1# @(#)southamerica 8.33 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# 355# Zone NAME GMTOFF RULES FORMAT [UNTIL] 356# 357# Buenos Aires (BA), Capital Federal (CF), 358Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 359 -4:16:48 - CMT 1920 May # Cordoba Mean Time 360 -4:00 - ART 1930 Dec 361 -4:00 Arg AR%sT 1969 Oct 5 362 -3:00 Arg AR%sT 1999 Oct 3 363 -4:00 Arg AR%sT 2000 Mar 3 364 -3:00 Arg AR%sT 365# 366# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 367# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 368# 369# Shanks & Pottenger also make the following claims, which we haven't verified: 370# - Formosa switched to -3:00 on 1991-01-07. 371# - Misiones switched to -3:00 on 1990-12-29. 372# - Chaco switched to -3:00 on 1991-01-04. 373# - Santiago del Estero switched to -4:00 on 1991-04-01, 374# then to -3:00 on 1991-04-26. 375# 376Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 377 -4:16:48 - CMT 1920 May 378 -4:00 - ART 1930 Dec 379 -4:00 Arg AR%sT 1969 Oct 5 380 -3:00 Arg AR%sT 1991 Mar 3 381 -4:00 - WART 1991 Oct 20 382 -3:00 Arg AR%sT 1999 Oct 3 383 -4:00 Arg AR%sT 2000 Mar 3 384 -3:00 Arg AR%sT 385# 386# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 387Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 388 -4:16:48 - CMT 1920 May 389 -4:00 - ART 1930 Dec 390 -4:00 Arg AR%sT 1969 Oct 5 391 -3:00 Arg AR%sT 1991 Mar 3 392 -4:00 - WART 1991 Oct 20 393 -3:00 Arg AR%sT 1999 Oct 3 394 -4:00 Arg AR%sT 2000 Mar 3 395 -3:00 Arg AR%sT 2008 Oct 18 396 -3:00 - ART 397# 398# Tucuman (TM) 399Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 400 -4:16:48 - CMT 1920 May 401 -4:00 - ART 1930 Dec 402 -4:00 Arg AR%sT 1969 Oct 5 403 -3:00 Arg AR%sT 1991 Mar 3 404 -4:00 - WART 1991 Oct 20 405 -3:00 Arg AR%sT 1999 Oct 3 406 -4:00 Arg AR%sT 2000 Mar 3 407 -3:00 - ART 2004 Jun 1 408 -4:00 - WART 2004 Jun 13 409 -3:00 Arg AR%sT 410# 411# La Rioja (LR) 412Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 413 -4:16:48 - CMT 1920 May 414 -4:00 - ART 1930 Dec 415 -4:00 Arg AR%sT 1969 Oct 5 416 -3:00 Arg AR%sT 1991 Mar 1 417 -4:00 - WART 1991 May 7 418 -3:00 Arg AR%sT 1999 Oct 3 419 -4:00 Arg AR%sT 2000 Mar 3 420 -3:00 - ART 2004 Jun 1 421 -4:00 - WART 2004 Jun 20 422 -3:00 Arg AR%sT 2008 Oct 18 423 -3:00 - ART 424# 425# San Juan (SJ) 426Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 427 -4:16:48 - CMT 1920 May 428 -4:00 - ART 1930 Dec 429 -4:00 Arg AR%sT 1969 Oct 5 430 -3:00 Arg AR%sT 1991 Mar 1 431 -4:00 - WART 1991 May 7 432 -3:00 Arg AR%sT 1999 Oct 3 433 -4:00 Arg AR%sT 2000 Mar 3 434 -3:00 - ART 2004 May 31 435 -4:00 - WART 2004 Jul 25 436 -3:00 Arg AR%sT 2008 Oct 18 437 -3:00 - ART 438# 439# Jujuy (JY) 440Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 441 -4:16:48 - CMT 1920 May 442 -4:00 - ART 1930 Dec 443 -4:00 Arg AR%sT 1969 Oct 5 444 -3:00 Arg AR%sT 1990 Mar 4 445 -4:00 - WART 1990 Oct 28 446 -4:00 1:00 WARST 1991 Mar 17 447 -4:00 - WART 1991 Oct 6 448 -3:00 1:00 ARST 1992 449 -3:00 Arg AR%sT 1999 Oct 3 450 -4:00 Arg AR%sT 2000 Mar 3 451 -3:00 Arg AR%sT 2008 Oct 18 452 -3:00 - ART 453# 454# Catamarca (CT), Chubut (CH) 455Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 456 -4:16:48 - CMT 1920 May 457 -4:00 - ART 1930 Dec 458 -4:00 Arg AR%sT 1969 Oct 5 459 -3:00 Arg AR%sT 1991 Mar 3 460 -4:00 - WART 1991 Oct 20 461 -3:00 Arg AR%sT 1999 Oct 3 462 -4:00 Arg AR%sT 2000 Mar 3 463 -3:00 - ART 2004 Jun 1 464 -4:00 - WART 2004 Jun 20 465 -3:00 Arg AR%sT 2008 Oct 18 466 -3:00 - ART 467# 468# Mendoza (MZ) 469Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 470 -4:16:48 - CMT 1920 May 471 -4:00 - ART 1930 Dec 472 -4:00 Arg AR%sT 1969 Oct 5 473 -3:00 Arg AR%sT 1990 Mar 4 474 -4:00 - WART 1990 Oct 15 475 -4:00 1:00 WARST 1991 Mar 1 476 -4:00 - WART 1991 Oct 15 477 -4:00 1:00 WARST 1992 Mar 1 478 -4:00 - WART 1992 Oct 18 479 -3:00 Arg AR%sT 1999 Oct 3 480 -4:00 Arg AR%sT 2000 Mar 3 481 -3:00 - ART 2004 May 23 482 -4:00 - WART 2004 Sep 26 483 -3:00 Arg AR%sT 2008 Oct 18 484 -3:00 - ART 485# 486# San Luis (SL) 487Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 488 -4:16:48 - CMT 1920 May 489 -4:00 - ART 1930 Dec 490 -4:00 Arg AR%sT 1969 Oct 5 491 -3:00 Arg AR%sT 1990 492 -3:00 1:00 ARST 1990 Mar 14 493 -4:00 - WART 1990 Oct 15 494 -4:00 1:00 WARST 1991 Mar 1 495 -4:00 - WART 1991 Jun 1 496 -3:00 - ART 1999 Oct 3 497 -4:00 1:00 WARST 2000 Mar 3 498 -3:00 - ART 2004 May 31 499 -4:00 - WART 2004 Jul 25 500 -3:00 Arg AR%sT 2008 Jan 21 501 -3:00 - ART 502# 503# Santa Cruz (SC) 504Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 505 -4:16:48 - CMT 1920 May # Cordoba Mean Time 506 -4:00 - ART 1930 Dec 507 -4:00 Arg AR%sT 1969 Oct 5 508 -3:00 Arg AR%sT 1999 Oct 3 509 -4:00 Arg AR%sT 2000 Mar 3 510 -3:00 - ART 2004 Jun 1 511 -4:00 - WART 2004 Jun 20 512 -3:00 Arg AR%sT 2008 Oct 18 513 -3:00 - ART 514# 515# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 516Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 517 -4:16:48 - CMT 1920 May # Cordoba Mean Time 518 -4:00 - ART 1930 Dec 519 -4:00 Arg AR%sT 1969 Oct 5 520 -3:00 Arg AR%sT 1999 Oct 3 521 -4:00 Arg AR%sT 2000 Mar 3 522 -3:00 - ART 2004 May 30 523 -4:00 - WART 2004 Jun 20 524 -3:00 Arg AR%sT 2008 Oct 18 525 -3:00 - ART 526 527# Aruba 528# Zone NAME GMTOFF RULES FORMAT [UNTIL] 529Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 530 -4:30 - ANT 1965 # Netherlands Antilles Time 531 -4:00 - AST 532 533# Bolivia 534# Zone NAME GMTOFF RULES FORMAT [UNTIL] 535Zone America/La_Paz -4:32:36 - LMT 1890 536 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 537 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 538 -4:00 - BOT # Bolivia Time 539 540# Brazil 541 542# From Paul Eggert (1993-11-18): 543# The mayor of Rio recently attempted to change the time zone rules 544# just in his city, in order to leave more summer time for the tourist trade. 545# The rule change lasted only part of the day; 546# the federal government refused to follow the city's rules, and business 547# was in a chaos, so the mayor backed down that afternoon. 548 549# From IATA SSIM (1996-02): 550# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 551# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 552# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 553# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 554# [The last three states are new to this issue of the IATA SSIM.] 555 556# From Gwillim Law (1996-10-07): 557# Geography, history (Tocantins was part of Goias until 1989), and other 558# sources of time zone information lead me to believe that AL, SE, and TO were 559# always in BR1, and so the only change was whether or not they observed DST.... 560# The earliest issue of the SSIM I have is 2/91. Each issue from then until 561# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 562# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 563# (UTC-4).... The other two time zones given for Brazil are BR3, which is 564# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 565# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 566# become part of the state of Pernambuco). The boundary between BR1 and BR2 567# has never been clearly stated. They've simply been called East and West. 568# However, some conclusions can be drawn from another IATA manual: the Airline 569# Coding Directory, which lists close to 400 airports in Brazil. For each 570# airport it gives a time zone which is coded to the SSIM. From that 571# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 572# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 573# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 574 575# From Marcos Tadeu (1998-09-27): 576# <a href="http://pcdsh01.on.br/verao1.html"> 577# Brazilian official page 578# </a> 579 580# From Jesper Norgaard (2000-11-03): 581# [For an official list of which regions in Brazil use which time zones, see:] 582# http://pcdsh01.on.br/Fusbr.htm 583# http://pcdsh01.on.br/Fusbrhv.htm 584 585# From Celso Doria via David Madeo (2002-10-09): 586# The reason for the delay this year has to do with elections in Brazil. 587# 588# Unlike in the United States, elections in Brazil are 100% computerized and 589# the results are known almost immediately. Yesterday, it was the first 590# round of the elections when 115 million Brazilians voted for President, 591# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 592# counting (or re-counting) votes anymore and we know there will be a second 593# round for the Presidency and also for some Governors. The 2nd round will 594# take place on October 27th. 595# 596# The reason why the DST will only begin November 3rd is that the thousands 597# of electoral machines used cannot have their time changed, and since the 598# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 599# the Government decided to postpone DST, instead of changing the Constitution 600# (maybe, for the next elections, it will be possible to change the clock)... 601 602# From Rodrigo Severo (2004-10-04): 603# It's just the biannual change made necessary by the much hyped, supposedly 604# modern Brazilian eletronic voting machines which, apparently, can't deal 605# with a time change between the first and the second rounds of the elections. 606 607# From Steffen Thorsen (2007-09-20): 608# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 609# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 610 611# From Paul Schulze (2008-06-24): 612# ...by law number 11.662 of April 24, 2008 (published in the "Diario 613# Oficial da Uniao"...) in Brazil there are changes in the timezones, 614# effective today (00:00am at June 24, 2008) as follows: 615# 616# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 617# part of the Amazonas state that had this timezone now being put to the 618# timezone UTC+4 619# b) The whole Para state now is put at timezone UTC+3, instead of just 620# part of it, as was before. 621# 622# This change follows a proposal of senator Tiao Viana of Acre state, that 623# proposed it due to concerns about open television channels displaying 624# programs inappropriate to youths in the states that had the timezone 625# UTC+5 too early in the night. In the occasion, some more corrections 626# were proposed, trying to unify the timezones of any given state. This 627# change modifies timezone rules defined in decree 2.784 of 18 June, 628# 1913. 629 630# From Rodrigo Severo (2008-06-24): 631# Just correcting the URL: 632# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008"> 633# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008 634# </a> 635# 636# As a result of the above Decree I believe the America/Rio_Branco 637# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 638# be created to represent the the west side of the Para State. I 639# suggest this new timezone be called Santarem as the most 640# important/populated city in the affected area. 641# 642# This new timezone would be the same as the Rio_Branco timezone up to 643# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 644 645# From Alex Krivenyshev (2008-06-24): 646# This is a quick reference page for New and Old Brazil Time Zones map. 647# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 648# http://www.worldtimezone.com/brazil-time-new-old.php 649# </a> 650# 651# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 652# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 653# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 654 655# From Paul Eggert (2002-10-10): 656# The official decrees referenced below are mostly taken from 657# <a href="http://pcdsh01.on.br/DecHV.html"> 658# Decretos sobre o Horario de Verao no Brasil 659# </a>. 660 661# From Steffen Thorsen (2008-08-29): 662# As announced by the government and many newspapers in Brazil late 663# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 664# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 665# past years experience with the elections, there was a good chance that 666# the start was postponed to November, but it did not happen this year. 667# 668# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 669# 670# An official page about it: 671# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 672# http://www.mme.gov.br/site/news/detail.do?newsId=16722 673# </a> 674# Note that this link does not always work directly, but must be accessed 675# by going to 676# <a href="http://www.mme.gov.br/first"> 677# http://www.mme.gov.br/first 678# </a> 679# 680# One example link that works directly: 681# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 682# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 683# (Portuguese) 684# </a> 685# 686# We have a written a short article about it as well: 687# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 688# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 689# </a> 690 691# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 692# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 693# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 694Rule Brazil 1931 only - Oct 3 11:00 1:00 S 695Rule Brazil 1932 1933 - Apr 1 0:00 0 - 696Rule Brazil 1932 only - Oct 3 0:00 1:00 S 697# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 698# revoked DST. 699# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 700# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 701Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 702Rule Brazil 1950 only - Apr 16 1:00 0 - 703Rule Brazil 1951 1952 - Apr 1 0:00 0 - 704# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 705Rule Brazil 1953 only - Mar 1 0:00 0 - 706# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 707# revoked DST. 708# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 709# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 710# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 711# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 712# extended the above decree to all of the national territory on 12-09. 713Rule Brazil 1963 only - Dec 9 0:00 1:00 S 714# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 715# extended summer time by one day to 1964-03-01 00:00 (start of school). 716Rule Brazil 1964 only - Mar 1 0:00 0 - 717# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 718Rule Brazil 1965 only - Jan 31 0:00 1:00 S 719Rule Brazil 1965 only - Mar 31 0:00 0 - 720# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 721Rule Brazil 1965 only - Dec 1 0:00 1:00 S 722# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 723Rule Brazil 1966 1968 - Mar 1 0:00 0 - 724Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 725# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 726# revoked DST. 727# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 728Rule Brazil 1985 only - Nov 2 0:00 1:00 S 729# Decree 92,310 (1986-01-21) 730# Decree 92,463 (1986-03-13) 731Rule Brazil 1986 only - Mar 15 0:00 0 - 732# Decree 93,316 (1986-10-01) 733Rule Brazil 1986 only - Oct 25 0:00 1:00 S 734Rule Brazil 1987 only - Feb 14 0:00 0 - 735# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 736Rule Brazil 1987 only - Oct 25 0:00 1:00 S 737Rule Brazil 1988 only - Feb 7 0:00 0 - 738# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 739# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 740Rule Brazil 1988 only - Oct 16 0:00 1:00 S 741Rule Brazil 1989 only - Jan 29 0:00 0 - 742# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 743# with the same exceptions 744Rule Brazil 1989 only - Oct 15 0:00 1:00 S 745Rule Brazil 1990 only - Feb 11 0:00 0 - 746# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 747# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 748# Decree 99,629 (1990-10-19) adds BA, MT. 749Rule Brazil 1990 only - Oct 21 0:00 1:00 S 750Rule Brazil 1991 only - Feb 17 0:00 0 - 751# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 752# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 753Rule Brazil 1991 only - Oct 20 0:00 1:00 S 754Rule Brazil 1992 only - Feb 9 0:00 0 - 755# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 756# adopted by same states. 757Rule Brazil 1992 only - Oct 25 0:00 1:00 S 758Rule Brazil 1993 only - Jan 31 0:00 0 - 759# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 760# adopted by same states, plus AM. 761# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 762# web page corrected 2004-01-07) adopted by same states, minus AM. 763# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 764# adopted by same states, plus MT and TO. 765# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 766# adds AL, SE. 767Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 768Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 769Rule Brazil 1996 only - Feb 11 0:00 0 - 770# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 771# adopted by same states, minus AL, SE. 772Rule Brazil 1996 only - Oct 6 0:00 1:00 S 773Rule Brazil 1997 only - Feb 16 0:00 0 - 774# From Daniel C. Sobral (1998-02-12): 775# In 1997, the DS began on October 6. The stated reason was that 776# because international television networks ignored Brazil's policy on DS, 777# they bought the wrong times on satellite for coverage of Pope's visit. 778# This year, the ending date of DS was postponed to March 1 779# to help dealing with the shortages of electric power. 780# 781# Decree 2,317 (1997-09-04), adopted by same states. 782Rule Brazil 1997 only - Oct 6 0:00 1:00 S 783# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 784# (1998-02-10) 785Rule Brazil 1998 only - Mar 1 0:00 0 - 786# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 787# adopted by the same states as before. 788Rule Brazil 1998 only - Oct 11 0:00 1:00 S 789Rule Brazil 1999 only - Feb 21 0:00 0 - 790# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 791# (1999-08-23) adopted by same states. 792# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 793# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 794Rule Brazil 1999 only - Oct 3 0:00 1:00 S 795Rule Brazil 2000 only - Feb 27 0:00 0 - 796# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 797# adopted by the same states as before. 798# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 799# repeals DST in PE and RR, effective 2000-10-15 00:00. 800# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 801# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 802# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 803# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 804Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 805Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 806# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 807# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 808Rule Brazil 2002 only - Nov 3 0:00 1:00 S 809# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 810# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 811Rule Brazil 2003 only - Oct 19 0:00 1:00 S 812# Decree 5,223 (2004-10-01) reestablishes DST in MT. 813# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 814Rule Brazil 2004 only - Nov 2 0:00 1:00 S 815# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 816# adopted by the same states as before. 817Rule Brazil 2005 only - Oct 16 0:00 1:00 S 818# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 819# adopted by the same states as before. 820Rule Brazil 2006 only - Nov 5 0:00 1:00 S 821Rule Brazil 2007 only - Feb 25 0:00 0 - 822# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 823# adopted by the same states as before. 824Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 825# From Frederico A. C. Neves (2008-09-10): 826# Acording to this decree 827# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 828# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 829# </a> 830# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 831# 3rd Feb Sunday. There is an exception on the return date when this is 832# the Carnival Sunday then the return date will be the next Sunday... 833Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 834Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 835Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 836Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 837Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 838Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 839Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 840Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 841Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 842Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 843Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 844Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 845Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 846# From Arthur David Olson (2008-09-29): 847# The next is wrong in some years but is better than nothing. 848Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 849 850# The latest ruleset listed above says that the following states observe DST: 851# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 852 853# Zone NAME GMTOFF RULES FORMAT [UNTIL] 854# 855# Fernando de Noronha (administratively part of PE) 856Zone America/Noronha -2:09:40 - LMT 1914 857 -2:00 Brazil FN%sT 1990 Sep 17 858 -2:00 - FNT 1999 Sep 30 859 -2:00 Brazil FN%sT 2000 Oct 15 860 -2:00 - FNT 2001 Sep 13 861 -2:00 Brazil FN%sT 2002 Oct 1 862 -2:00 - FNT 863# Other Atlantic islands have no permanent settlement. 864# These include Trindade and Martin Vaz (administratively part of ES), 865# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 866# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 867# it also included the Penedos. 868# 869# Amapa (AP), east Para (PA) 870# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 871# The division between east and west Para is the river Xingu. 872# In the north a very small part from the river Javary (now Jari I guess, 873# the border with Amapa) to the Amazon, then to the Xingu. 874Zone America/Belem -3:13:56 - LMT 1914 875 -3:00 Brazil BR%sT 1988 Sep 12 876 -3:00 - BRT 877# 878# west Para (PA) 879# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 880Zone America/Santarem -3:38:48 - LMT 1914 881 -4:00 Brazil AM%sT 1988 Sep 12 882 -4:00 - AMT 2008 Jun 24 00:00 883 -3:00 - BRT 884# 885# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 886# Paraiba (PB) 887Zone America/Fortaleza -2:34:00 - LMT 1914 888 -3:00 Brazil BR%sT 1990 Sep 17 889 -3:00 - BRT 1999 Sep 30 890 -3:00 Brazil BR%sT 2000 Oct 22 891 -3:00 - BRT 2001 Sep 13 892 -3:00 Brazil BR%sT 2002 Oct 1 893 -3:00 - BRT 894# 895# Pernambuco (PE) (except Atlantic islands) 896Zone America/Recife -2:19:36 - LMT 1914 897 -3:00 Brazil BR%sT 1990 Sep 17 898 -3:00 - BRT 1999 Sep 30 899 -3:00 Brazil BR%sT 2000 Oct 15 900 -3:00 - BRT 2001 Sep 13 901 -3:00 Brazil BR%sT 2002 Oct 1 902 -3:00 - BRT 903# 904# Tocantins (TO) 905Zone America/Araguaina -3:12:48 - LMT 1914 906 -3:00 Brazil BR%sT 1990 Sep 17 907 -3:00 - BRT 1995 Sep 14 908 -3:00 Brazil BR%sT 2003 Sep 24 909 -3:00 - BRT 910# 911# Alagoas (AL), Sergipe (SE) 912Zone America/Maceio -2:22:52 - LMT 1914 913 -3:00 Brazil BR%sT 1990 Sep 17 914 -3:00 - BRT 1995 Oct 13 915 -3:00 Brazil BR%sT 1996 Sep 4 916 -3:00 - BRT 1999 Sep 30 917 -3:00 Brazil BR%sT 2000 Oct 22 918 -3:00 - BRT 2001 Sep 13 919 -3:00 Brazil BR%sT 2002 Oct 1 920 -3:00 - BRT 921# 922# Bahia (BA) 923# There are too many Salvadors elsewhere, so use America/Bahia instead 924# of America/Salvador. 925Zone America/Bahia -2:34:04 - LMT 1914 926 -3:00 Brazil BR%sT 2003 Sep 24 927 -3:00 - BRT 928# 929# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 930# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 931# Santa Catarina (SC), Rio Grande do Sul (RS) 932Zone America/Sao_Paulo -3:06:28 - LMT 1914 933 -3:00 Brazil BR%sT 1963 Oct 23 00:00 934 -3:00 1:00 BRST 1964 935 -3:00 Brazil BR%sT 936# 937# Mato Grosso do Sul (MS) 938Zone America/Campo_Grande -3:38:28 - LMT 1914 939 -4:00 Brazil AM%sT 940# 941# Mato Grosso (MT) 942Zone America/Cuiaba -3:44:20 - LMT 1914 943 -4:00 Brazil AM%sT 2003 Sep 24 944 -4:00 - AMT 2004 Oct 1 945 -4:00 Brazil AM%sT 946# 947# Rondonia (RO) 948Zone America/Porto_Velho -4:15:36 - LMT 1914 949 -4:00 Brazil AM%sT 1988 Sep 12 950 -4:00 - AMT 951# 952# Roraima (RR) 953Zone America/Boa_Vista -4:02:40 - LMT 1914 954 -4:00 Brazil AM%sT 1988 Sep 12 955 -4:00 - AMT 1999 Sep 30 956 -4:00 Brazil AM%sT 2000 Oct 15 957 -4:00 - AMT 958# 959# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 960# The great circle line from Tabatinga to Porto Acre divides 961# east from west Amazonas. 962Zone America/Manaus -4:00:04 - LMT 1914 963 -4:00 Brazil AM%sT 1988 Sep 12 964 -4:00 - AMT 1993 Sep 28 965 -4:00 Brazil AM%sT 1994 Sep 22 966 -4:00 - AMT 967# 968# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 969# Eirunepe, Envira, Ipixuna 970Zone America/Eirunepe -4:39:28 - LMT 1914 971 -5:00 Brazil AC%sT 1988 Sep 12 972 -5:00 - ACT 1993 Sep 28 973 -5:00 Brazil AC%sT 1994 Sep 22 974 -5:00 - ACT 2008 Jun 24 00:00 975 -4:00 - AMT 976# 977# Acre (AC) 978Zone America/Rio_Branco -4:31:12 - LMT 1914 979 -5:00 Brazil AC%sT 1988 Sep 12 980 -5:00 - ACT 2008 Jun 24 00:00 981 -4:00 - AMT 982 983# Chile 984 985# From Eduardo Krell (1995-10-19): 986# The law says to switch to DST at midnight [24:00] on the second SATURDAY 987# of October.... The law is the same for March and October. 988# (1998-09-29): 989# Because of the drought this year, the government decided to go into 990# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 991# (unless there's another dry season next year, I guess). 992 993# From Julio I. Pacheco Troncoso (1999-03-18): 994# Because of the same drought, the government decided to end DST later, 995# on April 3, (one-time change). 996 997# From Oscar van Vlijmen (2006-10-08): 998# http://www.horaoficial.cl/cambio.htm 999 1000# From Jesper Norgaard Welen (2006-10-08): 1001# I think that there are some obvious mistakes in the suggested link 1002# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1003# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1004# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1005# anyhow it clears up some doubts too. 1006 1007# From Paul Eggert (2006-12-27): 1008# The following data for Chile and America/Santiago are from 1009# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1010# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1011# & Pottenger, except with DST transitions after 1932 cloned from 1012# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1013# but we have no other source. 1014 1015# From German Poo-Caaman~o (2008-03-03): 1016# Due to drought, Chile extends Daylight Time in three weeks. This 1017# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1018# and Saturday 3/29 at 22:00 for Pacific/Easter) 1019# The Supreme Decree is located at 1020# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1021# http://www.shoa.cl/servicios/supremo316.pdf 1022# </a> 1023# and the instructions for 2008 are located in: 1024# <a href="http://www.horaoficial.cl/cambio.htm"> 1025# http://www.horaoficial.cl/cambio.htm 1026# </a>. 1027 1028# From Jose Miguel Garrido (2008-03-05): 1029# ... 1030# You could see the announces of the change on 1031# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1032# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1033# </a>. 1034 1035# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1036Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1037Rule Chile 1928 1932 - Apr 1 0:00 0 - 1038Rule Chile 1942 only - Jun 1 4:00u 0 - 1039Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1040Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1041Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1042Rule Chile 1947 only - Apr 1 4:00u 0 - 1043Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1044Rule Chile 1969 only - Mar 30 3:00u 0 - 1045Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1046Rule Chile 1970 only - Mar 29 3:00u 0 - 1047Rule Chile 1971 only - Mar 14 3:00u 0 - 1048Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1049Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1050Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1051Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1052Rule Chile 1987 only - Apr 12 3:00u 0 - 1053Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1054Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1055Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1056Rule Chile 1990 only - Mar 18 3:00u 0 - 1057Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1058Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1059Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1060Rule Chile 1997 only - Mar 30 3:00u 0 - 1061Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1062Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1063Rule Chile 1999 only - Apr 4 3:00u 0 - 1064Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 1065Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1066# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1067# which is used below in specifying the transition. 1068Rule Chile 2008 only - Mar 30 3:00u 0 - 1069Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - 1070# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1071# (1996-09) says 1998-03-08. Ignore these. 1072# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1073Zone America/Santiago -4:42:46 - LMT 1890 1074 -4:42:46 - SMT 1910 # Santiago Mean Time 1075 -5:00 - CLT 1916 Jul 1 # Chile Time 1076 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1077 -4:00 - CLT 1919 Jul 1 # Chile Time 1078 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1079 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1080 -4:00 Chile CL%sT 1081Zone Pacific/Easter -7:17:44 - LMT 1890 1082 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1083 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1084 -6:00 Chile EAS%sT 1085# 1086# Sala y Gomez Island is like Pacific/Easter. 1087# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1088# San Felix, and Antarctic bases, are like America/Santiago. 1089 1090# Colombia 1091# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1092Rule CO 1992 only - May 3 0:00 1:00 S 1093Rule CO 1993 only - Apr 4 0:00 0 - 1094# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1095Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1096 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1097 -5:00 CO CO%sT # Colombia Time 1098# Malpelo, Providencia, San Andres 1099# no information; probably like America/Bogota 1100 1101# Curacao 1102# 1103# From Paul Eggert (2006-03-22): 1104# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1105# -4:00 since standard time was introduced on 1912-03-02; and that 1106# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1107# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1108# Saba Island has been like Curacao. 1109# This all predates our 1970 cutoff, though. 1110# 1111# By July 2007 Curacao and St Maarten are planned to become 1112# associated states within the Netherlands, much like Aruba; 1113# Bonaire, Saba and St Eustatius would become directly part of the 1114# Netherlands as Kingdom Islands. This won't affect their time zones 1115# though, as far as we know. 1116# 1117# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1118Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1119 -4:30 - ANT 1965 # Netherlands Antilles Time 1120 -4:00 - AST 1121 1122# Ecuador 1123# 1124# From Paul Eggert (2007-03-04): 1125# Apparently Ecuador had a failed experiment with DST in 1992. 1126# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1127# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1128# talk about "hora Sixto". Leave this alone for now, as we have no data. 1129# 1130# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1131Zone America/Guayaquil -5:19:20 - LMT 1890 1132 -5:14:00 - QMT 1931 # Quito Mean Time 1133 -5:00 - ECT # Ecuador Time 1134Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1135 -5:00 - ECT 1986 1136 -6:00 - GALT # Galapagos Time 1137 1138# Falklands 1139 1140# From Paul Eggert (2006-03-22): 1141# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1142# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1143 1144# From Falkland Islands Government Office, London (2001-01-22) 1145# via Jesper Norgaard: 1146# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1147# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1148# September. It is anticipated that the clocks will revert back at 2 1149# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1150# Sunday 1 September. 1151 1152# From Rives McDow (2001-02-13): 1153# 1154# I have communicated several times with people there, and the last 1155# time I had communications that was helpful was in 1998. Here is 1156# what was said then: 1157# 1158# "The general rule was that Stanley used daylight saving and the Camp 1159# did not. However for various reasons many people in the Camp have 1160# started to use daylight saving (known locally as 'Stanley Time') 1161# There is no rule as to who uses daylight saving - it is a matter of 1162# personal choice and so it is impossible to draw a map showing who 1163# uses it and who does not. Any list would be out of date as soon as 1164# it was produced. This year daylight saving ended on April 18/19th 1165# and started again on September 12/13th. I do not know what the rule 1166# is, but can find out if you like. We do not change at the same time 1167# as UK or Chile." 1168# 1169# I did have in my notes that the rule was "Second Saturday in Sep at 1170# 0:00 until third Saturday in Apr at 0:00". I think that this does 1171# not agree in some cases with Shanks; is this true? 1172# 1173# Also, there is no mention in the list that some areas in the 1174# Falklands do not use DST. I have found in my communications there 1175# that these areas are on the western half of East Falkland and all of 1176# West Falkland. Stanley is the only place that consistently observes 1177# DST. Again, as in other places in the world, the farmers don't like 1178# it. West Falkland is almost entirely sheep farmers. 1179# 1180# I know one lady there that keeps a list of which farm keeps DST and 1181# which doesn't each year. She runs a shop in Stanley, and says that 1182# the list changes each year. She uses it to communicate to her 1183# customers, catching them when they are home for lunch or dinner. 1184 1185# From Paul Eggert (2001-03-05): 1186# For now, we'll just record the time in Stanley, since we have no 1187# better info. 1188 1189# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1190Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1191Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1192Rule Falk 1939 only - Oct 1 0:00 1:00 S 1193Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1194Rule Falk 1943 only - Jan 1 0:00 0 - 1195Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1196Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1197Rule Falk 1984 only - Sep 16 0:00 1:00 S 1198Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1199Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1200Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1201Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1202# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1203Zone Atlantic/Stanley -3:51:24 - LMT 1890 1204 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1205 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1206 -3:00 Falk FK%sT 1985 Sep 15 1207 -4:00 Falk FK%sT 1208 1209# French Guiana 1210# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1211Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1212 -4:00 - GFT 1967 Oct # French Guiana Time 1213 -3:00 - GFT 1214 1215# Guyana 1216# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1217Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1218 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1219 -3:45 - GYT 1975 Jul 31 # Guyana Time 1220 -3:00 - GYT 1991 1221# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1222 -4:00 - GYT 1223 1224# Paraguay 1225# From Paul Eggert (2006-03-22): 1226# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1227# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1228# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1229# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1230Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1231Rule Para 1975 1978 - Mar 1 0:00 0 - 1232Rule Para 1979 1991 - Apr 1 0:00 0 - 1233Rule Para 1989 only - Oct 22 0:00 1:00 S 1234Rule Para 1990 only - Oct 1 0:00 1:00 S 1235Rule Para 1991 only - Oct 6 0:00 1:00 S 1236Rule Para 1992 only - Mar 1 0:00 0 - 1237Rule Para 1992 only - Oct 5 0:00 1:00 S 1238Rule Para 1993 only - Mar 31 0:00 0 - 1239Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1240Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1241Rule Para 1996 only - Mar 1 0:00 0 - 1242# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1243# From Steffen Thorsen (2000-10-02): 1244# I have three independent reports that Paraguay changed to DST this Sunday 1245# (10-01). 1246# 1247# Translated by Gwillim Law (2001-02-27) from 1248# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1249# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1250# </a>: 1251# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1252# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1253# system has been operating for several years. Formerly there was a separate 1254# decree each year; the new law has the same effect, but permanently. Every 1255# year, the time will change on the first Sunday of October; likewise, the 1256# clock will be set back on the first Sunday of March. 1257# 1258Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1259# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1260Rule Para 1997 only - Feb lastSun 0:00 0 - 1261# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1262# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1263Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1264# From Rives McDow (2002-02-28): 1265# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1266# dst method to be from the first Sunday in September to the first Sunday in 1267# April. 1268Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1269Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1270# 1271# From Jesper Norgaard Welen (2005-01-02): 1272# There are several sources that claim that Paraguay made 1273# a timezone rule change in autumn 2004. 1274# From Steffen Thorsen (2005-01-05): 1275# Decree 1,867 (2004-03-05) 1276# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1277# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1278Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1279Rule Para 2005 max - Mar Sun>=8 0:00 0 - 1280 1281# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1282Zone America/Asuncion -3:50:40 - LMT 1890 1283 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1284 -4:00 - PYT 1972 Oct # Paraguay Time 1285 -3:00 - PYT 1974 Apr 1286 -4:00 Para PY%sT 1287 1288# Peru 1289# 1290# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1291# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1292# When we were in Peru in 1985-1986, they apparently switched over 1293# sometime between December 29 and January 3 while we were on the Amazon. 1294# 1295# From Paul Eggert (2006-03-22): 1296# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1297 1298# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1299Rule Peru 1938 only - Jan 1 0:00 1:00 S 1300Rule Peru 1938 only - Apr 1 0:00 0 - 1301Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1302Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1303Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1304Rule Peru 1986 1987 - Apr 1 0:00 0 - 1305Rule Peru 1990 only - Jan 1 0:00 1:00 S 1306Rule Peru 1990 only - Apr 1 0:00 0 - 1307# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1308Rule Peru 1994 only - Jan 1 0:00 1:00 S 1309Rule Peru 1994 only - Apr 1 0:00 0 - 1310# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1311Zone America/Lima -5:08:12 - LMT 1890 1312 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1313 -5:00 Peru PE%sT # Peru Time 1314 1315# South Georgia 1316# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1317Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1318 -2:00 - GST # South Georgia Time 1319 1320# South Sandwich Is 1321# uninhabited; scientific personnel have wintered 1322 1323# Suriname 1324# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1325Zone America/Paramaribo -3:40:40 - LMT 1911 1326 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1327 -3:40:36 - PMT 1945 Oct # The capital moved? 1328 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1329 -3:30 - SRT 1984 Oct # Suriname Time 1330 -3:00 - SRT 1331 1332# Trinidad and Tobago 1333# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1334Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1335 -4:00 - AST 1336 1337# Uruguay 1338# From Paul Eggert (1993-11-18): 1339# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1340# From Shanks & Pottenger: 1341# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1342# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1343Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1344Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1345Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1346Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1347# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1348Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1349Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1350Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1351# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1352Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1353# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1354# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1355Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1356Rule Uruguay 1942 only - Jan 1 0:00 0 - 1357Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1358Rule Uruguay 1943 only - Mar 14 0:00 0 - 1359Rule Uruguay 1959 only - May 24 0:00 1:00 S 1360Rule Uruguay 1959 only - Nov 15 0:00 0 - 1361Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1362Rule Uruguay 1960 only - Mar 6 0:00 0 - 1363Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1364Rule Uruguay 1965 only - Sep 26 0:00 0 - 1365Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1366Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1367Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1368Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1369Rule Uruguay 1972 only - Aug 15 0:00 0 - 1370Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1371Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1372Rule Uruguay 1976 only - Oct 1 0:00 0 - 1373Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1374Rule Uruguay 1978 only - Apr 1 0:00 0 - 1375Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1376Rule Uruguay 1980 only - May 1 0:00 0 - 1377Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1378Rule Uruguay 1988 only - Mar 14 0:00 0 - 1379Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1380Rule Uruguay 1989 only - Mar 12 0:00 0 - 1381Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1382# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1383# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1384Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1385Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1386Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1387Rule Uruguay 1993 only - Feb 28 0:00 0 - 1388# From Eduardo Cota (2004-09-20): 1389# The uruguayan government has decreed a change in the local time.... 1390# http://www.presidencia.gub.uy/decretos/2004091502.htm 1391Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1392# From Steffen Thorsen (2005-03-11): 1393# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1394# save energy ... it was postponed two weeks.... 1395# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1396Rule Uruguay 2005 only - Mar 27 2:00 0 - 1397# From Eduardo Cota (2005-09-27): 1398# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1399# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1400# 02:00 local time, official time in Uruguay will be at GMT -2. 1401Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1402Rule Uruguay 2006 only - Mar 12 2:00 0 - 1403# From Jesper Norgaard Welen (2006-09-06): 1404# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1405Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1406Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1407# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1408Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1409 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1410 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1411 -3:00 Uruguay UY%sT 1412 1413# Venezuela 1414# 1415# From John Stainforth (2007-11-28): 1416# ... the change for Venezuela originally expected for 2007-12-31 has 1417# been brought forward to 2007-12-09. The official announcement was 1418# published today in the "Gaceta Oficial de la Republica Bolivariana 1419# de Venezuela, numero 38.819" (official document for all laws or 1420# resolution publication) 1421# http://www.globovision.com/news.php?nid=72208 1422 1423# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1424Zone America/Caracas -4:27:44 - LMT 1890 1425 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1426 -4:30 - VET 1965 # Venezuela Time 1427 -4:00 - VET 2007 Dec 9 03:00 1428 -4:30 - VET 1429
