arg AR%sT 1969 Oct 5 565 -3:00 Arg AR%sT 1999 Oct 3 566 -4:00 Arg AR%sT 2000 Mar 3 567 -3:00 - ART 2004 May 30 568 -4:00 - WART 2004 Jun 20 569 -3:00 Arg AR%sT 2008 Oct 18 570 -3:00 - ART 571 572# Aruba 573# Zone NAME GMTOFF RULES FORMAT [UNTIL] 574Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 575 -4:30 - ANT 1965 # Netherlands Antilles Time 576 -4:00 - AST 577 578# Bolivia 579# Zone NAME GMTOFF RULES FORMAT [UNTIL] 580Zone America/La_Paz -4:32:36 - LMT 1890 581 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 582 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 583 -4:00 - BOT # Bolivia Time 584 585# Brazil 586 587# From Paul Eggert (1993-11-18): 588# The mayor of Rio recently attempted to change the time zone rules 589# just in his city, in order to leave more summer time for the tourist trade. 590# The rule change lasted only part of the day; 591# the federal government refused to follow the city's rules, and business 592# was in a chaos, so the mayor backed down that afternoon. 593 594# From IATA SSIM (1996-02): 595# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 596# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 597# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 598# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 599# [The last three states are new to this issue of the IATA SSIM.] 600 601# From Gwillim Law (1996-10-07): 602# Geography, history (Tocantins was part of Goias until 1989), and other 603# sources of time zone information lead me to believe that AL, SE, and TO were 604# always in BR1, and so the only change was whether or not they observed DST.... 605# The earliest issue of the SSIM I have is 2/91. Each issue from then until 606# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 607# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 608# (UTC-4).... The other two time zones given for Brazil are BR3, which is 609# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 610# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 611# become part of the state of Pernambuco). The boundary between BR1 and BR2 612# has never been clearly stated. They've simply been called East and West. 613# However, some conclusions can be drawn from another IATA manual: the Airline 614# Coding Directory, which lists close to 400 airports in Brazil. For each 615# airport it gives a time zone which is coded to the SSIM. From that 616# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 617# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 618# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 619 620# From Marcos Tadeu (1998-09-27): 621# <a href="http://pcdsh01.on.br/verao1.html"> 622# Brazilian official page 623# </a> 624 625# From Jesper Norgaard (2000-11-03): 626# [For an official list of which regions in Brazil use which time zones, see:] 627# http://pcdsh01.on.br/Fusbr.htm 628# http://pcdsh01.on.br/Fusbrhv.htm 629 630# From Celso Doria via David Madeo (2002-10-09): 631# The reason for the delay this year has to do with elections in Brazil. 632# 633# Unlike in the United States, elections in Brazil are 100% computerized and 634# the results are known almost immediately. Yesterday, it was the first 635# round of the elections when 115 million Brazilians voted for President, 636# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 637# counting (or re-counting) votes anymore and we know there will be a second 638# round for the Presidency and also for some Governors. The 2nd round will 639# take place on October 27th. 640# 641# The reason why the DST will only begin November 3rd is that the thousands 642# of electoral machines used cannot have their time changed, and since the 643# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 644# the Government decided to postpone DST, instead of changing the Constitution 645# (maybe, for the next elections, it will be possible to change the clock)... 646 647# From Rodrigo Severo (2004-10-04): 648# It's just the biannual change made necessary by the much hyped, supposedly 649# modern Brazilian eletronic voting machines which, apparently, can't deal 650# with a time change between the first and the second rounds of the elections. 651 652# From Steffen Thorsen (2007-09-20): 653# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 654# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 655 656# From Paul Schulze (2008-06-24): 657# ...by law number 11.662 of April 24, 2008 (published in the "Diario 658# Oficial da Uniao"...) in Brazil there are changes in the timezones, 659# effective today (00:00am at June 24, 2008) as follows: 660# 661# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 662# part of the Amazonas state that had this timezone now being put to the 663# timezone UTC+4 664# b) The whole Para state now is put at timezone UTC+3, instead of just 665# part of it, as was before. 666# 667# This change follows a proposal of senator Tiao Viana of Acre state, that 668# proposed it due to concerns about open television channels displaying 669# programs inappropriate to youths in the states that had the timezone 670# UTC+5 too early in the night. In the occasion, some more corrections 671# were proposed, trying to unify the timezones of any given state. This 672# change modifies timezone rules defined in decree 2.784 of 18 June, 673# 1913. 674 675# From Rodrigo Severo (2008-06-24): 676# Just correcting the URL: 677# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008"> 678# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008 679# </a> 680# 681# As a result of the above Decree I believe the America/Rio_Branco 682# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 683# be created to represent the the west side of the Para State. I 684# suggest this new timezone be called Santarem as the most 685# important/populated city in the affected area. 686# 687# This new timezone would be the same as the Rio_Branco timezone up to 688# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 689 690# From Alex Krivenyshev (2008-06-24): 691# This is a quick reference page for New and Old Brazil Time Zones map. 692# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 693# http://www.worldtimezone.com/brazil-time-new-old.php 694# </a> 695# 696# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 697# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 698# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 699 700# From Paul Eggert (2002-10-10): 701# The official decrees referenced below are mostly taken from 702# <a href="http://pcdsh01.on.br/DecHV.html"> 703# Decretos sobre o Horario de Verao no Brasil 704# </a>. 705 706# From Steffen Thorsen (2008-08-29): 707# As announced by the government and many newspapers in Brazil late 708# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 709# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 710# past years experience with the elections, there was a good chance that 711# the start was postponed to November, but it did not happen this year. 712# 713# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 714# 715# An official page about it: 716# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 717# http://www.mme.gov.br/site/news/detail.do?newsId=16722 718# </a> 719# Note that this link does not always work directly, but must be accessed 720# by going to 721# <a href="http://www.mme.gov.br/first"> 722# http://www.mme.gov.br/first 723# </a> 724# 725# One example link that works directly: 726# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 727# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 728# (Portuguese) 729# </a> 730# 731# We have a written a short article about it as well: 732# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 733# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 734# </a> 735 736# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 737# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 738# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 739Rule Brazil 1931 only - Oct 3 11:00 1:00 S 740Rule Brazil 1932 1933 - Apr 1 0:00 0 - 741Rule Brazil 1932 only - Oct 3 0:00 1:00 S 742# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 743# revoked DST. 744# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 745# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 746Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 747Rule Brazil 1950 only - Apr 16 1:00 0 - 748Rule Brazil 1951 1952 - Apr 1 0:00 0 - 749# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 750Rule Brazil 1953 only - Mar 1 0:00 0 - 751# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 752# revoked DST. 753# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 754# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 755# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 756# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 757# extended the above decree to all of the national territory on 12-09. 758Rule Brazil 1963 only - Dec 9 0:00 1:00 S 759# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 760# extended summer time by one day to 1964-03-01 00:00 (start of school). 761Rule Brazil 1964 only - Mar 1 0:00 0 - 762# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 763Rule Brazil 1965 only - Jan 31 0:00 1:00 S 764Rule Brazil 1965 only - Mar 31 0:00 0 - 765# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 766Rule Brazil 1965 only - Dec 1 0:00 1:00 S 767# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 768Rule Brazil 1966 1968 - Mar 1 0:00 0 - 769Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 770# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 771# revoked DST. 772# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 773Rule Brazil 1985 only - Nov 2 0:00 1:00 S 774# Decree 92,310 (1986-01-21) 775# Decree 92,463 (1986-03-13) 776Rule Brazil 1986 only - Mar 15 0:00 0 - 777# Decree 93,316 (1986-10-01) 778Rule Brazil 1986 only - Oct 25 0:00 1:00 S 779Rule Brazil 1987 only - Feb 14 0:00 0 - 780# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 781Rule Brazil 1987 only - Oct 25 0:00 1:00 S 782Rule Brazil 1988 only - Feb 7 0:00 0 - 783# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 784# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 785Rule Brazil 1988 only - Oct 16 0:00 1:00 S 786Rule Brazil 1989 only - Jan 29 0:00 0 - 787# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 788# with the same exceptions 789Rule Brazil 1989 only - Oct 15 0:00 1:00 S 790Rule Brazil 1990 only - Feb 11 0:00 0 - 791# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 792# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 793# Decree 99,629 (1990-10-19) adds BA, MT. 794Rule Brazil 1990 only - Oct 21 0:00 1:00 S 795Rule Brazil 1991 only - Feb 17 0:00 0 - 796# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 797# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 798Rule Brazil 1991 only - Oct 20 0:00 1:00 S 799Rule Brazil 1992 only - Feb 9 0:00 0 - 800# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 801# adopted by same states. 802Rule Brazil 1992 only - Oct 25 0:00 1:00 S 803Rule Brazil 1993 only - Jan 31 0:00 0 - 804# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 805# adopted by same states, plus AM. 806# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 807# web page corrected 2004-01-07) adopted by same states, minus AM. 808# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 809# adopted by same states, plus MT and TO. 810# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 811# adds AL, SE. 812Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 813Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 814Rule Brazil 1996 only - Feb 11 0:00 0 - 815# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 816# adopted by same states, minus AL, SE. 817Rule Brazil 1996 only - Oct 6 0:00 1:00 S 818Rule Brazil 1997 only - Feb 16 0:00 0 - 819# From Daniel C. Sobral (1998-02-12): 820# In 1997, the DS began on October 6. The stated reason was that 821# because international television networks ignored Brazil's policy on DS, 822# they bought the wrong times on satellite for coverage of Pope's visit. 823# This year, the ending date of DS was postponed to March 1 824# to help dealing with the shortages of electric power. 825# 826# Decree 2,317 (1997-09-04), adopted by same states. 827Rule Brazil 1997 only - Oct 6 0:00 1:00 S 828# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 829# (1998-02-10) 830Rule Brazil 1998 only - Mar 1 0:00 0 - 831# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 832# adopted by the same states as before. 833Rule Brazil 1998 only - Oct 11 0:00 1:00 S 834Rule Brazil 1999 only - Feb 21 0:00 0 - 835# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 836# (1999-08-23) adopted by same states. 837# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 838# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 839Rule Brazil 1999 only - Oct 3 0:00 1:00 S 840Rule Brazil 2000 only - Feb 27 0:00 0 - 841# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 842# adopted by the same states as before. 843# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 844# repeals DST in PE and RR, effective 2000-10-15 00:00. 845# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 846# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 847# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 848# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 849Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 850Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 851# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 852# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 853Rule Brazil 2002 only - Nov 3 0:00 1:00 S 854# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 855# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 856Rule Brazil 2003 only - Oct 19 0:00 1:00 S 857# Decree 5,223 (2004-10-01) reestablishes DST in MT. 858# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 859Rule Brazil 2004 only - Nov 2 0:00 1:00 S 860# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 861# adopted by the same states as before. 862Rule Brazil 2005 only - Oct 16 0:00 1:00 S 863# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 864# adopted by the same states as before. 865Rule Brazil 2006 only - Nov 5 0:00 1:00 S 866Rule Brazil 2007 only - Feb 25 0:00 0 - 867# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 868# adopted by the same states as before. 869Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 870# From Frederico A. C. Neves (2008-09-10): 871# Acording to this decree 872# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 873# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 874# </a> 875# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 876# 3rd Feb Sunday. There is an exception on the return date when this is 877# the Carnival Sunday then the return date will be the next Sunday... 878Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 879Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 880Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 881Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 882Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 883Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 884Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 885Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 886Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 887Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 888Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 889Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 890Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 891# From Arthur David Olson (2008-09-29): 892# The next is wrong in some years but is better than nothing. 893Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 894 895# The latest ruleset listed above says that the following states observe DST: 896# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 897 898# Zone NAME GMTOFF RULES FORMAT [UNTIL] 899# 900# Fernando de Noronha (administratively part of PE) 901Zone America/Noronha -2:09:40 - LMT 1914 902 -2:00 Brazil FN%sT 1990 Sep 17 903 -2:00 - FNT 1999 Sep 30 904 -2:00 Brazil FN%sT 2000 Oct 15 905 -2:00 - FNT 2001 Sep 13 906 -2:00 Brazil FN%sT 2002 Oct 1 907 -2:00 - FNT 908# Other Atlantic islands have no permanent settlement. 909# These include Trindade and Martin Vaz (administratively part of ES), 910# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 911# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 912# it also included the Penedos. 913# 914# Amapa (AP), east Para (PA) 915# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 916# The division between east and west Para is the river Xingu. 917# In the north a very small part from the river Javary (now Jari I guess, 918# the border with Amapa) to the Amazon, then to the Xingu. 919Zone America/Belem -3:13:56 - LMT 1914 920 -3:00 Brazil BR%sT 1988 Sep 12 921 -3:00 - BRT 922# 923# west Para (PA) 924# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 925Zone America/Santarem -3:38:48 - LMT 1914 926 -4:00 Brazil AM%sT 1988 Sep 12 927 -4:00 - AMT 2008 Jun 24 00:00 928 -3:00 - BRT 929# 930# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 931# Paraiba (PB) 932Zone America/Fortaleza -2:34:00 - LMT 1914 933 -3:00 Brazil BR%sT 1990 Sep 17 934 -3:00 - BRT 1999 Sep 30 935 -3:00 Brazil BR%sT 2000 Oct 22 936 -3:00 - BRT 2001 Sep 13 937 -3:00 Brazil BR%sT 2002 Oct 1 938 -3:00 - BRT 939# 940# Pernambuco (PE) (except Atlantic islands) 941Zone America/Recife -2:19:36 - LMT 1914 942 -3:00 Brazil BR%sT 1990 Sep 17 943 -3:00 - BRT 1999 Sep 30 944 -3:00 Brazil BR%sT 2000 Oct 15 945 -3:00 - BRT 2001 Sep 13 946 -3:00 Brazil BR%sT 2002 Oct 1 947 -3:00 - BRT 948# 949# Tocantins (TO) 950Zone America/Araguaina -3:12:48 - LMT 1914 951 -3:00 Brazil BR%sT 1990 Sep 17 952 -3:00 - BRT 1995 Sep 14 953 -3:00 Brazil BR%sT 2003 Sep 24 954 -3:00 - BRT 955# 956# Alagoas (AL), Sergipe (SE) 957Zone America/Maceio -2:22:52 - LMT 1914 958 -3:00 Brazil BR%sT 1990 Sep 17 959 -3:00 - BRT 1995 Oct 13 960 -3:00 Brazil BR%sT 1996 Sep 4 961 -3:00 - BRT 1999 Sep 30 962 -3:00 Brazil BR%sT 2000 Oct 22 963 -3:00 - BRT 2001 Sep 13 964 -3:00 Brazil BR%sT 2002 Oct 1 965 -3:00 - BRT 966# 967# Bahia (BA) 968# There are too many Salvadors elsewhere, so use America/Bahia instead 969# of America/Salvador. 970Zone America/Bahia -2:34:04 - LMT 1914 971 -3:00 Brazil BR%sT 2003 Sep 24 972 -3:00 - BRT 973# 974# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 975# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 976# Santa Catarina (SC), Rio Grande do Sul (RS) 977Zone America/Sao_Paulo -3:06:28 - LMT 1914 978 -3:00 Brazil BR%sT 1963 Oct 23 00:00 979 -3:00 1:00 BRST 1964 980 -3:00 Brazil BR%sT 981# 982# Mato Grosso do Sul (MS) 983Zone America/Campo_Grande -3:38:28 - LMT 1914 984 -4:00 Brazil AM%sT 985# 986# Mato Grosso (MT) 987Zone America/Cuiaba -3:44:20 - LMT 1914 988 -4:00 Brazil AM%sT 2003 Sep 24 989 -4:00 - AMT 2004 Oct 1 990 -4:00 Brazil AM%sT 991# 992# Rondonia (RO) 993Zone America/Porto_Velho -4:15:36 - LMT 1914 994 -4:00 Brazil AM%sT 1988 Sep 12 995 -4:00 - AMT 996# 997# Roraima (RR) 998Zone America/Boa_Vista -4:02:40 - LMT 1914 999 -4:00 Brazil AM%sT 1988 Sep 12 1000 -4:00 - AMT 1999 Sep 30 1001 -4:00 Brazil AM%sT 2000 Oct 15 1002 -4:00 - AMT 1003# 1004# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1005# The great circle line from Tabatinga to Porto Acre divides 1006# east from west Amazonas. 1007Zone America/Manaus -4:00:04 - LMT 1914 1008 -4:00 Brazil AM%sT 1988 Sep 12 1009 -4:00 - AMT 1993 Sep 28 1010 -4:00 Brazil AM%sT 1994 Sep 22 1011 -4:00 - AMT 1012# 1013# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1014# Eirunepe, Envira, Ipixuna 1015Zone America/Eirunepe -4:39:28 - LMT 1914 1016 -5:00 Brazil AC%sT 1988 Sep 12 1017 -5:00 - ACT 1993 Sep 28 1018 -5:00 Brazil AC%sT 1994 Sep 22 1019 -5:00 - ACT 2008 Jun 24 00:00 1020 -4:00 - AMT 1021# 1022# Acre (AC) 1023Zone America/Rio_Branco -4:31:12 - LMT 1914 1024 -5:00 Brazil AC%sT 1988 Sep 12 1025 -5:00 - ACT 2008 Jun 24 00:00 1026 -4:00 - AMT 1027 1028# Chile 1029 1030# From Eduardo Krell (1995-10-19): 1031# The law says to switch to DST at midnight [24:00] on the second SATURDAY 1032# of October.... The law is the same for March and October. 1033# (1998-09-29): 1034# Because of the drought this year, the government decided to go into 1035# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1036# (unless there's another dry season next year, I guess). 1037 1038# From Julio I. Pacheco Troncoso (1999-03-18): 1039# Because of the same drought, the government decided to end DST later, 1040# on April 3, (one-time change). 1041 1042# From Oscar van Vlijmen (2006-10-08): 1043# http://www.horaoficial.cl/cambio.htm 1044 1045# From Jesper Norgaard Welen (2006-10-08): 1046# I think that there are some obvious mistakes in the suggested link 1047# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1048# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1049# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1050# anyhow it clears up some doubts too. 1051 1052# From Paul Eggert (2006-12-27): 1053# The following data for Chile and America/Santiago are from 1054# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1055# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1056# & Pottenger, except with DST transitions after 1932 cloned from 1057# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1058# but we have no other source. 1059 1060# From German Poo-Caaman~o (2008-03-03): 1061# Due to drought, Chile extends Daylight Time in three weeks. This 1062# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1063# and Saturday 3/29 at 22:00 for Pacific/Easter) 1064# The Supreme Decree is located at 1065# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1066# http://www.shoa.cl/servicios/supremo316.pdf 1067# </a> 1068# and the instructions for 2008 are located in: 1069# <a href="http://www.horaoficial.cl/cambio.htm"> 1070# http://www.horaoficial.cl/cambio.htm 1071# </a>. 1072 1073# From Jose Miguel Garrido (2008-03-05): 1074# ... 1075# You could see the announces of the change on 1076# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1077# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1078# </a>. 1079 1080# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1081Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1082Rule Chile 1928 1932 - Apr 1 0:00 0 - 1083Rule Chile 1942 only - Jun 1 4:00u 0 - 1084Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1085Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1086Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1087Rule Chile 1947 only - Apr 1 4:00u 0 - 1088Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1089Rule Chile 1969 only - Mar 30 3:00u 0 - 1090Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1091Rule Chile 1970 only - Mar 29 3:00u 0 - 1092Rule Chile 1971 only - Mar 14 3:00u 0 - 1093Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1094Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1095Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1096Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1097Rule Chile 1987 only - Apr 12 3:00u 0 - 1098Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1099Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1100Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1101Rule Chile 1990 only - Mar 18 3:00u 0 - 1102Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1103Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1104Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1105Rule Chile 1997 only - Mar 30 3:00u 0 - 1106Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1107Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1108Rule Chile 1999 only - Apr 4 3:00u 0 - 1109Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 1110Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1111# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1112# which is used below in specifying the transition. 1113Rule Chile 2008 only - Mar 30 3:00u 0 - 1114Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - 1115# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1116# (1996-09) says 1998-03-08. Ignore these. 1117# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1118Zone America/Santiago -4:42:46 - LMT 1890 1119 -4:42:46 - SMT 1910 # Santiago Mean Time 1120 -5:00 - CLT 1916 Jul 1 # Chile Time 1121 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1122 -4:00 - CLT 1919 Jul 1 # Chile Time 1123 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1124 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1125 -4:00 Chile CL%sT 1126Zone Pacific/Easter -7:17:44 - LMT 1890 1127 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1128 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1129 -6:00 Chile EAS%sT 1130# 1131# Sala y Gomez Island is like Pacific/Easter. 1132# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1133# San Felix, and Antarctic bases, are like America/Santiago. 1134 1135# Colombia 1136# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1137Rule CO 1992 only - May 3 0:00 1:00 S 1138Rule CO 1993 only - Apr 4 0:00 0 - 1139# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1140Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1141 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1142 -5:00 CO CO%sT # Colombia Time 1143# Malpelo, Providencia, San Andres 1144# no information; probably like America/Bogota 1145 1146# Curacao 1147# 1148# From Paul Eggert (2006-03-22): 1149# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1150# -4:00 since standard time was introduced on 1912-03-02; and that 1151# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1152# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1153# Saba Island has been like Curacao. 1154# This all predates our 1970 cutoff, though. 1155# 1156# By July 2007 Curacao and St Maarten are planned to become 1157# associated states within the Netherlands, much like Aruba; 1158# Bonaire, Saba and St Eustatius would become directly part of the 1159# Netherlands as Kingdom Islands. This won't affect their time zones 1160# though, as far as we know. 1161# 1162# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1163Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1164 -4:30 - ANT 1965 # Netherlands Antilles Time 1165 -4:00 - AST 1166 1167# Ecuador 1168# 1169# From Paul Eggert (2007-03-04): 1170# Apparently Ecuador had a failed experiment with DST in 1992. 1171# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1172# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1173# talk about "hora Sixto". Leave this alone for now, as we have no data. 1174# 1175# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1176Zone America/Guayaquil -5:19:20 - LMT 1890 1177 -5:14:00 - QMT 1931 # Quito Mean Time 1178 -5:00 - ECT # Ecuador Time 1179Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1180 -5:00 - ECT 1986 1181 -6:00 - GALT # Galapagos Time 1182 1183# Falklands 1184 1185# From Paul Eggert (2006-03-22): 1186# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1187# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1188 1189# From Falkland Islands Government Office, London (2001-01-22) 1190# via Jesper Norgaard: 1191# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1192# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1193# September. It is anticipated that the clocks will revert back at 2 1194# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1195# Sunday 1 September. 1196 1197# From Rives McDow (2001-02-13): 1198# 1199# I have communicated several times with people there, and the last 1200# time I had communications that was helpful was in 1998. Here is 1201# what was said then: 1202# 1203# "The general rule was that Stanley used daylight saving and the Camp 1204# did not. However for various reasons many people in the Camp have 1205# started to use daylight saving (known locally as 'Stanley Time') 1206# There is no rule as to who uses daylight saving - it is a matter of 1207# personal choice and so it is impossible to draw a map showing who 1208# uses it and who does not. Any list would be out of date as soon as 1209# it was produced. This year daylight saving ended on April 18/19th 1210# and started again on September 12/13th. I do not know what the rule 1211# is, but can find out if you like. We do not change at the same time 1212# as UK or Chile." 1213# 1214# I did have in my notes that the rule was "Second Saturday in Sep at 1215# 0:00 until third Saturday in Apr at 0:00". I think that this does 1216# not agree in some cases with Shanks; is this true? 1217# 1218# Also, there is no mention in the list that some areas in the 1219# Falklands do not use DST. I have found in my communications there 1220# that these areas are on the western half of East Falkland and all of 1221# West Falkland. Stanley is the only place that consistently observes 1222# DST. Again, as in other places in the world, the farmers don't like 1223# it. West Falkland is almost entirely sheep farmers. 1224# 1225# I know one lady there that keeps a list of which farm keeps DST and 1226# which doesn't each year. She runs a shop in Stanley, and says that 1227# the list changes each year. She uses it to communicate to her 1228# customers, catching them when they are home for lunch or dinner. 1229 1230# From Paul Eggert (2001-03-05): 1231# For now, we'll just record the time in Stanley, since we have no 1232# better info. 1233 1234# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1235Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1236Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1237Rule Falk 1939 only - Oct 1 0:00 1:00 S 1238Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1239Rule Falk 1943 only - Jan 1 0:00 0 - 1240Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1241Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1242Rule Falk 1984 only - Sep 16 0:00 1:00 S 1243Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1244Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1245Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1246Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1247# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1248Zone Atlantic/Stanley -3:51:24 - LMT 1890 1249 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1250 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1251 -3:00 Falk FK%sT 1985 Sep 15 1252 -4:00 Falk FK%sT 1253 1254# French Guiana 1255# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1256Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1257 -4:00 - GFT 1967 Oct # French Guiana Time 1258 -3:00 - GFT 1259 1260# Guyana 1261# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1262Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1263 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1264 -3:45 - GYT 1975 Jul 31 # Guyana Time 1265 -3:00 - GYT 1991 1266# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1267 -4:00 - GYT 1268 1269# Paraguay 1270# From Paul Eggert (2006-03-22): 1271# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1272# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1273# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1274# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1275Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1276Rule Para 1975 1978 - Mar 1 0:00 0 - 1277Rule Para 1979 1991 - Apr 1 0:00 0 - 1278Rule Para 1989 only - Oct 22 0:00 1:00 S 1279Rule Para 1990 only - Oct 1 0:00 1:00 S 1280Rule Para 1991 only - Oct 6 0:00 1:00 S 1281Rule Para 1992 only - Mar 1 0:00 0 - 1282Rule Para 1992 only - Oct 5 0:00 1:00 S 1283Rule Para 1993 only - Mar 31 0:00 0 - 1284Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1285Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1286Rule Para 1996 only - Mar 1 0:00 0 - 1287# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1288# From Steffen Thorsen (2000-10-02): 1289# I have three independent reports that Paraguay changed to DST this Sunday 1290# (10-01). 1291# 1292# Translated by Gwillim Law (2001-02-27) from 1293# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1294# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1295# </a>: 1296# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1297# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1298# system has been operating for several years. Formerly there was a separate 1299# decree each year; the new law has the same effect, but permanently. Every 1300# year, the time will change on the first Sunday of October; likewise, the 1301# clock will be set back on the first Sunday of March. 1302# 1303Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1304# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1305Rule Para 1997 only - Feb lastSun 0:00 0 - 1306# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1307# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1308Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1309# From Rives McDow (2002-02-28): 1310# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1311# dst method to be from the first Sunday in September to the first Sunday in 1312# April. 1313Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1314Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1315# 1316# From Jesper Norgaard Welen (2005-01-02): 1317# There are several sources that claim that Paraguay made 1318# a timezone rule change in autumn 2004. 1319# From Steffen Thorsen (2005-01-05): 1320# Decree 1,867 (2004-03-05) 1321# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1322# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1323Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1324Rule Para 2005 max - Mar Sun>=8 0:00 0 - 1325 1326# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1327Zone America/Asuncion -3:50:40 - LMT 1890 1328 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1329 -4:00 - PYT 1972 Oct # Paraguay Time 1330 -3:00 - PYT 1974 Apr 1331 -4:00 Para PY%sT 1332 1333# Peru 1334# 1335# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1336# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1337# When we were in Peru in 1985-1986, they apparently switched over 1338# sometime between December 29 and January 3 while we were on the Amazon. 1339# 1340# From Paul Eggert (2006-03-22): 1341# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1342 1343# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1344Rule Peru 1938 only - Jan 1 0:00 1:00 S 1345Rule Peru 1938 only - Apr 1 0:00 0 - 1346Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1347Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1348Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1349Rule Peru 1986 1987 - Apr 1 0:00 0 - 1350Rule Peru 1990 only - Jan 1 0:00 1:00 S 1351Rule Peru 1990 only - Apr 1 0:00 0 - 1352# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1353Rule Peru 1994 only - Jan 1 0:00 1:00 S 1354Rule Peru 1994 only - Apr 1 0:00 0 - 1355# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1356Zone America/Lima -5:08:12 - LMT 1890 1357 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1358 -5:00 Peru PE%sT # Peru Time 1359 1360# South Georgia 1361# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1362Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1363 -2:00 - GST # South Georgia Time 1364 1365# South Sandwich Is 1366# uninhabited; scientific personnel have wintered 1367 1368# Suriname 1369# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1370Zone America/Paramaribo -3:40:40 - LMT 1911 1371 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1372 -3:40:36 - PMT 1945 Oct # The capital moved? 1373 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1374 -3:30 - SRT 1984 Oct # Suriname Time 1375 -3:00 - SRT 1376 1377# Trinidad and Tobago 1378# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1379Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1380 -4:00 - AST 1381 1382# Uruguay 1383# From Paul Eggert (1993-11-18): 1384# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1385# From Shanks & Pottenger: 1386# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1387# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1388Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1389Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1390Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1391Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1392# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1393Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1394Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1395Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1396# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1397Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1398# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1399# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1400Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1401Rule Uruguay 1942 only - Jan 1 0:00 0 - 1402Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1403Rule Uruguay 1943 only - Mar 14 0:00 0 - 1404Rule Uruguay 1959 only - May 24 0:00 1:00 S 1405Rule Uruguay 1959 only - Nov 15 0:00 0 - 1406Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1407Rule Uruguay 1960 only - Mar 6 0:00 0 - 1408Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1409Rule Uruguay 1965 only - Sep 26 0:00 0 - 1410Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1411Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1412Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1413Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1414Rule Uruguay 1972 only - Aug 15 0:00 0 - 1415Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1416Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1417Rule Uruguay 1976 only - Oct 1 0:00 0 - 1418Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1419Rule Uruguay 1978 only - Apr 1 0:00 0 - 1420Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1421Rule Uruguay 1980 only - May 1 0:00 0 - 1422Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1423Rule Uruguay 1988 only - Mar 14 0:00 0 - 1424Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1425Rule Uruguay 1989 only - Mar 12 0:00 0 - 1426Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1427# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1428# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1429Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1430Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1431Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1432Rule Uruguay 1993 only - Feb 28 0:00 0 - 1433# From Eduardo Cota (2004-09-20): 1434# The uruguayan government has decreed a change in the local time.... 1435# http://www.presidencia.gub.uy/decretos/2004091502.htm 1436Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1437# From Steffen Thorsen (2005-03-11): 1438# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1439# save energy ... it was postponed two weeks.... 1440# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1441Rule Uruguay 2005 only - Mar 27 2:00 0 - 1442# From Eduardo Cota (2005-09-27): 1443# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1444# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1445# 02:00 local time, official time in Uruguay will be at GMT -2. 1446Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1447Rule Uruguay 2006 only - Mar 12 2:00 0 - 1448# From Jesper Norgaard Welen (2006-09-06): 1449# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1450Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1451Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1452# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1453Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1454 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1455 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1456 -3:00 Uruguay UY%sT 1457 1458# Venezuela 1459# 1460# From John Stainforth (2007-11-28): 1461# ... the change for Venezuela originally expected for 2007-12-31 has 1462# been brought forward to 2007-12-09. The official announcement was 1463# published today in the "Gaceta Oficial de la Republica Bolivariana 1464# de Venezuela, numero 38.819" (official document for all laws or 1465# resolution publication) 1466# http://www.globovision.com/news.php?nid=72208 1467 1468# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1469Zone America/Caracas -4:27:44 - LMT 1890 1470 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1471 -4:30 - VET 1965 # Venezuela Time 1472 -4:00 - VET 2007 Dec 9 03:00 1473 -4:30 - VET 1474
