1# This file is in the public domain, so clarified as of 2# 2009-05-17 by Arthur David Olson. 3 4# This file 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@iana.org for general use in the future). For more, please see 7# the file CONTRIBUTING in the tz distribution. 8 9# From Paul Eggert (2016-12-05): 10# 11# Unless otherwise specified, the source for data through 1990 is: 12# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 13# San Diego: ACS Publications, Inc. (2003). 14# Unfortunately this book contains many errors and cites no sources. 15# 16# Many years ago Gwillim Law wrote that a good source 17# for time zone data was the International Air Transport 18# Association's Standard Schedules Information Manual (IATA SSIM), 19# published semiannually. Law sent in several helpful summaries 20# of the IATA's data after 1990. Except where otherwise noted, 21# IATA SSIM is the source for entries after 1990. 22# 23# For data circa 1899, a common source is: 24# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 25# https://www.jstor.org/stable/1774359 26# 27# These tables use numeric abbreviations like -03 and -0330 for 28# integer hour and minute UT offsets. Although earlier editions used 29# alphabetic time zone abbreviations, these abbreviations were 30# invented and did not reflect common practice. 31 32############################################################################### 33 34############################################################################### 35 36# Argentina 37 38# From Bob Devine (1988-01-28): 39# Argentina: first Sunday in October to first Sunday in April since 1976. 40# Double Summer time from 1969 to 1974. Switches at midnight. 41 42# From U. S. Naval Observatory (1988-01-19): 43# ARGENTINA 3 H BEHIND UTC 44 45# From Hernan G. Otero (1995-06-26): 46# I am sending modifications to the Argentine time zone table... 47# AR was chosen because they are the ISO letters that represent Argentina. 48 49# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 50Rule Arg 1930 only - Dec 1 0:00 1:00 S 51Rule Arg 1931 only - Apr 1 0:00 0 - 52Rule Arg 1931 only - Oct 15 0:00 1:00 S 53Rule Arg 1932 1940 - Mar 1 0:00 0 - 54Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 55Rule Arg 1940 only - Jul 1 0:00 1:00 S 56Rule Arg 1941 only - Jun 15 0:00 0 - 57Rule Arg 1941 only - Oct 15 0:00 1:00 S 58Rule Arg 1943 only - Aug 1 0:00 0 - 59Rule Arg 1943 only - Oct 15 0:00 1:00 S 60Rule Arg 1946 only - Mar 1 0:00 0 - 61Rule Arg 1946 only - Oct 1 0:00 1:00 S 62Rule Arg 1963 only - Oct 1 0:00 0 - 63Rule Arg 1963 only - Dec 15 0:00 1:00 S 64Rule Arg 1964 1966 - Mar 1 0:00 0 - 65Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 66Rule Arg 1967 only - Apr 2 0:00 0 - 67Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 68Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 69Rule Arg 1974 only - Jan 23 0:00 1:00 S 70Rule Arg 1974 only - May 1 0:00 0 - 71Rule Arg 1988 only - Dec 1 0:00 1:00 S 72# 73# From Hernan G. Otero (1995-06-26): 74# These corrections were contributed by InterSoft Argentina S.A., 75# obtaining the data from the: 76# Talleres de Hidrografía Naval Argentina 77# (Argentine Naval Hydrography Institute) 78Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 79Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 80# 81# From Hernan G. Otero (1995-06-26): 82# From this moment on, the law that mandated the daylight saving 83# time corrections was derogated and no more modifications 84# to the time zones (for daylight saving) are now made. 85# 86# From Rives McDow (2000-01-10): 87# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 88# which did not result in the switch of a time zone, as they stayed 9 hours 89# from the International Date Line. 90Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 91# From Paul Eggert (2007-12-28): 92# DST was set to expire on March 5, not March 3, but since it was converted 93# to standard time on March 3 it's more convenient for us to pretend that 94# it ended on March 3. 95Rule Arg 2000 only - Mar 3 0:00 0 - 96# 97# From Peter Gradelski via Steffen Thorsen (2000-03-01): 98# We just checked with our São Paulo office and they say the government of 99# Argentina decided not to become one of the countries that go on or off DST. 100# So Buenos Aires should be -3 hours from GMT at all times. 101# 102# From Fabián L. Arce Jofré (2000-04-04): 103# The law that claimed DST for Argentina was derogated by President Fernando 104# de la Rúa on March 2, 2000, because it would make people spend more energy 105# in the winter time, rather than less. The change took effect on March 3. 106# 107# From Mariano Absatz (2001-06-06): 108# one of the major newspapers here in Argentina said that the 1999 109# Timezone Law (which never was effectively applied) will (would?) be 110# in effect.... The article is at 111# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 112# ... The Law itself is "Ley No. 25155", sanctioned on 1999-08-25, enacted 113# 1999-09-17, and published 1999-09-21. The official publication is at: 114# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 115# Regretfully, you have to subscribe (and pay) for the on-line version.... 116# 117# (2001-06-12): 118# the timezone for Argentina will not change next Sunday. 119# Apparently it will do so on Sunday 24th.... 120# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 121# 122# (2001-06-25): 123# Last Friday (yes, the last working day before the date of the change), the 124# Senate annulled the 1999 law that introduced the changes later postponed. 125# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 126# It remains the vote of the Deputies..., but it will be the same.... 127# This kind of things had always been done this way in Argentina. 128# We are still -03:00 all year round in all of the country. 129# 130# From Steffen Thorsen (2007-12-21): 131# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 132# all of the country (all Zone-entries) are affected. News reports like 133# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 134# that Argentina will use DST next year as well, from October to 135# March, although exact rules are not given. 136# 137# From Jesper Nørgaard Welen (2007-12-26) 138# The last hurdle of Argentina DST is over, the proposal was approved in 139# the lower chamber too (Diputados) with a vote 192 for and 2 against. 140# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 141# the original scanned proposal, where the dates and the zero hours are 142# clear and unambiguous...This is the article about final approval: 143# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 144# 145# From Paul Eggert (2007-12-22): 146# For dates after mid-2008, the following rules are my guesses and 147# are quite possibly wrong, but are more likely than no DST at all. 148 149# From Alexander Krivenyshev (2008-09-05): 150# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 151# Argentina will start DST on Sunday October 19, 2008. 152# 153# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 154# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 155 156# From Juan Manuel Docile in https://bugs.gentoo.org/240339 (2008-10-07) 157# via Rodrigo Severo: 158# Argentinian law No. 25.155 is no longer valid. 159# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 160# The new one is law No. 26.350 161# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 162# So there is no summer time in Argentina for now. 163 164# From Mariano Absatz (2008-10-20): 165# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST 166# in Argentina from 2008-10-19 until 2009-03-15. 167# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 168# 169 170# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 171# 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La 172# Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego 173# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 174# 175# Press release 235 dated Saturday October 18th, from the Government of the 176# Province of Jujuy saying it will not apply DST either (even when it was not 177# included in Decree 1705/2008). 178# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 179 180# From fullinet (2009-10-18): 181# As announced in 182# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 183# (an official .gob.ar) under title: "Sin Cambio de Hora" 184# (English: "No hour change"). 185# 186# "Por el momento, el Gobierno Nacional resolvió no modificar la hora 187# oficial, decisión que estaba en estudio para su implementación el 188# domingo 18 de octubre. Desde el Ministerio de Planificación se anunció 189# que la Argentina hoy, en estas condiciones meteorológicas, no necesita 190# la modificación del huso horario, ya que 2009 nos encuentra con 191# crecimiento en la producción y distribución energética." 192 193Rule Arg 2007 only - Dec 30 0:00 1:00 S 194Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 195Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 196 197# From Mariano Absatz (2004-05-21): 198# Today it was officially published that the Province of Mendoza is changing 199# its timezone this winter... starting tomorrow night.... 200# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 201# From Paul Eggert (2004-05-24): 202# It's Law No. 7,210. This change is due to a public power emergency, so for 203# now we'll assume it's for this year only. 204# 205# From Paul Eggert (2014-08-09): 206# Hora de verano para la República Argentina 207# http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html 208# says that standard time in Argentina from 1894-10-31 209# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 210# over Shanks & Pottenger. 211# 212# From Mariano Absatz (2004-06-05): 213# These media articles from a major newspaper mostly cover the current state: 214# http://www.lanacion.com.ar/04/05/27/de_604825.asp 215# http://www.lanacion.com.ar/04/05/28/de_605203.asp 216# 217# The following eight (8) provinces pulled clocks back to UTC-04:00 at 218# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 219# Apparently, all nine provinces would go back to UTC-03:00 at the same 220# time in October 17th. 221# 222# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 223# Tierra del Fuego, Tucumán. 224# 225# From Mariano Absatz (2004-06-14): 226# ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00 227# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 228# annoyance with the change is much higher than the power savings obtained.... 229# 230# From Gwillim Law (2004-06-14): 231# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 232# "The time change in Tierra del Fuego was a conflicted decision from 233# the start. The government had decreed that the measure would take 234# effect on June 1, but a normative error forced the new time to begin 235# three days earlier, from a Saturday to a Sunday.... 236# Our understanding was that the change was originally scheduled to take place 237# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 238# provinces). Sunday was May 30, only two days earlier. So the article 239# contains a contradiction. I would give more credence to the Saturday/Sunday 240# date than the "three days earlier" phrase, and conclude that Tierra del 241# Fuego set its clocks back at 2004-05-30 00:00. 242# 243# From Steffen Thorsen (2004-10-05): 244# The previous law 7210 which changed the province of Mendoza's time zone 245# back in May have been modified slightly in a new law 7277, which set the 246# new end date to 2004-09-26 (original date was 2004-10-17). 247# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 248# 249# From Mariano Absatz (2004-10-05): 250# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 251# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 252# at midnight between Saturday, July 24th and Sunday, July 25th.... 253# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 254# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 255# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 256 257# From Alex Krivenyshev (2008-01-17): 258# Here are articles that Argentina Province San Luis is planning to end DST 259# as earlier as upcoming Monday January 21, 2008 or February 2008: 260# 261# Provincia argentina retrasa reloj y marca diferencia con resto del país 262# (Argentine Province delayed clock and mark difference with the rest of the 263# country) 264# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 265# 266# Es inminente que en San Luis atrasen una hora los relojes 267# (It is imminent in San Luis clocks one hour delay) 268# https://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html 269# http://www.worldtimezone.com/dst_news/dst_news_argentina02.html 270 271# From Jesper Nørgaard Welen (2008-01-18): 272# The page of the San Luis provincial government 273# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 274# confirms what Alex Krivenyshev has earlier sent to the tz 275# emailing list about that San Luis plans to return to standard 276# time much earlier than the rest of the country. It also 277# confirms that upon request the provinces San Juan and Mendoza 278# refused to follow San Luis in this change. 279# 280# The change is supposed to take place Monday the 21st at 0:00 281# hours. As far as I understand it if this goes ahead, we need 282# a new timezone for San Luis (although there are also documented 283# independent changes in the southamerica file of San Luis in 284# 1990 and 1991 which has not been confirmed). 285 286# From Jesper Nørgaard Welen (2008-01-25): 287# Unfortunately the below page has become defunct, about the San Luis 288# time change. Perhaps because it now is part of a group of pages "Most 289# important pages of 2008." 290# 291# You can use 292# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 293# instead it seems. Or use "Buscador" from the main page of the San Luis 294# government, and fill in "huso" and click OK, and you will get 3 pages 295# from which the first one is identical to the above. 296 297# From Mariano Absatz (2008-01-28): 298# I can confirm that the Province of San Luis (and so far only that 299# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 300# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 301# 1 hour), and they intend to keep UTC-3 as their timezone all year round 302# (that is, unless they change their mind any minute now). 303# 304# So we'll have to add yet another city to 'southamerica' (I think San 305# Luis city is the mos populated city in the Province, so it'd be 306# America/Argentina/San_Luis... of course I can't remember if San Luis's 307# history of particular changes goes along with Mendoza or San Juan :-( 308# (I only remember not being able to collect hard facts about San Luis 309# back in 2004, when these provinces changed to UTC-4 for a few days, I 310# mailed them personally and never got an answer). 311 312# From Paul Eggert (2014-08-12): 313# Unless otherwise specified, data entries are from Shanks & Pottenger through 314# 1992, from the IATA otherwise. As noted below, Shanks & Pottenger say that 315# America/Cordoba split into 6 subregions during 1991/1992, one of which 316# was America/San_Luis, but we haven't verified this yet so for now we'll 317# keep America/Cordoba a single region rather than splitting it into the 318# other 5 subregions. 319 320# From Mariano Absatz (2009-03-13): 321# Yesterday (with our usual 2-day notice) the Province of San Luis 322# decided that next Sunday instead of "staying" @utc-03:00 they will go 323# to utc-04:00 until the second Saturday in October... 324# 325# The press release is at 326# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 327# (I couldn't find the decree, but www.sanluis.gov.ar 328# is the official page for the Province Government.) 329# 330# There's also a note in only one of the major national papers ... 331# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 332# 333# The press release says [quick and dirty translation]: 334# ... announced that next Sunday, at 00:00, Puntanos (the San Luis 335# inhabitants) will have to turn back one hour their clocks 336# 337# Since then, San Luis will establish its own Province timezone. Thus, 338# during 2009, this timezone change will run from 00:00 the third Sunday 339# in March until 24:00 of the second Saturday in October. 340 341# From Mariano Absatz (2009-10-16): 342# ...the Province of San Luis is a case in itself. 343# 344# The Law at 345# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 346# is ambiguous because establishes a calendar from the 2nd Sunday in 347# October at 0:00 thru the 2nd Saturday in March at 24:00 and the 348# complement of that starting on the 2nd Sunday of March at 0:00 and 349# ending on the 2nd Saturday of March at 24:00. 350# 351# This clearly breaks every time the 1st of March or October is a Sunday. 352# 353# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 354# Sunday of October and March. 355# 356# The problem is that the changes in the rest of the Provinces that did 357# change in 2007/2008, were made according to the Federal Law and Decrees 358# that did so on the 3rd Sunday of October and March. 359# 360# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 361# (October 11th) at 0:00. 362# 363# So I guess a new set of rules, besides "Arg", must be made and the last 364# America/Argentina/San_Luis entries should change to use these... 365# ... 366 367# From Alexander Krivenyshev (2010-04-09): 368# According to news reports from El Diario de la República Province San 369# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 370# after April 11, 2010 - will continue to have same time as rest of 371# Argentina (UTC-3) (no DST). 372# 373# Confirmaron la prórroga del huso horario de verano (Spanish) 374# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 375# or (some English translation): 376# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 377 378# From Mariano Absatz (2010-04-12): 379# yes...I can confirm this...and given that San Luis keeps calling 380# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 381# rules...San Luis is still using "Western ARgentina Time" and it got 382# stuck on Summer daylight savings time even though the summer is over. 383 384# From Paul Eggert (2013-09-05): 385# Perhaps San Luis operates on the legal fiction that it is at -04 386# with perpetual summer time, but ordinary usage typically seems to 387# just say it's at -03; see, for example, 388# https://es.wikipedia.org/wiki/Hora_oficial_argentina 389# We've documented similar situations as being plain changes to 390# standard time, so let's do that here too. This does not change UTC 391# offsets, only tm_isdst and the time zone abbreviations. One minor 392# plus is that this silences a zic complaint that there's no POSIX TZ 393# setting for time stamps past 2038. 394 395# From Paul Eggert (2013-02-21): 396# Milne says Córdoba time was -4:16:48.2. Round to the nearest second. 397 398# Zone NAME GMTOFF RULES FORMAT [UNTIL] 399# 400# Buenos Aires (BA), Capital Federal (CF), 401Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 402 -4:16:48 - CMT 1920 May # Córdoba Mean Time 403 -4:00 - -04 1930 Dec 404 -4:00 Arg -04/-03 1969 Oct 5 405 -3:00 Arg -03/-02 1999 Oct 3 406 -4:00 Arg -04/-03 2000 Mar 3 407 -3:00 Arg -03/-02 408# 409# Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), 410# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 411# 412# Shanks & Pottenger also make the following claims, which we haven't verified: 413# - Formosa switched to -3:00 on 1991-01-07. 414# - Misiones switched to -3:00 on 1990-12-29. 415# - Chaco switched to -3:00 on 1991-01-04. 416# - Santiago del Estero switched to -4:00 on 1991-04-01, 417# then to -3:00 on 1991-04-26. 418# 419Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 420 -4:16:48 - CMT 1920 May 421 -4:00 - -04 1930 Dec 422 -4:00 Arg -04/-03 1969 Oct 5 423 -3:00 Arg -03/-02 1991 Mar 3 424 -4:00 - -04 1991 Oct 20 425 -3:00 Arg -03/-02 1999 Oct 3 426 -4:00 Arg -04/-03 2000 Mar 3 427 -3:00 Arg -03/-02 428# 429# Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) 430Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 431 -4:16:48 - CMT 1920 May 432 -4:00 - -04 1930 Dec 433 -4:00 Arg -04/-03 1969 Oct 5 434 -3:00 Arg -03/-02 1991 Mar 3 435 -4:00 - -04 1991 Oct 20 436 -3:00 Arg -03/-02 1999 Oct 3 437 -4:00 Arg -04/-03 2000 Mar 3 438 -3:00 Arg -03/-02 2008 Oct 18 439 -3:00 - -03 440# 441# Tucumán (TM) 442Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 443 -4:16:48 - CMT 1920 May 444 -4:00 - -04 1930 Dec 445 -4:00 Arg -04/-03 1969 Oct 5 446 -3:00 Arg -03/-02 1991 Mar 3 447 -4:00 - -04 1991 Oct 20 448 -3:00 Arg -03/-02 1999 Oct 3 449 -4:00 Arg -04/-03 2000 Mar 3 450 -3:00 - -03 2004 Jun 1 451 -4:00 - -04 2004 Jun 13 452 -3:00 Arg -03/-02 453# 454# La Rioja (LR) 455Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 456 -4:16:48 - CMT 1920 May 457 -4:00 - -04 1930 Dec 458 -4:00 Arg -04/-03 1969 Oct 5 459 -3:00 Arg -03/-02 1991 Mar 1 460 -4:00 - -04 1991 May 7 461 -3:00 Arg -03/-02 1999 Oct 3 462 -4:00 Arg -04/-03 2000 Mar 3 463 -3:00 - -03 2004 Jun 1 464 -4:00 - -04 2004 Jun 20 465 -3:00 Arg -03/-02 2008 Oct 18 466 -3:00 - -03 467# 468# San Juan (SJ) 469Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 470 -4:16:48 - CMT 1920 May 471 -4:00 - -04 1930 Dec 472 -4:00 Arg -04/-03 1969 Oct 5 473 -3:00 Arg -03/-02 1991 Mar 1 474 -4:00 - -04 1991 May 7 475 -3:00 Arg -03/-02 1999 Oct 3 476 -4:00 Arg -04/-03 2000 Mar 3 477 -3:00 - -03 2004 May 31 478 -4:00 - -04 2004 Jul 25 479 -3:00 Arg -03/-02 2008 Oct 18 480 -3:00 - -03 481# 482# Jujuy (JY) 483Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 484 -4:16:48 - CMT 1920 May 485 -4:00 - -04 1930 Dec 486 -4:00 Arg -04/-03 1969 Oct 5 487 -3:00 Arg -03/-02 1990 Mar 4 488 -4:00 - -04 1990 Oct 28 489 -4:00 1:00 -03 1991 Mar 17 490 -4:00 - -04 1991 Oct 6 491 -3:00 1:00 -02 1992 492 -3:00 Arg -03/-02 1999 Oct 3 493 -4:00 Arg -04/-03 2000 Mar 3 494 -3:00 Arg -03/-02 2008 Oct 18 495 -3:00 - -03 496# 497# Catamarca (CT), Chubut (CH) 498Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 499 -4:16:48 - CMT 1920 May 500 -4:00 - -04 1930 Dec 501 -4:00 Arg -04/-03 1969 Oct 5 502 -3:00 Arg -03/-02 1991 Mar 3 503 -4:00 - -04 1991 Oct 20 504 -3:00 Arg -03/-02 1999 Oct 3 505 -4:00 Arg -04/-03 2000 Mar 3 506 -3:00 - -03 2004 Jun 1 507 -4:00 - -04 2004 Jun 20 508 -3:00 Arg -03/-02 2008 Oct 18 509 -3:00 - -03 510# 511# Mendoza (MZ) 512Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 513 -4:16:48 - CMT 1920 May 514 -4:00 - -04 1930 Dec 515 -4:00 Arg -04/-03 1969 Oct 5 516 -3:00 Arg -03/-02 1990 Mar 4 517 -4:00 - -04 1990 Oct 15 518 -4:00 1:00 -03 1991 Mar 1 519 -4:00 - -04 1991 Oct 15 520 -4:00 1:00 -03 1992 Mar 1 521 -4:00 - -04 1992 Oct 18 522 -3:00 Arg -03/-02 1999 Oct 3 523 -4:00 Arg -04/-03 2000 Mar 3 524 -3:00 - -03 2004 May 23 525 -4:00 - -04 2004 Sep 26 526 -3:00 Arg -03/-02 2008 Oct 18 527 -3:00 - -03 528# 529# San Luis (SL) 530 531Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 532Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S 533 534Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 535 -4:16:48 - CMT 1920 May 536 -4:00 - -04 1930 Dec 537 -4:00 Arg -04/-03 1969 Oct 5 538 -3:00 Arg -03/-02 1990 539 -3:00 1:00 -02 1990 Mar 14 540 -4:00 - -04 1990 Oct 15 541 -4:00 1:00 -03 1991 Mar 1 542 -4:00 - -04 1991 Jun 1 543 -3:00 - -03 1999 Oct 3 544 -4:00 1:00 -03 2000 Mar 3 545 -3:00 - -03 2004 May 31 546 -4:00 - -04 2004 Jul 25 547 -3:00 Arg -03/-02 2008 Jan 21 548 -4:00 SanLuis -04/-03 2009 Oct 11 549 -3:00 - -03 550# 551# Santa Cruz (SC) 552Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 553 -4:16:48 - CMT 1920 May 554 -4:00 - -04 1930 Dec 555 -4:00 Arg -04/-03 1969 Oct 5 556 -3:00 Arg -03/-02 1999 Oct 3 557 -4:00 Arg -04/-03 2000 Mar 3 558 -3:00 - -03 2004 Jun 1 559 -4:00 - -04 2004 Jun 20 560 -3:00 Arg -03/-02 2008 Oct 18 561 -3:00 - -03 562# 563# Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) 564Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 565 -4:16:48 - CMT 1920 May 566 -4:00 - -04 1930 Dec 567 -4:00 Arg -04/-03 1969 Oct 5 568 -3:00 Arg -03/-02 1999 Oct 3 569 -4:00 Arg -04/-03 2000 Mar 3 570 -3:00 - -03 2004 May 30 571 -4:00 - -04 2004 Jun 20 572 -3:00 Arg -03/-02 2008 Oct 18 573 -3:00 - -03 574 575# Aruba 576Link America/Curacao America/Aruba 577 578# Bolivia 579# Zone NAME GMTOFF RULES FORMAT [UNTIL] 580Zone America/La_Paz -4:32:36 - LMT 1890 581 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 582 -4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST 583 -4:00 - -04 584 585# Brazil 586 587# From Paul Eggert (1993-11-18): 588# The mayor of Rio recently attempted to change the time zone rules 589# just in his city, in order to leave more summer time for the tourist trade. 590# The rule change lasted only part of the day; 591# the federal government refused to follow the city's rules, and business 592# was in a chaos, so the mayor backed down that afternoon. 593 594# From IATA SSIM (1996-02): 595# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 596# Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ), 597# Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO), 598# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 599# [The last three states are new to this issue of the IATA SSIM.] 600 601# From Gwillim Law (1996-10-07): 602# Geography, history (Tocantins was part of Goiás until 1989), and other 603# sources of time zone information lead me to believe that AL, SE, and TO were 604# always in BR1, and so the only change was whether or not they observed DST.... 605# The earliest issue of the SSIM I have is 2/91. Each issue from then until 606# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 607# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 608# (UTC-4).... The other two time zones given for Brazil are BR3, which is 609# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 610# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 611# become part of the state of Pernambuco). The boundary between BR1 and BR2 612# has never been clearly stated. They've simply been called East and West. 613# However, some conclusions can be drawn from another IATA manual: the Airline 614# Coding Directory, which lists close to 400 airports in Brazil. For each 615# airport it gives a time zone which is coded to the SSIM. From that 616# information, I'm led to conclude that the states of Amapá (AP), Ceará (CE), 617# Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do 618# Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST. 619 620# From Marcos Tadeu (1998-09-27): 621# Brazilian official page <http://pcdsh01.on.br/verao1.html> 622 623# From Jesper Nørgaard (2000-11-03): 624# [For an official list of which regions in Brazil use which time zones, see:] 625# http://pcdsh01.on.br/Fusbr.htm 626# http://pcdsh01.on.br/Fusbrhv.htm 627 628# From Celso Doria via David Madeo (2002-10-09): 629# The reason for the delay this year has to do with elections in Brazil. 630# 631# Unlike in the United States, elections in Brazil are 100% computerized and 632# the results are known almost immediately. Yesterday, it was the first 633# round of the elections when 115 million Brazilians voted for President, 634# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 635# counting (or re-counting) votes anymore and we know there will be a second 636# round for the Presidency and also for some Governors. The 2nd round will 637# take place on October 27th. 638# 639# The reason why the DST will only begin November 3rd is that the thousands 640# of electoral machines used cannot have their time changed, and since the 641# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 642# the Government decided to postpone DST, instead of changing the Constitution 643# (maybe, for the next elections, it will be possible to change the clock)... 644 645# From Rodrigo Severo (2004-10-04): 646# It's just the biannual change made necessary by the much hyped, supposedly 647# modern Brazilian eletronic voting machines which, apparently, can't deal 648# with a time change between the first and the second rounds of the elections. 649 650# From Steffen Thorsen (2007-09-20): 651# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 652# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 653 654# From Paul Schulze (2008-06-24): 655# ...by law number 11.662 of April 24, 2008 (published in the "Diario 656# Oficial da União"...) in Brazil there are changes in the timezones, 657# effective today (00:00am at June 24, 2008) as follows: 658# 659# a) The timezone UTC+5 is extinguished, with all the Acre state and the 660# part of the Amazonas state that had this timezone now being put to the 661# timezone UTC+4 662# b) The whole Pará state now is put at timezone UTC+3, instead of just 663# part of it, as was before. 664# 665# This change follows a proposal of senator Tiao Viana of Acre state, that 666# proposed it due to concerns about open television channels displaying 667# programs inappropriate to youths in the states that had the timezone 668# UTC+5 too early in the night. In the occasion, some more corrections 669# were proposed, trying to unify the timezones of any given state. This 670# change modifies timezone rules defined in decree 2.784 of 18 June, 671# 1913. 672 673# From Rodrigo Severo (2008-06-24): 674# Just correcting the URL: 675# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 676# 677# As a result of the above Decree I believe the America/Rio_Branco 678# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 679# be created to represent the...west side of the Pará State. I 680# suggest this new timezone be called Santarem as the most 681# important/populated city in the affected area. 682# 683# This new timezone would be the same as the Rio_Branco timezone up to 684# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 685 686# From Alex Krivenyshev (2008-06-24): 687# This is a quick reference page for New and Old Brazil Time Zones map. 688# http://www.worldtimezone.com/brazil-time-new-old.php 689# 690# - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05 691# (state Acre and the part of the Amazonas will be UTC/GMT-04) - western 692# part of Par state is moving to one timezone UTC-03 (from UTC-04). 693 694# From Paul Eggert (2002-10-10): 695# The official decrees referenced below are mostly taken from 696# Decretos sobre o Horário de Verão no Brasil. 697# http://pcdsh01.on.br/DecHV.html 698 699# From Steffen Thorsen (2008-08-29): 700# As announced by the government and many newspapers in Brazil late 701# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 702# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 703# past years experience with the elections, there was a good chance that 704# the start was postponed to November, but it did not happen this year. 705# 706# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 707# 708# An official page about it: 709# http://www.mme.gov.br/site/news/detail.do?newsId=16722 710# Note that this link does not always work directly, but must be accessed 711# by going to 712# http://www.mme.gov.br/first 713# 714# One example link that works directly: 715# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 716# (Portuguese) 717# 718# We have a written a short article about it as well: 719# https://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 720# 721# From Alexander Krivenyshev (2011-10-04): 722# State Bahia will return to Daylight savings time this year after 8 years off. 723# The announcement was made by Governor Jaques Wagner in an interview to a 724# television station in Salvador. 725 726# In Portuguese: 727# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 728# https://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 729 730# From Guilherme Bernardes Rodrigues (2011-10-07): 731# There is news in the media, however there is still no decree about it. 732# I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the 733# official agency about time in Brazil, and she confirmed that the old rule is 734# still in force. 735 736# From Guilherme Bernardes Rodrigues (2011-10-14) 737# It's official, the President signed a decree that includes Bahia in summer 738# time. 739# [ and in a second message (same day): ] 740# I found the decree. 741# 742# DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011 743# Link : 744# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 745 746# From Kelley Cook (2012-10-16): 747# The governor of state of Bahia in Brazil announced on Thursday that 748# due to public pressure, he is reversing the DST policy they implemented 749# last year and will not be going to Summer Time on October 21st.... 750# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia 751 752# From Rodrigo Severo (2012-10-16): 753# Tocantins state will have DST. 754# https://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html 755 756# From Steffen Thorsen (2013-09-20): 757# Tocantins in Brazil is very likely not to observe DST from October.... 758# http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto 759# We will keep this article updated when this is confirmed: 760# https://www.timeanddate.com/news/time/brazil-starts-dst-2013.html 761 762# From Steffen Thorsen (2013-10-17): 763# https://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html 764# Senator Jorge Viana announced that Acre will change time zone on November 10. 765# He did not specify the time of the change, nor if western parts of Amazonas 766# will change as well. 767# 768# From Paul Eggert (2013-10-17): 769# For now, assume western Amazonas will change as well. 770 771# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 772# Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01) 773# Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10) 774Rule Brazil 1931 only - Oct 3 11:00 1:00 S 775Rule Brazil 1932 1933 - Apr 1 0:00 0 - 776Rule Brazil 1932 only - Oct 3 0:00 1:00 S 777# Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10) 778# revoked DST. 779# Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24) 780# Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13) 781Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 782Rule Brazil 1950 only - Apr 16 1:00 0 - 783Rule Brazil 1951 1952 - Apr 1 0:00 0 - 784# Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24) 785Rule Brazil 1953 only - Mar 1 0:00 0 - 786# Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30) 787# revoked DST. 788# Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18) 789# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 790# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 791# Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03) 792# extended the above decree to all of the national territory on 12-09. 793Rule Brazil 1963 only - Dec 9 0:00 1:00 S 794# Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25) 795# extended summer time by one day to 1964-03-01 00:00 (start of school). 796Rule Brazil 1964 only - Mar 1 0:00 0 - 797# Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27) 798Rule Brazil 1965 only - Jan 31 0:00 1:00 S 799Rule Brazil 1965 only - Mar 31 0:00 0 - 800# Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22) 801Rule Brazil 1965 only - Dec 1 0:00 1:00 S 802# Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18) 803Rule Brazil 1966 1968 - Mar 1 0:00 0 - 804Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 805# Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15) 806# revoked DST. 807# Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27) 808Rule Brazil 1985 only - Nov 2 0:00 1:00 S 809# Decree 92,310 (1986-01-21) 810# Decree 92,463 (1986-03-13) 811Rule Brazil 1986 only - Mar 15 0:00 0 - 812# Decree 93,316 (1986-10-01) 813Rule Brazil 1986 only - Oct 25 0:00 1:00 S 814Rule Brazil 1987 only - Feb 14 0:00 0 - 815# Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22) 816Rule Brazil 1987 only - Oct 25 0:00 1:00 S 817Rule Brazil 1988 only - Feb 7 0:00 0 - 818# Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12) 819# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 820Rule Brazil 1988 only - Oct 16 0:00 1:00 S 821Rule Brazil 1989 only - Jan 29 0:00 0 - 822# Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21) 823# with the same exceptions 824Rule Brazil 1989 only - Oct 15 0:00 1:00 S 825Rule Brazil 1990 only - Feb 11 0:00 0 - 826# Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17) 827# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 828# Decree 99,629 (1990-10-19) adds BA, MT. 829Rule Brazil 1990 only - Oct 21 0:00 1:00 S 830Rule Brazil 1991 only - Feb 17 0:00 0 - 831# Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25) 832# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 833Rule Brazil 1991 only - Oct 20 0:00 1:00 S 834Rule Brazil 1992 only - Feb 9 0:00 0 - 835# Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16) 836# adopted by same states. 837Rule Brazil 1992 only - Oct 25 0:00 1:00 S 838Rule Brazil 1993 only - Jan 31 0:00 0 - 839# Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28) 840# adopted by same states, plus AM. 841# Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22; 842# web page corrected 2004-01-07) adopted by same states, minus AM. 843# Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14) 844# adopted by same states, plus MT and TO. 845# Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13) 846# adds AL, SE. 847Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 848Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 849Rule Brazil 1996 only - Feb 11 0:00 0 - 850# Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04) 851# adopted by same states, minus AL, SE. 852Rule Brazil 1996 only - Oct 6 0:00 1:00 S 853Rule Brazil 1997 only - Feb 16 0:00 0 - 854# From Daniel C. Sobral (1998-02-12): 855# In 1997, the DS began on October 6. The stated reason was that 856# because international television networks ignored Brazil's policy on DS, 857# they bought the wrong times on satellite for coverage of Pope's visit. 858# This year, the ending date of DS was postponed to March 1 859# to help dealing with the shortages of electric power. 860# 861# Decree 2,317 (1997-09-04), adopted by same states. 862Rule Brazil 1997 only - Oct 6 0:00 1:00 S 863# Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG> 864# (1998-02-10) 865Rule Brazil 1998 only - Mar 1 0:00 0 - 866# Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11) 867# adopted by the same states as before. 868Rule Brazil 1998 only - Oct 11 0:00 1:00 S 869Rule Brazil 1999 only - Feb 21 0:00 0 - 870# Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif> 871# (1999-08-23) adopted by same states. 872# Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30) 873# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 874Rule Brazil 1999 only - Oct 3 0:00 1:00 S 875Rule Brazil 2000 only - Feb 27 0:00 0 - 876# Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06) 877# adopted by the same states as before. 878# Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13) 879# repeals DST in PE and RR, effective 2000-10-15 00:00. 880# Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17) 881# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 882# Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif> 883# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 884Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 885Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 886# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 887# 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm> 888Rule Brazil 2002 only - Nov 3 0:00 1:00 S 889# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 890# 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm> 891Rule Brazil 2003 only - Oct 19 0:00 1:00 S 892# Decree 5,223 (2004-10-01) reestablishes DST in MT. 893# 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm> 894Rule Brazil 2004 only - Nov 2 0:00 1:00 S 895# Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19), 896# adopted by the same states as before. 897Rule Brazil 2005 only - Oct 16 0:00 1:00 S 898# Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03), 899# adopted by the same states as before. 900Rule Brazil 2006 only - Nov 5 0:00 1:00 S 901Rule Brazil 2007 only - Feb 25 0:00 0 - 902# Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26), 903# adopted by the same states as before. 904Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 905# From Frederico A. C. Neves (2008-09-10): 906# According to this decree 907# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 908# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 909# 3rd Feb Sunday. There is an exception on the return date when this is 910# the Carnival Sunday then the return date will be the next Sunday... 911Rule Brazil 2008 2017 - Oct Sun>=15 0:00 1:00 S 912Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 913# Decree 7,584 <http://pcdsh01.on.br/HVdecreto7584_20111013.jpg> (2011-10-13) 914# added Bahia. 915Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 916# Decree 7,826 <http://pcdsh01.on.br/HVdecreto7826_20121015.jpg> (2012-10-15) 917# removed Bahia and added Tocantins. 918# Decree 8,112 <http://pcdsh01.on.br/HVdecreto8112_20130930.JPG> (2013-09-30) 919# removed Tocantins. 920Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 921Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 922Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 923# From Steffen Thorsen (2017-12-18): 924# According to many media sources, next year's DST start in Brazil will move to 925# the first Sunday of November, and it will stay like that for the years after. 926# ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html 927# From Steffen Thorsen (2017-12-20): 928# http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm 929Rule Brazil 2018 max - Nov Sun>=1 0:00 1:00 S 930Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 931Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 932Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 933Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 934Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 935Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 936Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 937# From Arthur David Olson (2008-09-29): 938# The next is wrong in some years but is better than nothing. 939Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 940 941# The latest ruleset listed above says that the following states observe DST: 942# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 943 944# Zone NAME GMTOFF RULES FORMAT [UNTIL] 945# 946# Fernando de Noronha (administratively part of PE) 947Zone America/Noronha -2:09:40 - LMT 1914 948 -2:00 Brazil -02/-01 1990 Sep 17 949 -2:00 - -02 1999 Sep 30 950 -2:00 Brazil -02/-01 2000 Oct 15 951 -2:00 - -02 2001 Sep 13 952 -2:00 Brazil -02/-01 2002 Oct 1 953 -2:00 - -02 954# Other Atlantic islands have no permanent settlement. 955# These include Trindade and Martim Vaz (administratively part of ES), 956# Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). 957# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 958# it also included the Penedos. 959# 960# Amapá (AP), east Pará (PA) 961# East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu. 962# The division between east and west Pará is the river Xingu. 963# In the north a very small part from the river Javary (now Jari I guess, 964# the border with Amapá) to the Amazon, then to the Xingu. 965Zone America/Belem -3:13:56 - LMT 1914 966 -3:00 Brazil -03/-02 1988 Sep 12 967 -3:00 - -03 968# 969# west Pará (PA) 970# West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém. 971Zone America/Santarem -3:38:48 - LMT 1914 972 -4:00 Brazil -04/-03 1988 Sep 12 973 -4:00 - -04 2008 Jun 24 0:00 974 -3:00 - -03 975# 976# Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), 977# Paraíba (PB) 978Zone America/Fortaleza -2:34:00 - LMT 1914 979 -3:00 Brazil -03/-02 1990 Sep 17 980 -3:00 - -03 1999 Sep 30 981 -3:00 Brazil -03/-02 2000 Oct 22 982 -3:00 - -03 2001 Sep 13 983 -3:00 Brazil -03/-02 2002 Oct 1 984 -3:00 - -03 985# 986# Pernambuco (PE) (except Atlantic islands) 987Zone America/Recife -2:19:36 - LMT 1914 988 -3:00 Brazil -03/-02 1990 Sep 17 989 -3:00 - -03 1999 Sep 30 990 -3:00 Brazil -03/-02 2000 Oct 15 991 -3:00 - -03 2001 Sep 13 992 -3:00 Brazil -03/-02 2002 Oct 1 993 -3:00 - -03 994# 995# Tocantins (TO) 996Zone America/Araguaina -3:12:48 - LMT 1914 997 -3:00 Brazil -03/-02 1990 Sep 17 998 -3:00 - -03 1995 Sep 14 999 -3:00 Brazil -03/-02 2003 Sep 24 1000 -3:00 - -03 2012 Oct 21 1001 -3:00 Brazil -03/-02 2013 Sep 1002 -3:00 - -03 1003# 1004# Alagoas (AL), Sergipe (SE) 1005Zone America/Maceio -2:22:52 - LMT 1914 1006 -3:00 Brazil -03/-02 1990 Sep 17 1007 -3:00 - -03 1995 Oct 13 1008 -3:00 Brazil -03/-02 1996 Sep 4 1009 -3:00 - -03 1999 Sep 30 1010 -3:00 Brazil -03/-02 2000 Oct 22 1011 -3:00 - -03 2001 Sep 13 1012 -3:00 Brazil -03/-02 2002 Oct 1 1013 -3:00 - -03 1014# 1015# Bahia (BA) 1016# There are too many Salvadors elsewhere, so use America/Bahia instead 1017# of America/Salvador. 1018Zone America/Bahia -2:34:04 - LMT 1914 1019 -3:00 Brazil -03/-02 2003 Sep 24 1020 -3:00 - -03 2011 Oct 16 1021 -3:00 Brazil -03/-02 2012 Oct 21 1022 -3:00 - -03 1023# 1024# Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), 1025# Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR), 1026# Santa Catarina (SC), Rio Grande do Sul (RS) 1027Zone America/Sao_Paulo -3:06:28 - LMT 1914 1028 -3:00 Brazil -03/-02 1963 Oct 23 0:00 1029 -3:00 1:00 -02 1964 1030 -3:00 Brazil -03/-02 1031# 1032# Mato Grosso do Sul (MS) 1033Zone America/Campo_Grande -3:38:28 - LMT 1914 1034 -4:00 Brazil -04/-03 1035# 1036# Mato Grosso (MT) 1037Zone America/Cuiaba -3:44:20 - LMT 1914 1038 -4:00 Brazil -04/-03 2003 Sep 24 1039 -4:00 - -04 2004 Oct 1 1040 -4:00 Brazil -04/-03 1041# 1042# Rondônia (RO) 1043Zone America/Porto_Velho -4:15:36 - LMT 1914 1044 -4:00 Brazil -04/-03 1988 Sep 12 1045 -4:00 - -04 1046# 1047# Roraima (RR) 1048Zone America/Boa_Vista -4:02:40 - LMT 1914 1049 -4:00 Brazil -04/-03 1988 Sep 12 1050 -4:00 - -04 1999 Sep 30 1051 -4:00 Brazil -04/-03 2000 Oct 15 1052 -4:00 - -04 1053# 1054# east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto 1055# The great circle line from Tabatinga to Porto Acre divides 1056# east from west Amazonas. 1057Zone America/Manaus -4:00:04 - LMT 1914 1058 -4:00 Brazil -04/-03 1988 Sep 12 1059 -4:00 - -04 1993 Sep 28 1060 -4:00 Brazil -04/-03 1994 Sep 22 1061 -4:00 - -04 1062# 1063# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1064# Eirunepé, Envira, Ipixuna 1065Zone America/Eirunepe -4:39:28 - LMT 1914 1066 -5:00 Brazil -05/-04 1988 Sep 12 1067 -5:00 - -05 1993 Sep 28 1068 -5:00 Brazil -05/-04 1994 Sep 22 1069 -5:00 - -05 2008 Jun 24 0:00 1070 -4:00 - -04 2013 Nov 10 1071 -5:00 - -05 1072# 1073# Acre (AC) 1074Zone America/Rio_Branco -4:31:12 - LMT 1914 1075 -5:00 Brazil -05/-04 1988 Sep 12 1076 -5:00 - -05 2008 Jun 24 0:00 1077 -4:00 - -04 2013 Nov 10 1078 -5:00 - -05 1079 1080# Chile 1081 1082# From Paul Eggert (2015-04-03): 1083# Shanks & Pottenger says America/Santiago introduced standard time in 1084# 1890 and rounds its UT offset to 70W40; guess that in practice this 1085# was the same offset as in 1916-1919. It also says Pacific/Easter 1086# standardized on 109W22 in 1890; assume this didn't change the clocks. 1087# 1088# Dates for America/Santiago from 1910 to 2004 are primarily from 1089# the following source, cited by Oscar van Vlijmen (2006-10-08): 1090# [1] Chile Law 1091# http://www.webexhibits.org/daylightsaving/chile.html 1092# This contains a copy of this official table: 1093# Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) 1094# https://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm 1095# [1] needs several corrections, though. 1096# 1097# The first set of corrections is from: 1098# [2] History of the Official Time of Chile 1099# http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See: 1100# https://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html 1101# This is an English translation of: 1102# Historia de la hora oficial de Chile (retrieved 2012-10-24). See: 1103# https://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm 1104# A fancier Spanish version (requiring mouse-clicking) is at: 1105# http://www.horaoficial.cl/historia_hora.html 1106# Conflicts between [1] and [2] were resolved as follows: 1107# 1108# - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites 1109# Boletín No. 1, Aviso No. 1 (1910). Go with [2]. 1110# 1111# - [1] says SMT was -4:42:45, [2] says Chile's official time from 1112# 1916 to 1919 was -4:42:46.3, the meridian of Chile's National 1113# Astronomical Observatory (OAN), then located in what is now 1114# Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46. 1115# 1116# - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites 1117# Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2]. 1118# 1119# - [1] does not give times for transitions; assume they occur 1120# at midnight mainland time, the current common practice. However, 1121# go with [2]'s specification of 23:00 for the 1947-05-21 transition. 1122# 1123# Another correction to [1] is from Jesper Nørgaard Welen, who 1124# wrote (2006-10-08), "I think that there are some obvious mistakes in 1125# the suggested link from Oscar van Vlijmen,... for instance entry 66 1126# says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at 1127# 1990-09-15 (they should have been 1990-09-15 and 1990-09-16 1128# respectively), but anyhow it clears up some doubts too." 1129# 1130# Data for Pacific/Easter from 1910 through 1967 come from Shanks & 1131# Pottenger. After that, for lack of better info assume 1132# Pacific/Easter is always two hours behind America/Santiago; 1133# this is known to work for DST transitions starting in 2008 and 1134# may well be true for earlier transitions. 1135 1136# From Eduardo Krell (1995-10-19): 1137# The law says to switch to DST at midnight [24:00] on the second SATURDAY 1138# of October.... The law is the same for March and October. 1139# (1998-09-29): 1140# Because of the drought this year, the government decided to go into 1141# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1142# (unless there's another dry season next year, I guess). 1143 1144# From Julio I. Pacheco Troncoso (1999-03-18): 1145# Because of the same drought, the government decided to end DST later, 1146# on April 3, (one-time change). 1147 1148# From Germán Poo-Caamaño (2008-03-03): 1149# Due to drought, Chile extends Daylight Time in three weeks. This 1150# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1151# and Saturday 3/29 at 22:00 for Pacific/Easter) 1152# The Supreme Decree is located at 1153# http://www.shoa.cl/servicios/supremo316.pdf 1154# 1155# From José Miguel Garrido (2008-03-05): 1156# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1157 1158# From Angel Chiang (2010-03-04): 1159# Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1160# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1161# 1162# From Arthur David Olson (2010-03-06): 1163# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1164 1165# From Glenn Eychaner (2011-03-28): 1166# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1167# In English: 1168# Chile's clocks will go back an hour this year on the 7th of May instead 1169# of this Saturday. They will go forward again the 3rd Saturday in 1170# August, not in October as they have since 1968. 1171 1172# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23): 1173# As stated in the website of the Chilean Energy Ministry 1174# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html 1175# The Chilean Government has decided to postpone the entrance into winter time 1176# (to leave DST) from March 11 2012 to April 28th 2012.... 1177# Quote from the website communication: 1178# 1179# 6. For the year 2012, the dates of entry into winter time will be as follows: 1180# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at 1181# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00 1182# of the same day. 1183# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is, 1184# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be 1185# 01:00 on September 2. 1186 1187# From Steffen Thorsen (2013-02-15): 1188# According to several news sources, Chile has extended DST this year, 1189# they will end DST later and start DST earlier than planned. They 1190# hope to save energy. The new end date is 2013-04-28 00:00 and new 1191# start date is 2013-09-08 00:00.... 1192# http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm 1193 1194# From José Miguel Garrido (2014-02-19): 1195# Today appeared in the Diario Oficial a decree amending the time change 1196# dates to 2014. 1197# DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC) 1198# DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC) 1199# http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf 1200 1201# From Eduardo Romero Urra (2015-03-03): 1202# Today has been published officially that Chile will use the DST time 1203# permanently until March 25 of 2017 1204# http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg 1205# 1206# From Paul Eggert (2015-03-03): 1207# For now, assume that the extension will persist indefinitely. 1208 1209# From Juan Correa (2016-03-18): 1210# The decree regarding DST has been published in today's Official Gazette: 1211# http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/ 1212# http://www.leychile.cl/Navegar?idNorma=1088502 1213# It does consider the second Saturday of May and August as the dates 1214# for the transition; and it lists DST dates until 2019, but I think 1215# this scheme will stick. 1216# 1217# From Paul Eggert (2016-03-18): 1218# For now, assume the pattern holds for the indefinite future. 1219# The decree says transitions occur at 24:00; in practice this appears 1220# to mean 24:00 mainland time, not 24:00 local time, so that Easter 1221# Island is always two hours behind the mainland. 1222 1223# From Juan Correa (2016-12-04): 1224# Magallanes region ... will keep DST (UTC -3) all year round.... 1225# http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-el-decreto-para-establecer-un-horario-unico-para-la-Region-de-Magallanes.aspx 1226# 1227# From Deborah Goldsmith (2017-01-19): 1228# http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf 1229# From Paul Eggert (2017-01-19): 1230# The above says the Magallanes change expires 2019-05-11 at 24:00, 1231# so in theory, they will revert to -04/-03 after that, which means 1232# they will switch from -03 to -04 one hour after Santiago does that day. 1233# For now, assume that they will not revert. 1234 1235# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1236Rule Chile 1927 1931 - Sep 1 0:00 1:00 S 1237Rule Chile 1928 1932 - Apr 1 0:00 0 - 1238Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1239Rule Chile 1969 only - Mar 30 3:00u 0 - 1240Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1241Rule Chile 1970 only - Mar 29 3:00u 0 - 1242Rule Chile 1971 only - Mar 14 3:00u 0 - 1243Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1244Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1245Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1246Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1247Rule Chile 1987 only - Apr 12 3:00u 0 - 1248Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 - 1249Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 S 1250Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1251Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1252Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1253Rule Chile 1997 only - Mar 30 3:00u 0 - 1254Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1255Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1256Rule Chile 1999 only - Apr 4 3:00u 0 - 1257Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1258Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1259# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1260# which is used below in specifying the transition. 1261Rule Chile 2008 only - Mar 30 3:00u 0 - 1262Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1263Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1264Rule Chile 2011 only - May Sun>=2 3:00u 0 - 1265Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1266Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 - 1267Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S 1268Rule Chile 2016 max - May Sun>=9 3:00u 0 - 1269Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S 1270# IATA SSIM anomalies: (1992-02) says 1992-03-14; 1271# (1996-09) says 1998-03-08. Ignore these. 1272# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1273Zone America/Santiago -4:42:46 - LMT 1890 1274 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time 1275 -5:00 - -05 1916 Jul 1 1276 -4:42:46 - SMT 1918 Sep 10 1277 -4:00 - -04 1919 Jul 1 1278 -4:42:46 - SMT 1927 Sep 1 1279 -5:00 Chile -05/-04 1932 Sep 1 1280 -4:00 - -04 1942 Jun 1 1281 -5:00 - -05 1942 Aug 1 1282 -4:00 - -04 1946 Jul 15 1283 -4:00 1:00 -03 1946 Sep 1 # central Chile 1284 -4:00 - -04 1947 Apr 1 1285 -5:00 - -05 1947 May 21 23:00 1286 -4:00 Chile -04/-03 1287Zone America/Punta_Arenas -4:43:40 - LMT 1890 1288 -4:42:46 - SMT 1910 Jan 10 1289 -5:00 - -05 1916 Jul 1 1290 -4:42:46 - SMT 1918 Sep 10 1291 -4:00 - -04 1919 Jul 1 1292 -4:42:46 - SMT 1927 Sep 1 1293 -5:00 Chile -05/-04 1932 Sep 1 1294 -4:00 - -04 1942 Jun 1 1295 -5:00 - -05 1942 Aug 1 1296 -4:00 - -04 1947 Apr 1 1297 -5:00 - -05 1947 May 21 23:00 1298 -4:00 Chile -04/-03 2016 Dec 4 1299 -3:00 - -03 1300Zone Pacific/Easter -7:17:28 - LMT 1890 1301 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1302 -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time 1303 -6:00 Chile -06/-05 1304# 1305# Salas y Gómez Island is uninhabited. 1306# Other Chilean locations, including Juan Fernández Is, Desventuradas Is, 1307# and Antarctic bases, are like America/Santiago. 1308 1309# Antarctic base using South American rules 1310# (See the file 'antarctica' for more.) 1311# 1312# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) 1313# 1314# From Ethan Dicks (1996-10-06): 1315# It keeps the same time as Punta Arenas, Chile, because, just like us 1316# and the South Pole, that's the other end of their supply line.... 1317# I verified with someone who was there that since 1980, 1318# Palmer has followed Chile. Prior to that, before the Falklands War, 1319# Palmer used to be supplied from Argentina. 1320# 1321# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1322Zone Antarctica/Palmer 0 - -00 1965 1323 -4:00 Arg -04/-03 1969 Oct 5 1324 -3:00 Arg -03/-02 1982 May 1325 -4:00 Chile -04/-03 2016 Dec 4 1326 -3:00 - -03 1327 1328# Colombia 1329 1330# Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, 1331# "A variation of fifteen minutes in the public clocks of Bogota is not rare." 1332 1333# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1334Rule CO 1992 only - May 3 0:00 1:00 S 1335Rule CO 1993 only - Apr 4 0:00 0 - 1336# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1337Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 1338 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time 1339 -5:00 CO -05/-04 1340# Malpelo, Providencia, San Andres 1341# no information; probably like America/Bogota 1342 1343# Curaçao 1344 1345# Milne gives 4:35:46.9 for Curaçao mean time; round to nearest. 1346# 1347# From Paul Eggert (2006-03-22): 1348# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1349# -4:00 since standard time was introduced on 1912-03-02; and that 1350# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1351# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1352# Saba Island has been like Curaçao. 1353# This all predates our 1970 cutoff, though. 1354# 1355# By July 2007 Curaçao and St Maarten are planned to become 1356# associated states within the Netherlands, much like Aruba; 1357# Bonaire, Saba and St Eustatius would become directly part of the 1358# Netherlands as Kingdom Islands. This won't affect their time zones 1359# though, as far as we know. 1360# 1361# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1362Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad 1363 -4:30 - -0430 1965 1364 -4:00 - AST 1365 1366# From Arthur David Olson (2011-06-15): 1367# use links for places with new iso3166 codes. 1368# The name "Lower Prince's Quarter" is both longer than fourteen characters 1369# and contains an apostrophe; use "Lower_Princes" below. 1370 1371Link America/Curacao America/Lower_Princes # Sint Maarten 1372Link America/Curacao America/Kralendijk # Caribbean Netherlands 1373 1374# Ecuador 1375# 1376# Milne says the Central and South American Telegraph Company used -5:24:15. 1377# 1378# From Alois Treindl (2016-12-15): 1379# https://www.elcomercio.com/actualidad/hora-sixto-1993.html 1380# ... Whether the law applied also to Galápagos, I do not know. 1381# From Paul Eggert (2016-12-15): 1382# https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html 1383# This says President Sixto Durán Ballén signed decree No. 285, which 1384# established DST from 1992-11-28 to 1993-02-05; it does not give transition 1385# times. The people called it "hora de Sixto" ("Sixto hour"). The change did 1386# not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics 1387# that included "Amanecía en mitad de la noche, los guaguas iban a clase sin 1388# sol" ("It was dawning in the middle of the night, the buses went to class 1389# without sun"). Although Ballén's campaign slogan was "Ni un paso atrás" 1390# (Not one step back), the clocks went back in 1993 and the experiment was not 1391# repeated. For now, assume transitions were at 00:00 local time country-wide. 1392# 1393# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1394Rule Ecuador 1992 only - Nov 28 0:00 1:00 S 1395Rule Ecuador 1993 only - Feb 5 0:00 0 - 1396# 1397# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1398Zone America/Guayaquil -5:19:20 - LMT 1890 1399 -5:14:00 - QMT 1931 # Quito Mean Time 1400 -5:00 Ecuador -05/-04 1401Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1402 -5:00 - -05 1986 1403 -6:00 Ecuador -06/-05 1404 1405# Falklands 1406 1407# From Paul Eggert (2006-03-22): 1408# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1409# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1410 1411# From Falkland Islands Government Office, London (2001-01-22) 1412# via Jesper Nørgaard: 1413# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1414# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1415# September. It is anticipated that the clocks will revert back at 2 1416# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1417# Sunday 1 September. 1418 1419# From Rives McDow (2001-02-13): 1420# 1421# I have communicated several times with people there, and the last 1422# time I had communications that was helpful was in 1998. Here is 1423# what was said then: 1424# 1425# "The general rule was that Stanley used daylight saving and the Camp 1426# did not. However for various reasons many people in the Camp have 1427# started to use daylight saving (known locally as 'Stanley Time') 1428# There is no rule as to who uses daylight saving - it is a matter of 1429# personal choice and so it is impossible to draw a map showing who 1430# uses it and who does not. Any list would be out of date as soon as 1431# it was produced. This year daylight saving ended on April 18/19th 1432# and started again on September 12/13th. I do not know what the rule 1433# is, but can find out if you like. We do not change at the same time 1434# as UK or Chile." 1435# 1436# I did have in my notes that the rule was "Second Saturday in Sep at 1437# 0:00 until third Saturday in Apr at 0:00". I think that this does 1438# not agree in some cases with Shanks; is this true? 1439# 1440# Also, there is no mention in the list that some areas in the 1441# Falklands do not use DST. I have found in my communications there 1442# that these areas are on the western half of East Falkland and all of 1443# West Falkland. Stanley is the only place that consistently observes 1444# DST. Again, as in other places in the world, the farmers don't like 1445# it. West Falkland is almost entirely sheep farmers. 1446# 1447# I know one lady there that keeps a list of which farm keeps DST and 1448# which doesn't each year. She runs a shop in Stanley, and says that 1449# the list changes each year. She uses it to communicate to her 1450# customers, catching them when they are home for lunch or dinner. 1451 1452# From Paul Eggert (2001-03-05): 1453# For now, we'll just record the time in Stanley, since we have no 1454# better info. 1455 1456# From Steffen Thorsen (2011-04-01): 1457# The Falkland Islands will not turn back clocks this winter, but stay on 1458# daylight saving time. 1459# 1460# One source: 1461# http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1462# 1463# We have gotten this confirmed by a clerk of the legislative assembly: 1464# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1465# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1466# hours) on the first Sunday of September at 0200hrs. 1467# 1468# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1469# will not revert to local mean time, but clocks will remain on Summer 1470# time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1471# change to local time following the trial period will be notified. 1472# 1473# From Andrew Newman (2012-02-24) 1474# A letter from Justin McPhee, Chief Executive, 1475# Cable & Wireless Falkland Islands (dated 2012-02-22) 1476# states... 1477# The current Atlantic/Stanley entry under South America expects the 1478# clocks to go back to standard Falklands Time (FKT) on the 15th April. 1479# The database entry states that in 2011 Stanley was staying on fixed 1480# summer time on a trial basis only. FIG need to contact IANA and/or 1481# the maintainers of the database to inform them we're adopting 1482# the same policy this year and suggest recommendations for future years. 1483# 1484# For now we will assume permanent summer time for the Falklands 1485# until advised differently (to apply for 2012 and beyond, after the 2011 1486# experiment was apparently successful.) 1487# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1488Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1489Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1490Rule Falk 1939 only - Oct 1 0:00 1:00 S 1491Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1492Rule Falk 1943 only - Jan 1 0:00 0 - 1493Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1494Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1495Rule Falk 1984 only - Sep 16 0:00 1:00 S 1496Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1497Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1498Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1499Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S 1500# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1501Zone Atlantic/Stanley -3:51:24 - LMT 1890 1502 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1503 -4:00 Falk -04/-03 1983 May 1504 -3:00 Falk -03/-02 1985 Sep 15 1505 -4:00 Falk -04/-03 2010 Sep 5 2:00 1506 -3:00 - -03 1507 1508# French Guiana 1509# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1510Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1511 -4:00 - -04 1967 Oct 1512 -3:00 - -03 1513 1514# Guyana 1515# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1516Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1517 -3:45 - -0345 1975 Jul 31 1518 -3:00 - -03 1991 1519# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1520 -4:00 - -04 1521 1522# Paraguay 1523# 1524# From Paul Eggert (2006-03-22): 1525# Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, 1526# and autumn transitions are 00:00 -> 23:00. Go with pre-1999 1527# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1528# 1529# From Waldemar Villamayor-Venialbo (2013-09-20): 1530# No time of the day is established for the adjustment, so people normally 1531# adjust their clocks at 0 hour of the given dates. 1532# 1533# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1534Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1535Rule Para 1975 1978 - Mar 1 0:00 0 - 1536Rule Para 1979 1991 - Apr 1 0:00 0 - 1537Rule Para 1989 only - Oct 22 0:00 1:00 S 1538Rule Para 1990 only - Oct 1 0:00 1:00 S 1539Rule Para 1991 only - Oct 6 0:00 1:00 S 1540Rule Para 1992 only - Mar 1 0:00 0 - 1541Rule Para 1992 only - Oct 5 0:00 1:00 S 1542Rule Para 1993 only - Mar 31 0:00 0 - 1543Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1544Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1545Rule Para 1996 only - Mar 1 0:00 0 - 1546# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1547# From Steffen Thorsen (2000-10-02): 1548# I have three independent reports that Paraguay changed to DST this Sunday 1549# (10-01). 1550# 1551# Translated by Gwillim Law (2001-02-27) from 1552# Noticias, a daily paper in Asunción, Paraguay (2000-10-01): 1553# http://www.diarionoticias.com.py/011000/nacional/naciona1.htm 1554# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1555# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1556# system has been operating for several years. Formerly there was a separate 1557# decree each year; the new law has the same effect, but permanently. Every 1558# year, the time will change on the first Sunday of October; likewise, the 1559# clock will be set back on the first Sunday of March. 1560# 1561Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1562# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1563Rule Para 1997 only - Feb lastSun 0:00 0 - 1564# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1565# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1566Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1567# From Rives McDow (2002-02-28): 1568# A decree was issued in Paraguay (No. 16350) on 2002-02-26 that changed the 1569# dst method to be from the first Sunday in September to the first Sunday in 1570# April. 1571Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1572Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1573# 1574# From Jesper Nørgaard Welen (2005-01-02): 1575# There are several sources that claim that Paraguay made 1576# a timezone rule change in autumn 2004. 1577# From Steffen Thorsen (2005-01-05): 1578# Decree 1,867 (2004-03-05) 1579# From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13) 1580# http://www.presidencia.gov.py/decretos/D1867.pdf 1581Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1582Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1583# From Carlos Raúl Perasso (2010-02-18): 1584# By decree number 3958 issued yesterday 1585# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1586# Paraguay changes its DST schedule, postponing the March rule to April and 1587# modifying the October date. The decree reads: 1588# ... 1589# Art. 1. It is hereby established that from the second Sunday of the month of 1590# April of this year (2010), the official time is to be set back 60 minutes, 1591# and that on the first Sunday of the month of October, it is to be set 1592# forward 60 minutes, in all the territory of the Paraguayan Republic. 1593# ... 1594Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1595Rule Para 2010 2012 - Apr Sun>=8 0:00 0 - 1596# 1597# From Steffen Thorsen (2013-03-07): 1598# Paraguay will end DST on 2013-03-24 00:00.... 1599# http://www.ande.gov.py/interna.php?id=1075 1600# 1601# From Carlos Raúl Perasso (2013-03-15): 1602# The change in Paraguay is now final. Decree number 10780 1603# http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf 1604# From Carlos Raúl Perasso (2014-02-28): 1605# Decree 1264 can be found at: 1606# http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf 1607Rule Para 2013 max - Mar Sun>=22 0:00 0 - 1608 1609# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1610Zone America/Asuncion -3:50:40 - LMT 1890 1611 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time 1612 -4:00 - -04 1972 Oct 1613 -3:00 - -03 1974 Apr 1614 -4:00 Para -04/-03 1615 1616# Peru 1617# 1618# From Evelyn C. Leeper via Mark Brader (2003-10-26) 1619# <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>: 1620# When we were in Peru in 1985-1986, they apparently switched over 1621# sometime between December 29 and January 3 while we were on the Amazon. 1622# 1623# From Paul Eggert (2006-03-22): 1624# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1625 1626# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1627Rule Peru 1938 only - Jan 1 0:00 1:00 S 1628Rule Peru 1938 only - Apr 1 0:00 0 - 1629Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1630Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1631Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1632Rule Peru 1986 1987 - Apr 1 0:00 0 - 1633Rule Peru 1990 only - Jan 1 0:00 1:00 S 1634Rule Peru 1990 only - Apr 1 0:00 0 - 1635# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1636Rule Peru 1994 only - Jan 1 0:00 1:00 S 1637Rule Peru 1994 only - Apr 1 0:00 0 - 1638# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1639Zone America/Lima -5:08:12 - LMT 1890 1640 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1641 -5:00 Peru -05/-04 1642 1643# South Georgia 1644# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1645Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1646 -2:00 - -02 1647 1648# South Sandwich Is 1649# uninhabited; scientific personnel have wintered 1650 1651# Suriname 1652# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1653Zone America/Paramaribo -3:40:40 - LMT 1911 1654 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1655 -3:40:36 - PMT 1945 Oct # The capital moved? 1656 -3:30 - -0330 1984 Oct 1657 -3:00 - -03 1658 1659# Trinidad and Tobago 1660# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1661Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1662 -4:00 - AST 1663 1664# These all agree with Trinidad and Tobago since 1970. 1665Link America/Port_of_Spain America/Anguilla 1666Link America/Port_of_Spain America/Antigua 1667Link America/Port_of_Spain America/Dominica 1668Link America/Port_of_Spain America/Grenada 1669Link America/Port_of_Spain America/Guadeloupe 1670Link America/Port_of_Spain America/Marigot # St Martin (French part) 1671Link America/Port_of_Spain America/Montserrat 1672Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy 1673Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis 1674Link America/Port_of_Spain America/St_Lucia 1675Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US) 1676Link America/Port_of_Spain America/St_Vincent 1677Link America/Port_of_Spain America/Tortola # Virgin Islands (UK) 1678 1679# Uruguay 1680# From Paul Eggert (1993-11-18): 1681# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1682# From Shanks & Pottenger: 1683# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1684# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1685Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1686Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1687Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1688Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1689# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1690Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1691Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1692Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1693# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1694Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1695# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1696# and 1943 Apr 13 "to present time"; go with Shanks & Pottenger. 1697Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1698Rule Uruguay 1942 only - Jan 1 0:00 0 - 1699Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1700Rule Uruguay 1943 only - Mar 14 0:00 0 - 1701Rule Uruguay 1959 only - May 24 0:00 1:00 S 1702Rule Uruguay 1959 only - Nov 15 0:00 0 - 1703Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1704Rule Uruguay 1960 only - Mar 6 0:00 0 - 1705Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1706Rule Uruguay 1965 only - Sep 26 0:00 0 - 1707Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1708Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1709Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1710Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1711Rule Uruguay 1972 only - Aug 15 0:00 0 - 1712Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1713Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1714Rule Uruguay 1976 only - Oct 1 0:00 0 - 1715Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1716Rule Uruguay 1978 only - Apr 1 0:00 0 - 1717Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1718Rule Uruguay 1980 only - May 1 0:00 0 - 1719Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1720Rule Uruguay 1988 only - Mar 14 0:00 0 - 1721Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1722Rule Uruguay 1989 only - Mar 12 0:00 0 - 1723Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1724# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1725# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1726Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1727Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1728Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1729Rule Uruguay 1993 only - Feb 28 0:00 0 - 1730# From Eduardo Cota (2004-09-20): 1731# The Uruguayan government has decreed a change in the local time.... 1732# http://www.presidencia.gub.uy/decretos/2004091502.htm 1733Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1734# From Steffen Thorsen (2005-03-11): 1735# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1736# save energy ... it was postponed two weeks.... 1737# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1738Rule Uruguay 2005 only - Mar 27 2:00 0 - 1739# From Eduardo Cota (2005-09-27): 1740# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1741# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1742# 02:00 local time, official time in Uruguay will be at GMT -2. 1743Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1744Rule Uruguay 2006 only - Mar 12 2:00 0 - 1745# From Jesper Nørgaard Welen (2006-09-06): 1746# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1747# 1748# From Steffen Thorsen (2015-06-30): 1749# ... it looks like they will not be using DST the coming summer: 1750# http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787 1751# http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/ 1752# From Paul Eggert (2015-06-30): 1753# Apparently restaurateurs complained that DST caused people to go to the beach 1754# instead of out to dinner. 1755# From Pablo Camargo (2015-07-13): 1756# http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf 1757# [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04] 1758Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S 1759Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 - 1760 1761# This Zone can be simplified once we assume zic %z. 1762Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1763 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1764 -3:30 Uruguay -0330/-03 1942 Dec 14 1765 -3:00 Uruguay -03/-02 1968 1766 -3:00 Uruguay -03/-0230 1971 1767 -3:00 Uruguay -03/-02 1974 1768 -3:00 Uruguay -03/-0230 1974 Dec 22 1769 -3:00 Uruguay -03/-02 1770 1771# Venezuela 1772# 1773# From Paul Eggert (2015-07-28): 1774# For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533 1775# http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf 1776# 1777# From John Stainforth (2007-11-28): 1778# ... the change for Venezuela originally expected for 2007-12-31 has 1779# been brought forward to 2007-12-09. The official announcement was 1780# published today in the "Gaceta Oficial de la República Bolivariana 1781# de Venezuela, número 38.819" (official document for all laws or 1782# resolution publication) 1783# http://www.globovision.com/news.php?nid=72208 1784 1785# From Alexander Krivenyshev (2016-04-15): 1786# https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino 1787# 1788# From Paul Eggert (2016-04-15): 1789# Clocks advance 30 minutes on 2016-05-01 at 02:30.... 1790# "'Venezuela's new time-zone: hours without light, hours without water, 1791# hours of presidential broadcasts, hours of lines,' quipped comedian 1792# Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps 1793# half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400 1794# https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE 1795# 1796# From Matt Johnson (2016-04-20): 1797# ... published in the official Gazette [2016-04-18], here: 1798# http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf 1799 1800# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1801Zone America/Caracas -4:27:44 - LMT 1890 1802 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1803 -4:30 - -0430 1965 Jan 1 0:00 1804 -4:00 - -04 2007 Dec 9 3:00 1805 -4:30 - -0430 2016 May 1 2:30 1806 -4:00 - -04 1807
