1# <pre> 2# @(#)southamerica 8.52 3# This file is in the public domain, so clarified as of 4# 2009-05-17 by Arthur David Olson. 5 6# This data is by no means authoritative; if you think you know better, 7# go ahead and edit the file (and please send any changes to 8# tz@elsie.nci.nih.gov for general use in the future). 9 10# From Paul Eggert (2006-03-22): 11# A good source for time zone historical data outside the U.S. is 12# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 13# San Diego: ACS Publications, Inc. (2003). 14# 15# Gwillim Law writes that a good source 16# for recent time zone data is the International Air Transport 17# Association's Standard Schedules Information Manual (IATA SSIM), 18# published semiannually. Law sent in several helpful summaries 19# of the IATA's data after 1990. 20# 21# Except where otherwise noted, Shanks & Pottenger is the source for 22# entries through 1990, and IATA SSIM is the source for entries afterwards. 23# 24# Earlier editions of these tables used the North American style (e.g. ARST and 25# ARDT for Argentine Standard and Daylight Time), but the following quote 26# suggests that it's better to use European style (e.g. ART and ARST). 27# I suggest the use of _Summer time_ instead of the more cumbersome 28# _daylight-saving time_. _Summer time_ seems to be in general use 29# in Europe and South America. 30# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 31# H L Mencken, _The American Language: Supplement I_ (1960), p 466 32# 33# Earlier editions of these tables also used the North American style 34# for time zones in Brazil, but this was incorrect, as Brazilians say 35# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 36# the railroad sector, writes (1999-07-06): 37# The subject of time zones is currently a matter of discussion/debate in 38# Brazil. Let's say that "the Brasilia time" is considered the 39# "official time" because Brasilia is the capital city. 40# The other three time zones are called "Brasilia time "minus one" or 41# "plus one" or "plus two". As far as I know there is no such 42# name/designation as "Eastern Time" or "Central Time". 43# So I invented the following (English-language) abbreviations for now. 44# Corrections are welcome! 45# std dst 46# -2:00 FNT FNST Fernando de Noronha 47# -3:00 BRT BRST Brasilia 48# -4:00 AMT AMST Amazon 49# -5:00 ACT ACST Acre 50 51############################################################################### 52 53############################################################################### 54 55# Argentina 56 57# From Bob Devine (1988-01-28): 58# Argentina: first Sunday in October to first Sunday in April since 1976. 59# Double Summer time from 1969 to 1974. Switches at midnight. 60 61# From U. S. Naval Observatory (1988-01-199): 62# ARGENTINA 3 H BEHIND UTC 63 64# From Hernan G. Otero (1995-06-26): 65# I am sending modifications to the Argentine time zone table... 66# AR was chosen because they are the ISO letters that represent Argentina. 67 68# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 69Rule Arg 1930 only - Dec 1 0:00 1:00 S 70Rule Arg 1931 only - Apr 1 0:00 0 - 71Rule Arg 1931 only - Oct 15 0:00 1:00 S 72Rule Arg 1932 1940 - Mar 1 0:00 0 - 73Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 74Rule Arg 1940 only - Jul 1 0:00 1:00 S 75Rule Arg 1941 only - Jun 15 0:00 0 - 76Rule Arg 1941 only - Oct 15 0:00 1:00 S 77Rule Arg 1943 only - Aug 1 0:00 0 - 78Rule Arg 1943 only - Oct 15 0:00 1:00 S 79Rule Arg 1946 only - Mar 1 0:00 0 - 80Rule Arg 1946 only - Oct 1 0:00 1:00 S 81Rule Arg 1963 only - Oct 1 0:00 0 - 82Rule Arg 1963 only - Dec 15 0:00 1:00 S 83Rule Arg 1964 1966 - Mar 1 0:00 0 - 84Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 85Rule Arg 1967 only - Apr 2 0:00 0 - 86Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 87Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 88Rule Arg 1974 only - Jan 23 0:00 1:00 S 89Rule Arg 1974 only - May 1 0:00 0 - 90Rule Arg 1988 only - Dec 1 0:00 1:00 S 91# 92# From Hernan G. Otero (1995-06-26): 93# These corrections were contributed by InterSoft Argentina S.A., 94# obtaining the data from the: 95# Talleres de Hidrografia Naval Argentina 96# (Argentine Naval Hydrography Institute) 97Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 98Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 99# 100# From Hernan G. Otero (1995-06-26): 101# From this moment on, the law that mandated the daylight saving 102# time corrections was derogated and no more modifications 103# to the time zones (for daylight saving) are now made. 104# 105# From Rives McDow (2000-01-10): 106# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 107# which did not result in the switch of a time zone, as they stayed 9 hours 108# from the International Date Line. 109Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 110# From Paul Eggert (2007-12-28): 111# DST was set to expire on March 5, not March 3, but since it was converted 112# to standard time on March 3 it's more convenient for us to pretend that 113# it ended on March 3. 114Rule Arg 2000 only - Mar 3 0:00 0 - 115# 116# From Peter Gradelski via Steffen Thorsen (2000-03-01): 117# We just checked with our Sao Paulo office and they say the government of 118# Argentina decided not to become one of the countries that go on or off DST. 119# So Buenos Aires should be -3 hours from GMT at all times. 120# 121# From Fabian L. Arce Jofre (2000-04-04): 122# The law that claimed DST for Argentina was derogated by President Fernando 123# de la Rua on March 2, 2000, because it would make people spend more energy 124# in the winter time, rather than less. The change took effect on March 3. 125# 126# From Mariano Absatz (2001-06-06): 127# one of the major newspapers here in Argentina said that the 1999 128# Timezone Law (which never was effectively applied) will (would?) be 129# in effect.... The article is at 130# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 131# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 132# 1999-09-17, and published 1999-09-21. The official publication is at: 133# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 134# Regretfully, you have to subscribe (and pay) for the on-line version.... 135# 136# (2001-06-12): 137# the timezone for Argentina will not change next Sunday. 138# Apparently it will do so on Sunday 24th.... 139# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 140# 141# (2001-06-25): 142# Last Friday (yes, the last working day before the date of the change), the 143# Senate annulled the 1999 law that introduced the changes later postponed. 144# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 145# It remains the vote of the Deputies..., but it will be the same.... 146# This kind of things had always been done this way in Argentina. 147# We are still -03:00 all year round in all of the country. 148# 149# From Steffen Thorsen (2007-12-21): 150# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 151# all of the country (all Zone-entries) are affected. News reports like 152# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 153# that Argentina will use DST next year as well, from October to 154# March, although exact rules are not given. 155# 156# From Jesper Norgaard Welen (2007-12-26) 157# The last hurdle of Argentina DST is over, the proposal was approved in 158# the lower chamber too (Deputados) with a vote 192 for and 2 against. 159# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 160# the original scanned proposal, where the dates and the zero hours are 161# clear and unambiguous...This is the article about final approval: 162# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 163# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 164# </a> 165# 166# From Paul Eggert (2007-12-22): 167# For dates after mid-2008, the following rules are my guesses and 168# are quite possibly wrong, but are more likely than no DST at all. 169 170# From Alexander Krivenyshev (2008-09-05): 171# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 172# Argentina will start DST on Sunday October 19, 2008. 173# 174# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 175# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 176# </a> 177# OR 178# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 179# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 180# </a> 181 182# From Rodrigo Severo (2008-10-06): 183# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 184# ... 185# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 186# Hi, there is a problem with timezone-data-2008e and maybe with 187# timezone-data-2008f 188# Argentinian law [Number] 25.155 is no longer valid. 189# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 190# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 191# </a> 192# The new one is law [Number] 26.350 193# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 194# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 195# </a> 196# So there is no summer time in Argentina for now. 197 198# From Mariano Absatz (2008-10-20): 199# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 200# From 2008-10-19 until 2009-03-15 201# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 202# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 203# </a> 204# 205# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 206# Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 207# and Tierra del Fuego 208# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 209# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 210# </a> 211# 212# Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 213# it will not apply DST either (even when it was not included in Decree 1705/2008) 214# <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 215# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 216# </a> 217 218# From fullinet (2009-10-18): 219# As announced in 220# <a hef="http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356"> 221# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 222# </a> 223# (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change") 224# 225# "Por el momento, el Gobierno Nacional resolvio no modificar la hora 226# oficial, decision que estaba en estudio para su implementacion el 227# domingo 18 de octubre. Desde el Ministerio de Planificacion se anuncio 228# que la Argentina hoy, en estas condiciones meteorologicas, no necesita 229# la modificacion del huso horario, ya que 2009 nos encuentra con 230# crecimiento en la produccion y distribucion energetica." 231 232Rule Arg 2007 only - Dec 30 0:00 1:00 S 233Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 234Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 235 236# From Mariano Absatz (2004-05-21): 237# Today it was officially published that the Province of Mendoza is changing 238# its timezone this winter... starting tomorrow night.... 239# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 240# From Paul Eggert (2004-05-24): 241# It's Law No. 7,210. This change is due to a public power emergency, so for 242# now we'll assume it's for this year only. 243# 244# From Paul Eggert (2006-03-22): 245# <a href="http://www.spicasc.net/horvera.html"> 246# Hora de verano para la Republica Argentina (2003-06-08) 247# </a> says that standard time in Argentina from 1894-10-31 248# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 249# over Shanks & Pottenger. 250# 251# From Mariano Absatz (2004-06-05): 252# These media articles from a major newspaper mostly cover the current state: 253# http://www.lanacion.com.ar/04/05/27/de_604825.asp 254# http://www.lanacion.com.ar/04/05/28/de_605203.asp 255# 256# The following eight (8) provinces pulled clocks back to UTC-04:00 at 257# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 258# Apparently, all nine provinces would go back to UTC-03:00 at the same 259# time in October 17th. 260# 261# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 262# Tierra del Fuego, Tucuman. 263# 264# From Mariano Absatz (2004-06-14): 265# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 266# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 267# annoyance with the change is much higher than the power savings obtained.... 268# 269# From Gwillim Law (2004-06-14): 270# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 271# "The time change in Tierra del Fuego was a conflicted decision from 272# the start. The government had decreed that the measure would take 273# effect on June 1, but a normative error forced the new time to begin 274# three days earlier, from a Saturday to a Sunday.... 275# Our understanding was that the change was originally scheduled to take place 276# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 277# provinces). Sunday was May 30, only two days earlier. So the article 278# contains a contradiction. I would give more credence to the Saturday/Sunday 279# date than the "three days earlier" phrase, and conclude that Tierra del 280# Fuego set its clocks back at 2004-05-30 00:00. 281# 282# From Steffen Thorsen (2004-10-05): 283# The previous law 7210 which changed the province of Mendoza's time zone 284# back in May have been modified slightly in a new law 7277, which set the 285# new end date to 2004-09-26 (original date was 2004-10-17). 286# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 287# 288# From Mariano Absatz (2004-10-05): 289# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 290# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 291# at midnight between Saturday, July 24th and Sunday, July 25th.... 292# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 293# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 294# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 295 296# From Alex Krivenyshev (2008-01-17): 297# Here are articles that Argentina Province San Luis is planning to end DST 298# as earlier as upcoming Monday January 21, 2008 or February 2008: 299# 300# Provincia argentina retrasa reloj y marca diferencia con resto del pais 301# (Argentine Province delayed clock and mark difference with the rest of the 302# country) 303# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 304# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 305# </a> 306# 307# Es inminente que en San Luis atrasen una hora los relojes 308# (It is imminent in San Luis clocks one hour delay) 309# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 310# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 311# </a> 312# 313# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 314# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 315# </a> 316 317# From Jesper Norgaard Welen (2008-01-18): 318# The page of the San Luis provincial government 319# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 320# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 321# </a> 322# confirms what Alex Krivenyshev has earlier sent to the tz 323# emailing list about that San Luis plans to return to standard 324# time much earlier than the rest of the country. It also 325# confirms that upon request the provinces San Juan and Mendoza 326# refused to follow San Luis in this change. 327# 328# The change is supposed to take place Monday the 21.st at 0:00 329# hours. As far as I understand it if this goes ahead, we need 330# a new timezone for San Luis (although there are also documented 331# independent changes in the southamerica file of San Luis in 332# 1990 and 1991 which has not been confirmed). 333 334# From Jesper Norgaard Welen (2008-01-25): 335# Unfortunately the below page has become defunct, about the San Luis 336# time change. Perhaps because it now is part of a group of pages "Most 337# important pages of 2008." 338# 339# You can use 340# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 341# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 342# </a> 343# instead it seems. Or use "Buscador" from the main page of the San Luis 344# government, and fill in "huso" and click OK, and you will get 3 pages 345# from which the first one is identical to the above. 346 347# From Mariano Absatz (2008-01-28): 348# I can confirm that the Province of San Luis (and so far only that 349# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 350# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 351# 1 hour), and they intend to keep UTC-3 as their timezone all year round 352# (that is, unless they change their mind any minute now). 353# 354# So we'll have to add yet another city to 'southamerica' (I think San 355# Luis city is the mos populated city in the Province, so it'd be 356# America/Argentina/San_Luis... of course I can't remember if San Luis's 357# history of particular changes goes along with Mendoza or San Juan :-( 358# (I only remember not being able to collect hard facts about San Luis 359# back in 2004, when these provinces changed to UTC-4 for a few days, I 360# mailed them personally and never got an answer). 361 362# From Paul Eggert (2008-06-30): 363# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 364# from the IATA otherwise. As noted below, Shanks & Pottenger say that 365# America/Cordoba split into 6 subregions during 1991/1992, one of which 366# was America/San_Luis, but we haven't verified this yet so for now we'll 367# keep America/Cordoba a single region rather than splitting it into the 368# other 5 subregions. 369 370# From Mariano Absatz (2009-03-13): 371# Yesterday (with our usual 2-day notice) the Province of San Luis 372# decided that next Sunday instead of "staying" @utc-03:00 they will go 373# to utc-04:00 until the second Saturday in October... 374# 375# The press release is at 376# <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 377# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 378# </a> 379# (I couldn't find the decree, but 380# <a href="http://www.sanluis.gov.ar"> 381# www.sanluis.gov.ar 382# <a/> 383# is the official page for the Province Government). 384# 385# There's also a note in only one of the major national papers (La Naci�n) at 386# <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912"> 387# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 388# </a> 389# 390# The press release says: 391# (...) anunci� que el pr�ximo domingo a las 00:00 los puntanos deber�n 392# atrasar una hora sus relojes. 393# 394# A partir de entonces, San Luis establecer� el huso horario propio de 395# la Provincia. De esta manera, durante el periodo del calendario anual 396# 2009, el cambio horario quedar� comprendido entre las 00:00 del tercer 397# domingo de marzo y las 24:00 del segundo s�bado de octubre. 398# Quick&dirty translation 399# (...) announced that next Sunday, at 00:00, Puntanos (the San Luis 400# inhabitants) will have to turn back one hour their clocks 401# 402# Since then, San Luis will establish its own Province timezone. Thus, 403# during 2009, this timezone change will run from 00:00 the third Sunday 404# in March until 24:00 of the second Saturday in October. 405 406# From Mariano Absatz (2009-10-16): 407# ...the Province of San Luis is a case in itself. 408# 409# The Law at 410# <a href="http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276>" 411# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 412# </a> 413# is ambiguous because establishes a calendar from the 2nd Sunday in 414# October at 0:00 thru the 2nd Saturday in March at 24:00 and the 415# complement of that starting on the 2nd Sunday of March at 0:00 and 416# ending on the 2nd Saturday of March at 24:00. 417# 418# This clearly breaks every time the 1st of March or October is a Sunday. 419# 420# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 421# Sunday of October and March. 422# 423# The problem is that the changes in the rest of the Provinces that did 424# change in 2007/2008, were made according to the Federal Law and Decrees 425# that did so on the 3rd Sunday of October and March. 426# 427# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 428# (October 11th) at 0:00. 429# 430# So I guess a new set of rules, besides "Arg", must be made and the last 431# America/Argentina/San_Luis entries should change to use these... 432# 433# I'm enclosing a patch that does what I say... regretfully, the San Luis 434# timezone must be called "WART/WARST" even when most of the time (like, 435# right now) WARST == ART... that is, since last Sunday, all the country 436# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 437# of the country calls it "ART". 438# ... 439 440# From Alexander Krivenyshev (2010-04-09): 441# According to news reports from El Diario de la Republica Province San 442# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 443# after April 11, 2010--will continue to have same time as rest of 444# Argentina (UTC-3) (no DST). 445# 446# Confirmaron la prórroga del huso horario de verano (Spanish) 447# <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9"> 448# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 449# </a> 450# or (some English translation): 451# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html"> 452# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 453# </a> 454 455# From Mariano Absatz (2010-04-12): 456# yes...I can confirm this...and given that San Luis keeps calling 457# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 458# rules...San Luis is still using "Western ARgentina Time" and it got 459# stuck on Summer daylight savings time even though the summer is over. 460 461# Zone NAME GMTOFF RULES FORMAT [UNTIL] 462# 463# Buenos Aires (BA), Capital Federal (CF), 464Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 465 -4:16:48 - CMT 1920 May # Cordoba Mean Time 466 -4:00 - ART 1930 Dec 467 -4:00 Arg AR%sT 1969 Oct 5 468 -3:00 Arg AR%sT 1999 Oct 3 469 -4:00 Arg AR%sT 2000 Mar 3 470 -3:00 Arg AR%sT 471# 472# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 473# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 474# 475# Shanks & Pottenger also make the following claims, which we haven't verified: 476# - Formosa switched to -3:00 on 1991-01-07. 477# - Misiones switched to -3:00 on 1990-12-29. 478# - Chaco switched to -3:00 on 1991-01-04. 479# - Santiago del Estero switched to -4:00 on 1991-04-01, 480# then to -3:00 on 1991-04-26. 481# 482Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 483 -4:16:48 - CMT 1920 May 484 -4:00 - ART 1930 Dec 485 -4:00 Arg AR%sT 1969 Oct 5 486 -3:00 Arg AR%sT 1991 Mar 3 487 -4:00 - WART 1991 Oct 20 488 -3:00 Arg AR%sT 1999 Oct 3 489 -4:00 Arg AR%sT 2000 Mar 3 490 -3:00 Arg AR%sT 491# 492# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 493Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 494 -4:16:48 - CMT 1920 May 495 -4:00 - ART 1930 Dec 496 -4:00 Arg AR%sT 1969 Oct 5 497 -3:00 Arg AR%sT 1991 Mar 3 498 -4:00 - WART 1991 Oct 20 499 -3:00 Arg AR%sT 1999 Oct 3 500 -4:00 Arg AR%sT 2000 Mar 3 501 -3:00 Arg AR%sT 2008 Oct 18 502 -3:00 - ART 503# 504# Tucuman (TM) 505Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 506 -4:16:48 - CMT 1920 May 507 -4:00 - ART 1930 Dec 508 -4:00 Arg AR%sT 1969 Oct 5 509 -3:00 Arg AR%sT 1991 Mar 3 510 -4:00 - WART 1991 Oct 20 511 -3:00 Arg AR%sT 1999 Oct 3 512 -4:00 Arg AR%sT 2000 Mar 3 513 -3:00 - ART 2004 Jun 1 514 -4:00 - WART 2004 Jun 13 515 -3:00 Arg AR%sT 516# 517# La Rioja (LR) 518Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 519 -4:16:48 - CMT 1920 May 520 -4:00 - ART 1930 Dec 521 -4:00 Arg AR%sT 1969 Oct 5 522 -3:00 Arg AR%sT 1991 Mar 1 523 -4:00 - WART 1991 May 7 524 -3:00 Arg AR%sT 1999 Oct 3 525 -4:00 Arg AR%sT 2000 Mar 3 526 -3:00 - ART 2004 Jun 1 527 -4:00 - WART 2004 Jun 20 528 -3:00 Arg AR%sT 2008 Oct 18 529 -3:00 - ART 530# 531# San Juan (SJ) 532Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 533 -4:16:48 - CMT 1920 May 534 -4:00 - ART 1930 Dec 535 -4:00 Arg AR%sT 1969 Oct 5 536 -3:00 Arg AR%sT 1991 Mar 1 537 -4:00 - WART 1991 May 7 538 -3:00 Arg AR%sT 1999 Oct 3 539 -4:00 Arg AR%sT 2000 Mar 3 540 -3:00 - ART 2004 May 31 541 -4:00 - WART 2004 Jul 25 542 -3:00 Arg AR%sT 2008 Oct 18 543 -3:00 - ART 544# 545# Jujuy (JY) 546Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 547 -4:16:48 - CMT 1920 May 548 -4:00 - ART 1930 Dec 549 -4:00 Arg AR%sT 1969 Oct 5 550 -3:00 Arg AR%sT 1990 Mar 4 551 -4:00 - WART 1990 Oct 28 552 -4:00 1:00 WARST 1991 Mar 17 553 -4:00 - WART 1991 Oct 6 554 -3:00 1:00 ARST 1992 555 -3:00 Arg AR%sT 1999 Oct 3 556 -4:00 Arg AR%sT 2000 Mar 3 557 -3:00 Arg AR%sT 2008 Oct 18 558 -3:00 - ART 559# 560# Catamarca (CT), Chubut (CH) 561Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 562 -4:16:48 - CMT 1920 May 563 -4:00 - ART 1930 Dec 564 -4:00 Arg AR%sT 1969 Oct 5 565 -3:00 Arg AR%sT 1991 Mar 3 566 -4:00 - WART 1991 Oct 20 567 -3:00 Arg AR%sT 1999 Oct 3 568 -4:00 Arg AR%sT 2000 Mar 3 569 -3:00 - ART 2004 Jun 1 570 -4:00 - WART 2004 Jun 20 571 -3:00 Arg AR%sT 2008 Oct 18 572 -3:00 - ART 573# 574# Mendoza (MZ) 575Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 576 -4:16:48 - CMT 1920 May 577 -4:00 - ART 1930 Dec 578 -4:00 Arg AR%sT 1969 Oct 5 579 -3:00 Arg AR%sT 1990 Mar 4 580 -4:00 - WART 1990 Oct 15 581 -4:00 1:00 WARST 1991 Mar 1 582 -4:00 - WART 1991 Oct 15 583 -4:00 1:00 WARST 1992 Mar 1 584 -4:00 - WART 1992 Oct 18 585 -3:00 Arg AR%sT 1999 Oct 3 586 -4:00 Arg AR%sT 2000 Mar 3 587 -3:00 - ART 2004 May 23 588 -4:00 - WART 2004 Sep 26 589 -3:00 Arg AR%sT 2008 Oct 18 590 -3:00 - ART 591# 592# San Luis (SL) 593 594Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 595Rule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S 596 597Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 598 -4:16:48 - CMT 1920 May 599 -4:00 - ART 1930 Dec 600 -4:00 Arg AR%sT 1969 Oct 5 601 -3:00 Arg AR%sT 1990 602 -3:00 1:00 ARST 1990 Mar 14 603 -4:00 - WART 1990 Oct 15 604 -4:00 1:00 WARST 1991 Mar 1 605 -4:00 - WART 1991 Jun 1 606 -3:00 - ART 1999 Oct 3 607 -4:00 1:00 WARST 2000 Mar 3 608 -3:00 - ART 2004 May 31 609 -4:00 - WART 2004 Jul 25 610 -3:00 Arg AR%sT 2008 Jan 21 611 -4:00 SanLuis WAR%sT 612# 613# Santa Cruz (SC) 614Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 615 -4:16:48 - CMT 1920 May # Cordoba Mean Time 616 -4:00 - ART 1930 Dec 617 -4:00 Arg AR%sT 1969 Oct 5 618 -3:00 Arg AR%sT 1999 Oct 3 619 -4:00 Arg AR%sT 2000 Mar 3 620 -3:00 - ART 2004 Jun 1 621 -4:00 - WART 2004 Jun 20 622 -3:00 Arg AR%sT 2008 Oct 18 623 -3:00 - ART 624# 625# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 626Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 627 -4:16:48 - CMT 1920 May # Cordoba Mean Time 628 -4:00 - ART 1930 Dec 629 -4:00 Arg AR%sT 1969 Oct 5 630 -3:00 Arg AR%sT 1999 Oct 3 631 -4:00 Arg AR%sT 2000 Mar 3 632 -3:00 - ART 2004 May 30 633 -4:00 - WART 2004 Jun 20 634 -3:00 Arg AR%sT 2008 Oct 18 635 -3:00 - ART 636 637# Aruba 638# Zone NAME GMTOFF RULES FORMAT [UNTIL] 639Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 640 -4:30 - ANT 1965 # Netherlands Antilles Time 641 -4:00 - AST 642 643# Bolivia 644# Zone NAME GMTOFF RULES FORMAT [UNTIL] 645Zone America/La_Paz -4:32:36 - LMT 1890 646 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 647 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 648 -4:00 - BOT # Bolivia Time 649 650# Brazil 651 652# From Paul Eggert (1993-11-18): 653# The mayor of Rio recently attempted to change the time zone rules 654# just in his city, in order to leave more summer time for the tourist trade. 655# The rule change lasted only part of the day; 656# the federal government refused to follow the city's rules, and business 657# was in a chaos, so the mayor backed down that afternoon. 658 659# From IATA SSIM (1996-02): 660# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 661# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 662# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 663# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 664# [The last three states are new to this issue of the IATA SSIM.] 665 666# From Gwillim Law (1996-10-07): 667# Geography, history (Tocantins was part of Goias until 1989), and other 668# sources of time zone information lead me to believe that AL, SE, and TO were 669# always in BR1, and so the only change was whether or not they observed DST.... 670# The earliest issue of the SSIM I have is 2/91. Each issue from then until 671# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 672# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 673# (UTC-4).... The other two time zones given for Brazil are BR3, which is 674# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 675# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 676# become part of the state of Pernambuco). The boundary between BR1 and BR2 677# has never been clearly stated. They've simply been called East and West. 678# However, some conclusions can be drawn from another IATA manual: the Airline 679# Coding Directory, which lists close to 400 airports in Brazil. For each 680# airport it gives a time zone which is coded to the SSIM. From that 681# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 682# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 683# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 684 685# From Marcos Tadeu (1998-09-27): 686# <a href="http://pcdsh01.on.br/verao1.html"> 687# Brazilian official page 688# </a> 689 690# From Jesper Norgaard (2000-11-03): 691# [For an official list of which regions in Brazil use which time zones, see:] 692# http://pcdsh01.on.br/Fusbr.htm 693# http://pcdsh01.on.br/Fusbrhv.htm 694 695# From Celso Doria via David Madeo (2002-10-09): 696# The reason for the delay this year has to do with elections in Brazil. 697# 698# Unlike in the United States, elections in Brazil are 100% computerized and 699# the results are known almost immediately. Yesterday, it was the first 700# round of the elections when 115 million Brazilians voted for President, 701# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 702# counting (or re-counting) votes anymore and we know there will be a second 703# round for the Presidency and also for some Governors. The 2nd round will 704# take place on October 27th. 705# 706# The reason why the DST will only begin November 3rd is that the thousands 707# of electoral machines used cannot have their time changed, and since the 708# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 709# the Government decided to postpone DST, instead of changing the Constitution 710# (maybe, for the next elections, it will be possible to change the clock)... 711 712# From Rodrigo Severo (2004-10-04): 713# It's just the biannual change made necessary by the much hyped, supposedly 714# modern Brazilian eletronic voting machines which, apparently, can't deal 715# with a time change between the first and the second rounds of the elections. 716 717# From Steffen Thorsen (2007-09-20): 718# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 719# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 720 721# From Paul Schulze (2008-06-24): 722# ...by law number 11.662 of April 24, 2008 (published in the "Diario 723# Oficial da Uniao"...) in Brazil there are changes in the timezones, 724# effective today (00:00am at June 24, 2008) as follows: 725# 726# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 727# part of the Amazonas state that had this timezone now being put to the 728# timezone UTC+4 729# b) The whole Para state now is put at timezone UTC+3, instead of just 730# part of it, as was before. 731# 732# This change follows a proposal of senator Tiao Viana of Acre state, that 733# proposed it due to concerns about open television channels displaying 734# programs inappropriate to youths in the states that had the timezone 735# UTC+5 too early in the night. In the occasion, some more corrections 736# were proposed, trying to unify the timezones of any given state. This 737# change modifies timezone rules defined in decree 2.784 of 18 June, 738# 1913. 739 740# From Rodrigo Severo (2008-06-24): 741# Just correcting the URL: 742# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> 743# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 744# </a> 745# 746# As a result of the above Decree I believe the America/Rio_Branco 747# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 748# be created to represent the...west side of the Para State. I 749# suggest this new timezone be called Santarem as the most 750# important/populated city in the affected area. 751# 752# This new timezone would be the same as the Rio_Branco timezone up to 753# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 754 755# From Alex Krivenyshev (2008-06-24): 756# This is a quick reference page for New and Old Brazil Time Zones map. 757# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 758# http://www.worldtimezone.com/brazil-time-new-old.php 759# </a> 760# 761# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 762# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 763# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 764 765# From Paul Eggert (2002-10-10): 766# The official decrees referenced below are mostly taken from 767# <a href="http://pcdsh01.on.br/DecHV.html"> 768# Decretos sobre o Horario de Verao no Brasil 769# </a>. 770 771# From Steffen Thorsen (2008-08-29): 772# As announced by the government and many newspapers in Brazil late 773# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 774# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 775# past years experience with the elections, there was a good chance that 776# the start was postponed to November, but it did not happen this year. 777# 778# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 779# 780# An official page about it: 781# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 782# http://www.mme.gov.br/site/news/detail.do?newsId=16722 783# </a> 784# Note that this link does not always work directly, but must be accessed 785# by going to 786# <a href="http://www.mme.gov.br/first"> 787# http://www.mme.gov.br/first 788# </a> 789# 790# One example link that works directly: 791# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 792# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 793# (Portuguese) 794# </a> 795# 796# We have a written a short article about it as well: 797# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 798# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 799# </a> 800# 801# From Alexander Krivenyshev (2011-10-04): 802# State Bahia will return to Daylight savings time this year after 8 years off. 803# The announcement was made by Governor Jaques Wagner in an interview to a 804# television station in Salvador. 805 806# In Portuguese: 807# <a href="http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html"> 808# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 809# </a> and 810# <a href="http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html"> 811# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 812# </a> 813 814# From Guilherme Bernardes Rodrigues (2011-10-07): 815# There is news in the media, however there is still no decree about it. 816# I just send a e-mail to Zulmira Brand�o at 817# <a href="http://pcdsh01.on.br/">http://pcdsh01.on.br/</a> the 818# oficial agency about time in Brazil, and she confirmed that the old rule is 819# still in force. 820 821# From Guilherme Bernardes Rodrigues (2011-10-14) 822# It's official, the President signed a decree that includes Bahia in summer 823# time. 824# [ and in a second message (same day): ] 825# I found the decree. 826# 827# DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011 828# Link : 829# <a href="http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6"> 830# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 831# </a> 832 833 834# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 835# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 836# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 837Rule Brazil 1931 only - Oct 3 11:00 1:00 S 838Rule Brazil 1932 1933 - Apr 1 0:00 0 - 839Rule Brazil 1932 only - Oct 3 0:00 1:00 S 840# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 841# revoked DST. 842# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 843# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 844Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 845Rule Brazil 1950 only - Apr 16 1:00 0 - 846Rule Brazil 1951 1952 - Apr 1 0:00 0 - 847# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 848Rule Brazil 1953 only - Mar 1 0:00 0 - 849# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 850# revoked DST. 851# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 852# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 853# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 854# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 855# extended the above decree to all of the national territory on 12-09. 856Rule Brazil 1963 only - Dec 9 0:00 1:00 S 857# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 858# extended summer time by one day to 1964-03-01 00:00 (start of school). 859Rule Brazil 1964 only - Mar 1 0:00 0 - 860# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 861Rule Brazil 1965 only - Jan 31 0:00 1:00 S 862Rule Brazil 1965 only - Mar 31 0:00 0 - 863# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 864Rule Brazil 1965 only - Dec 1 0:00 1:00 S 865# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 866Rule Brazil 1966 1968 - Mar 1 0:00 0 - 867Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 868# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 869# revoked DST. 870# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 871Rule Brazil 1985 only - Nov 2 0:00 1:00 S 872# Decree 92,310 (1986-01-21) 873# Decree 92,463 (1986-03-13) 874Rule Brazil 1986 only - Mar 15 0:00 0 - 875# Decree 93,316 (1986-10-01) 876Rule Brazil 1986 only - Oct 25 0:00 1:00 S 877Rule Brazil 1987 only - Feb 14 0:00 0 - 878# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 879Rule Brazil 1987 only - Oct 25 0:00 1:00 S 880Rule Brazil 1988 only - Feb 7 0:00 0 - 881# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 882# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 883Rule Brazil 1988 only - Oct 16 0:00 1:00 S 884Rule Brazil 1989 only - Jan 29 0:00 0 - 885# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 886# with the same exceptions 887Rule Brazil 1989 only - Oct 15 0:00 1:00 S 888Rule Brazil 1990 only - Feb 11 0:00 0 - 889# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 890# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 891# Decree 99,629 (1990-10-19) adds BA, MT. 892Rule Brazil 1990 only - Oct 21 0:00 1:00 S 893Rule Brazil 1991 only - Feb 17 0:00 0 - 894# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 895# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 896Rule Brazil 1991 only - Oct 20 0:00 1:00 S 897Rule Brazil 1992 only - Feb 9 0:00 0 - 898# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 899# adopted by same states. 900Rule Brazil 1992 only - Oct 25 0:00 1:00 S 901Rule Brazil 1993 only - Jan 31 0:00 0 - 902# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 903# adopted by same states, plus AM. 904# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 905# web page corrected 2004-01-07) adopted by same states, minus AM. 906# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 907# adopted by same states, plus MT and TO. 908# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 909# adds AL, SE. 910Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 911Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 912Rule Brazil 1996 only - Feb 11 0:00 0 - 913# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 914# adopted by same states, minus AL, SE. 915Rule Brazil 1996 only - Oct 6 0:00 1:00 S 916Rule Brazil 1997 only - Feb 16 0:00 0 - 917# From Daniel C. Sobral (1998-02-12): 918# In 1997, the DS began on October 6. The stated reason was that 919# because international television networks ignored Brazil's policy on DS, 920# they bought the wrong times on satellite for coverage of Pope's visit. 921# This year, the ending date of DS was postponed to March 1 922# to help dealing with the shortages of electric power. 923# 924# Decree 2,317 (1997-09-04), adopted by same states. 925Rule Brazil 1997 only - Oct 6 0:00 1:00 S 926# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 927# (1998-02-10) 928Rule Brazil 1998 only - Mar 1 0:00 0 - 929# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 930# adopted by the same states as before. 931Rule Brazil 1998 only - Oct 11 0:00 1:00 S 932Rule Brazil 1999 only - Feb 21 0:00 0 - 933# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 934# (1999-08-23) adopted by same states. 935# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 936# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 937Rule Brazil 1999 only - Oct 3 0:00 1:00 S 938Rule Brazil 2000 only - Feb 27 0:00 0 - 939# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 940# adopted by the same states as before. 941# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 942# repeals DST in PE and RR, effective 2000-10-15 00:00. 943# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 944# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 945# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 946# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 947Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 948Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 949# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 950# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 951Rule Brazil 2002 only - Nov 3 0:00 1:00 S 952# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 953# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 954Rule Brazil 2003 only - Oct 19 0:00 1:00 S 955# Decree 5,223 (2004-10-01) reestablishes DST in MT. 956# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 957Rule Brazil 2004 only - Nov 2 0:00 1:00 S 958# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 959# adopted by the same states as before. 960Rule Brazil 2005 only - Oct 16 0:00 1:00 S 961# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 962# adopted by the same states as before. 963Rule Brazil 2006 only - Nov 5 0:00 1:00 S 964Rule Brazil 2007 only - Feb 25 0:00 0 - 965# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 966# adopted by the same states as before. 967Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 968# From Frederico A. C. Neves (2008-09-10): 969# Acording to this decree 970# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 971# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 972# </a> 973# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 974# 3rd Feb Sunday. There is an exception on the return date when this is 975# the Carnival Sunday then the return date will be the next Sunday... 976Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 977Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 978Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 979Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 980Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 981Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 982Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 983Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 984Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 985Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 986Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 987Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 988Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 989# From Arthur David Olson (2008-09-29): 990# The next is wrong in some years but is better than nothing. 991Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 992 993# The latest ruleset listed above says that the following states observe DST: 994# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 995 996# Zone NAME GMTOFF RULES FORMAT [UNTIL] 997# 998# Fernando de Noronha (administratively part of PE) 999Zone America/Noronha -2:09:40 - LMT 1914 1000 -2:00 Brazil FN%sT 1990 Sep 17 1001 -2:00 - FNT 1999 Sep 30 1002 -2:00 Brazil FN%sT 2000 Oct 15 1003 -2:00 - FNT 2001 Sep 13 1004 -2:00 Brazil FN%sT 2002 Oct 1 1005 -2:00 - FNT 1006# Other Atlantic islands have no permanent settlement. 1007# These include Trindade and Martin Vaz (administratively part of ES), 1008# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 1009# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 1010# it also included the Penedos. 1011# 1012# Amapa (AP), east Para (PA) 1013# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 1014# The division between east and west Para is the river Xingu. 1015# In the north a very small part from the river Javary (now Jari I guess, 1016# the border with Amapa) to the Amazon, then to the Xingu. 1017Zone America/Belem -3:13:56 - LMT 1914 1018 -3:00 Brazil BR%sT 1988 Sep 12 1019 -3:00 - BRT 1020# 1021# west Para (PA) 1022# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 1023Zone America/Santarem -3:38:48 - LMT 1914 1024 -4:00 Brazil AM%sT 1988 Sep 12 1025 -4:00 - AMT 2008 Jun 24 00:00 1026 -3:00 - BRT 1027# 1028# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 1029# Paraiba (PB) 1030Zone America/Fortaleza -2:34:00 - LMT 1914 1031 -3:00 Brazil BR%sT 1990 Sep 17 1032 -3:00 - BRT 1999 Sep 30 1033 -3:00 Brazil BR%sT 2000 Oct 22 1034 -3:00 - BRT 2001 Sep 13 1035 -3:00 Brazil BR%sT 2002 Oct 1 1036 -3:00 - BRT 1037# 1038# Pernambuco (PE) (except Atlantic islands) 1039Zone America/Recife -2:19:36 - LMT 1914 1040 -3:00 Brazil BR%sT 1990 Sep 17 1041 -3:00 - BRT 1999 Sep 30 1042 -3:00 Brazil BR%sT 2000 Oct 15 1043 -3:00 - BRT 2001 Sep 13 1044 -3:00 Brazil BR%sT 2002 Oct 1 1045 -3:00 - BRT 1046# 1047# Tocantins (TO) 1048Zone America/Araguaina -3:12:48 - LMT 1914 1049 -3:00 Brazil BR%sT 1990 Sep 17 1050 -3:00 - BRT 1995 Sep 14 1051 -3:00 Brazil BR%sT 2003 Sep 24 1052 -3:00 - BRT 1053# 1054# Alagoas (AL), Sergipe (SE) 1055Zone America/Maceio -2:22:52 - LMT 1914 1056 -3:00 Brazil BR%sT 1990 Sep 17 1057 -3:00 - BRT 1995 Oct 13 1058 -3:00 Brazil BR%sT 1996 Sep 4 1059 -3:00 - BRT 1999 Sep 30 1060 -3:00 Brazil BR%sT 2000 Oct 22 1061 -3:00 - BRT 2001 Sep 13 1062 -3:00 Brazil BR%sT 2002 Oct 1 1063 -3:00 - BRT 1064# 1065# Bahia (BA) 1066# There are too many Salvadors elsewhere, so use America/Bahia instead 1067# of America/Salvador. 1068Zone America/Bahia -2:34:04 - LMT 1914 1069 -3:00 Brazil BR%sT 2003 Sep 24 1070 -3:00 - BRT 2011 Oct 16 1071 -3:00 Brazil BR%sT 1072# 1073# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 1074# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 1075# Santa Catarina (SC), Rio Grande do Sul (RS) 1076Zone America/Sao_Paulo -3:06:28 - LMT 1914 1077 -3:00 Brazil BR%sT 1963 Oct 23 00:00 1078 -3:00 1:00 BRST 1964 1079 -3:00 Brazil BR%sT 1080# 1081# Mato Grosso do Sul (MS) 1082Zone America/Campo_Grande -3:38:28 - LMT 1914 1083 -4:00 Brazil AM%sT 1084# 1085# Mato Grosso (MT) 1086Zone America/Cuiaba -3:44:20 - LMT 1914 1087 -4:00 Brazil AM%sT 2003 Sep 24 1088 -4:00 - AMT 2004 Oct 1 1089 -4:00 Brazil AM%sT 1090# 1091# Rondonia (RO) 1092Zone America/Porto_Velho -4:15:36 - LMT 1914 1093 -4:00 Brazil AM%sT 1988 Sep 12 1094 -4:00 - AMT 1095# 1096# Roraima (RR) 1097Zone America/Boa_Vista -4:02:40 - LMT 1914 1098 -4:00 Brazil AM%sT 1988 Sep 12 1099 -4:00 - AMT 1999 Sep 30 1100 -4:00 Brazil AM%sT 2000 Oct 15 1101 -4:00 - AMT 1102# 1103# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1104# The great circle line from Tabatinga to Porto Acre divides 1105# east from west Amazonas. 1106Zone America/Manaus -4:00:04 - LMT 1914 1107 -4:00 Brazil AM%sT 1988 Sep 12 1108 -4:00 - AMT 1993 Sep 28 1109 -4:00 Brazil AM%sT 1994 Sep 22 1110 -4:00 - AMT 1111# 1112# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1113# Eirunepe, Envira, Ipixuna 1114Zone America/Eirunepe -4:39:28 - LMT 1914 1115 -5:00 Brazil AC%sT 1988 Sep 12 1116 -5:00 - ACT 1993 Sep 28 1117 -5:00 Brazil AC%sT 1994 Sep 22 1118 -5:00 - ACT 2008 Jun 24 00:00 1119 -4:00 - AMT 1120# 1121# Acre (AC) 1122Zone America/Rio_Branco -4:31:12 - LMT 1914 1123 -5:00 Brazil AC%sT 1988 Sep 12 1124 -5:00 - ACT 2008 Jun 24 00:00 1125 -4:00 - AMT 1126 1127# Chile 1128 1129# From Eduardo Krell (1995-10-19): 1130# The law says to switch to DST at midnight [24:00] on the second SATURDAY 1131# of October.... The law is the same for March and October. 1132# (1998-09-29): 1133# Because of the drought this year, the government decided to go into 1134# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1135# (unless there's another dry season next year, I guess). 1136 1137# From Julio I. Pacheco Troncoso (1999-03-18): 1138# Because of the same drought, the government decided to end DST later, 1139# on April 3, (one-time change). 1140 1141# From Oscar van Vlijmen (2006-10-08): 1142# http://www.horaoficial.cl/cambio.htm 1143 1144# From Jesper Norgaard Welen (2006-10-08): 1145# I think that there are some obvious mistakes in the suggested link 1146# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1147# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1148# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1149# anyhow it clears up some doubts too. 1150 1151# From Paul Eggert (2006-12-27): 1152# The following data for Chile and America/Santiago are from 1153# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1154# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1155# & Pottenger, except with DST transitions after 1932 cloned from 1156# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1157# but we have no other source. 1158 1159# From German Poo-Caaman~o (2008-03-03): 1160# Due to drought, Chile extends Daylight Time in three weeks. This 1161# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1162# and Saturday 3/29 at 22:00 for Pacific/Easter) 1163# The Supreme Decree is located at 1164# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1165# http://www.shoa.cl/servicios/supremo316.pdf 1166# </a> 1167# and the instructions for 2008 are located in: 1168# <a href="http://www.horaoficial.cl/cambio.htm"> 1169# http://www.horaoficial.cl/cambio.htm 1170# </a>. 1171 1172# From Jose Miguel Garrido (2008-03-05): 1173# ... 1174# You could see the announces of the change on 1175# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1176# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1177# </a>. 1178 1179# From Angel Chiang (2010-03-04): 1180# Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1181# <a href="http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098"> 1182# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1183# </a> 1184# (in Spanish, last paragraph). 1185# 1186# This is breaking news. There should be more information available later. 1187 1188# From Arthur Daivd Olson (2010-03-06): 1189# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1190 1191# From Glenn Eychaner (2011-03-02): [geychaner@mac.com] 1192# It appears that the Chilean government has decided to postpone the 1193# change from summer time to winter time again, by three weeks to April 1194# 2nd: 1195# <a href="http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651"> 1196# http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651 1197# </a> 1198# 1199# This is not yet reflected in the offical "cambio de hora" site, but 1200# probably will be soon: 1201# <a href="http://www.horaoficial.cl/cambio.htm"> 1202# http://www.horaoficial.cl/cambio.htm 1203# </a> 1204 1205# From Arthur David Olson (2011-03-02): 1206# The emol.com article mentions a water shortage as the cause of the 1207# postponement, which may mean that it's not a permanent change. 1208 1209# From Glenn Eychaner (2011-03-28): 1210# The article: 1211# <a href="http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}"> 1212# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1213# </a> 1214# 1215# In English: 1216# Chile's clocks will go back an hour this year on the 7th of May instead 1217# of this Saturday. They will go forward again the 3rd Saturday in 1218# August, not in October as they have since 1968. This is a pilot plan 1219# which will be reevaluated in 2012. 1220 1221# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1222Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1223Rule Chile 1928 1932 - Apr 1 0:00 0 - 1224Rule Chile 1942 only - Jun 1 4:00u 0 - 1225Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1226Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1227Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1228Rule Chile 1947 only - Apr 1 4:00u 0 - 1229Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1230Rule Chile 1969 only - Mar 30 3:00u 0 - 1231Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1232Rule Chile 1970 only - Mar 29 3:00u 0 - 1233Rule Chile 1971 only - Mar 14 3:00u 0 - 1234Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1235Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1236Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1237Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1238Rule Chile 1987 only - Apr 12 3:00u 0 - 1239Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1240Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1241Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1242Rule Chile 1990 only - Mar 18 3:00u 0 - 1243Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1244Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1245Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1246Rule Chile 1997 only - Mar 30 3:00u 0 - 1247Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1248Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1249Rule Chile 1999 only - Apr 4 3:00u 0 - 1250Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1251Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1252Rule Chile 2012 max - Oct Sun>=9 4:00u 1:00 S 1253Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1254# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1255# which is used below in specifying the transition. 1256Rule Chile 2008 only - Mar 30 3:00u 0 - 1257Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1258Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1259Rule Chile 2011 only - May Sun>=2 3:00u 0 - 1260Rule Chile 2012 max - Mar Sun>=9 3:00u 0 - 1261# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1262# (1996-09) says 1998-03-08. Ignore these. 1263# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1264Zone America/Santiago -4:42:46 - LMT 1890 1265 -4:42:46 - SMT 1910 # Santiago Mean Time 1266 -5:00 - CLT 1916 Jul 1 # Chile Time 1267 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1268 -4:00 - CLT 1919 Jul 1 # Chile Time 1269 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1270 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1271 -4:00 Chile CL%sT 1272Zone Pacific/Easter -7:17:44 - LMT 1890 1273 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1274 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1275 -6:00 Chile EAS%sT 1276# 1277# Sala y Gomez Island is like Pacific/Easter. 1278# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1279# San Felix, and Antarctic bases, are like America/Santiago. 1280 1281# Colombia 1282# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1283Rule CO 1992 only - May 3 0:00 1:00 S 1284Rule CO 1993 only - Apr 4 0:00 0 - 1285# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1286Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1287 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1288 -5:00 CO CO%sT # Colombia Time 1289# Malpelo, Providencia, San Andres 1290# no information; probably like America/Bogota 1291 1292# Curacao 1293# 1294# From Paul Eggert (2006-03-22): 1295# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1296# -4:00 since standard time was introduced on 1912-03-02; and that 1297# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1298# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1299# Saba Island has been like Curacao. 1300# This all predates our 1970 cutoff, though. 1301# 1302# By July 2007 Curacao and St Maarten are planned to become 1303# associated states within the Netherlands, much like Aruba; 1304# Bonaire, Saba and St Eustatius would become directly part of the 1305# Netherlands as Kingdom Islands. This won't affect their time zones 1306# though, as far as we know. 1307# 1308# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1309Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1310 -4:30 - ANT 1965 # Netherlands Antilles Time 1311 -4:00 - AST 1312 1313# From Arthur David Olson (2011-06-15): 1314# At least for now, use links for places with new iso3166 codes. 1315# The name "Lower Prince's Quarter" is both longer than fourteen charaters 1316# and contains an apostrophe; use "Lower_Princes" below. 1317 1318Link America/Curacao America/Lower_Princes # Sint Maarten 1319Link America/Curacao America/Kralendijk # Bonaire, Sint Estatius and Saba 1320 1321# Ecuador 1322# 1323# From Paul Eggert (2007-03-04): 1324# Apparently Ecuador had a failed experiment with DST in 1992. 1325# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1326# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1327# talk about "hora Sixto". Leave this alone for now, as we have no data. 1328# 1329# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1330Zone America/Guayaquil -5:19:20 - LMT 1890 1331 -5:14:00 - QMT 1931 # Quito Mean Time 1332 -5:00 - ECT # Ecuador Time 1333Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1334 -5:00 - ECT 1986 1335 -6:00 - GALT # Galapagos Time 1336 1337# Falklands 1338 1339# From Paul Eggert (2006-03-22): 1340# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1341# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1342 1343# From Falkland Islands Government Office, London (2001-01-22) 1344# via Jesper Norgaard: 1345# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1346# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1347# September. It is anticipated that the clocks will revert back at 2 1348# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1349# Sunday 1 September. 1350 1351# From Rives McDow (2001-02-13): 1352# 1353# I have communicated several times with people there, and the last 1354# time I had communications that was helpful was in 1998. Here is 1355# what was said then: 1356# 1357# "The general rule was that Stanley used daylight saving and the Camp 1358# did not. However for various reasons many people in the Camp have 1359# started to use daylight saving (known locally as 'Stanley Time') 1360# There is no rule as to who uses daylight saving - it is a matter of 1361# personal choice and so it is impossible to draw a map showing who 1362# uses it and who does not. Any list would be out of date as soon as 1363# it was produced. This year daylight saving ended on April 18/19th 1364# and started again on September 12/13th. I do not know what the rule 1365# is, but can find out if you like. We do not change at the same time 1366# as UK or Chile." 1367# 1368# I did have in my notes that the rule was "Second Saturday in Sep at 1369# 0:00 until third Saturday in Apr at 0:00". I think that this does 1370# not agree in some cases with Shanks; is this true? 1371# 1372# Also, there is no mention in the list that some areas in the 1373# Falklands do not use DST. I have found in my communications there 1374# that these areas are on the western half of East Falkland and all of 1375# West Falkland. Stanley is the only place that consistently observes 1376# DST. Again, as in other places in the world, the farmers don't like 1377# it. West Falkland is almost entirely sheep farmers. 1378# 1379# I know one lady there that keeps a list of which farm keeps DST and 1380# which doesn't each year. She runs a shop in Stanley, and says that 1381# the list changes each year. She uses it to communicate to her 1382# customers, catching them when they are home for lunch or dinner. 1383 1384# From Paul Eggert (2001-03-05): 1385# For now, we'll just record the time in Stanley, since we have no 1386# better info. 1387 1388# From Steffen Thorsen (2011-04-01): 1389# The Falkland Islands will not turn back clocks this winter, but stay on 1390# daylight saving time. 1391# 1392# One source: 1393# <a href="http://www.falklandnews.com/public/story.cfm?get=5914&source=3"> 1394# http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1395# </a> 1396# 1397# We have gotten this confirmed by a clerk of the legislative assembly: 1398# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1399# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1400# hours) on the first Sunday of September at 0200hrs. 1401# 1402# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1403# will not revert to local mean time, but clocks will remain on Summer 1404# time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1405# change to local time following the trial period will be notified. 1406# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1407Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1408Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1409Rule Falk 1939 only - Oct 1 0:00 1:00 S 1410Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1411Rule Falk 1943 only - Jan 1 0:00 0 - 1412Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1413Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1414Rule Falk 1984 only - Sep 16 0:00 1:00 S 1415Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1416Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1417Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1418Rule Falk 2012 max - Apr Sun>=15 2:00 0 - 1419Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1420# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1421Zone Atlantic/Stanley -3:51:24 - LMT 1890 1422 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1423 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1424 -3:00 Falk FK%sT 1985 Sep 15 1425 -4:00 Falk FK%sT 1426 1427# French Guiana 1428# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1429Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1430 -4:00 - GFT 1967 Oct # French Guiana Time 1431 -3:00 - GFT 1432 1433# Guyana 1434# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1435Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1436 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1437 -3:45 - GYT 1975 Jul 31 # Guyana Time 1438 -3:00 - GYT 1991 1439# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1440 -4:00 - GYT 1441 1442# Paraguay 1443# From Paul Eggert (2006-03-22): 1444# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1445# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1446# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1447# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1448Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1449Rule Para 1975 1978 - Mar 1 0:00 0 - 1450Rule Para 1979 1991 - Apr 1 0:00 0 - 1451Rule Para 1989 only - Oct 22 0:00 1:00 S 1452Rule Para 1990 only - Oct 1 0:00 1:00 S 1453Rule Para 1991 only - Oct 6 0:00 1:00 S 1454Rule Para 1992 only - Mar 1 0:00 0 - 1455Rule Para 1992 only - Oct 5 0:00 1:00 S 1456Rule Para 1993 only - Mar 31 0:00 0 - 1457Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1458Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1459Rule Para 1996 only - Mar 1 0:00 0 - 1460# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1461# From Steffen Thorsen (2000-10-02): 1462# I have three independent reports that Paraguay changed to DST this Sunday 1463# (10-01). 1464# 1465# Translated by Gwillim Law (2001-02-27) from 1466# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1467# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1468# </a>: 1469# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1470# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1471# system has been operating for several years. Formerly there was a separate 1472# decree each year; the new law has the same effect, but permanently. Every 1473# year, the time will change on the first Sunday of October; likewise, the 1474# clock will be set back on the first Sunday of March. 1475# 1476Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1477# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1478Rule Para 1997 only - Feb lastSun 0:00 0 - 1479# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1480# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1481Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1482# From Rives McDow (2002-02-28): 1483# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1484# dst method to be from the first Sunday in September to the first Sunday in 1485# April. 1486Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1487Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1488# 1489# From Jesper Norgaard Welen (2005-01-02): 1490# There are several sources that claim that Paraguay made 1491# a timezone rule change in autumn 2004. 1492# From Steffen Thorsen (2005-01-05): 1493# Decree 1,867 (2004-03-05) 1494# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1495# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1496Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1497Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1498# From Carlos Raul Perasso (2010-02-18): 1499# By decree number 3958 issued yesterday ( 1500# <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> 1501# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1502# </a> 1503# ) 1504# Paraguay changes its DST schedule, postponing the March rule to April and 1505# modifying the October date. The decree reads: 1506# ... 1507# Art. 1. It is hereby established that from the second Sunday of the month of 1508# April of this year (2010), the official time is to be set back 60 minutes, 1509# and that on the first Sunday of the month of October, it is to be set 1510# forward 60 minutes, in all the territory of the Paraguayan Republic. 1511# ... 1512Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1513Rule Para 2010 max - Apr Sun>=8 0:00 0 - 1514 1515# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1516Zone America/Asuncion -3:50:40 - LMT 1890 1517 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1518 -4:00 - PYT 1972 Oct # Paraguay Time 1519 -3:00 - PYT 1974 Apr 1520 -4:00 Para PY%sT 1521 1522# Peru 1523# 1524# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1525# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1526# When we were in Peru in 1985-1986, they apparently switched over 1527# sometime between December 29 and January 3 while we were on the Amazon. 1528# 1529# From Paul Eggert (2006-03-22): 1530# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1531 1532# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1533Rule Peru 1938 only - Jan 1 0:00 1:00 S 1534Rule Peru 1938 only - Apr 1 0:00 0 - 1535Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1536Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1537Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1538Rule Peru 1986 1987 - Apr 1 0:00 0 - 1539Rule Peru 1990 only - Jan 1 0:00 1:00 S 1540Rule Peru 1990 only - Apr 1 0:00 0 - 1541# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1542Rule Peru 1994 only - Jan 1 0:00 1:00 S 1543Rule Peru 1994 only - Apr 1 0:00 0 - 1544# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1545Zone America/Lima -5:08:12 - LMT 1890 1546 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1547 -5:00 Peru PE%sT # Peru Time 1548 1549# South Georgia 1550# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1551Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1552 -2:00 - GST # South Georgia Time 1553 1554# South Sandwich Is 1555# uninhabited; scientific personnel have wintered 1556 1557# Suriname 1558# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1559Zone America/Paramaribo -3:40:40 - LMT 1911 1560 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1561 -3:40:36 - PMT 1945 Oct # The capital moved? 1562 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1563 -3:30 - SRT 1984 Oct # Suriname Time 1564 -3:00 - SRT 1565 1566# Trinidad and Tobago 1567# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1568Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1569 -4:00 - AST 1570 1571# Uruguay 1572# From Paul Eggert (1993-11-18): 1573# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1574# From Shanks & Pottenger: 1575# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1576# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1577Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1578Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1579Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1580Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1581# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1582Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1583Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1584Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1585# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1586Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1587# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1588# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1589Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1590Rule Uruguay 1942 only - Jan 1 0:00 0 - 1591Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1592Rule Uruguay 1943 only - Mar 14 0:00 0 - 1593Rule Uruguay 1959 only - May 24 0:00 1:00 S 1594Rule Uruguay 1959 only - Nov 15 0:00 0 - 1595Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1596Rule Uruguay 1960 only - Mar 6 0:00 0 - 1597Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1598Rule Uruguay 1965 only - Sep 26 0:00 0 - 1599Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1600Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1601Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1602Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1603Rule Uruguay 1972 only - Aug 15 0:00 0 - 1604Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1605Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1606Rule Uruguay 1976 only - Oct 1 0:00 0 - 1607Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1608Rule Uruguay 1978 only - Apr 1 0:00 0 - 1609Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1610Rule Uruguay 1980 only - May 1 0:00 0 - 1611Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1612Rule Uruguay 1988 only - Mar 14 0:00 0 - 1613Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1614Rule Uruguay 1989 only - Mar 12 0:00 0 - 1615Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1616# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1617# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1618Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1619Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1620Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1621Rule Uruguay 1993 only - Feb 28 0:00 0 - 1622# From Eduardo Cota (2004-09-20): 1623# The uruguayan government has decreed a change in the local time.... 1624# http://www.presidencia.gub.uy/decretos/2004091502.htm 1625Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1626# From Steffen Thorsen (2005-03-11): 1627# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1628# save energy ... it was postponed two weeks.... 1629# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1630Rule Uruguay 2005 only - Mar 27 2:00 0 - 1631# From Eduardo Cota (2005-09-27): 1632# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1633# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1634# 02:00 local time, official time in Uruguay will be at GMT -2. 1635Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1636Rule Uruguay 2006 only - Mar 12 2:00 0 - 1637# From Jesper Norgaard Welen (2006-09-06): 1638# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1639Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1640Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1641# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1642Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1643 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1644 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1645 -3:00 Uruguay UY%sT 1646 1647# Venezuela 1648# 1649# From John Stainforth (2007-11-28): 1650# ... the change for Venezuela originally expected for 2007-12-31 has 1651# been brought forward to 2007-12-09. The official announcement was 1652# published today in the "Gaceta Oficial de la Republica Bolivariana 1653# de Venezuela, numero 38.819" (official document for all laws or 1654# resolution publication) 1655# http://www.globovision.com/news.php?nid=72208 1656 1657# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1658Zone America/Caracas -4:27:44 - LMT 1890 1659 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1660 -4:30 - VET 1965 # Venezuela Time 1661 -4:00 - VET 2007 Dec 9 03:00 1662 -4:30 - VET 1663
