southamerica revision 248310
1153761Swollman# <pre> 2192886Sedwin# This file is in the public domain, so clarified as of 3192886Sedwin# 2009-05-17 by Arthur David Olson. 464499Swollman 52742Swollman# This data is by no means authoritative; if you think you know better, 62742Swollman# go ahead and edit the file (and please send any changes to 7243020Sedwin# tz@iana.org for general use in the future). 82742Swollman 9158421Swollman# From Paul Eggert (2006-03-22): 102742Swollman# A good source for time zone historical data outside the U.S. is 11158421Swollman# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 12158421Swollman# San Diego: ACS Publications, Inc. (2003). 132742Swollman# 14248310Sedwin# For data circa 1899, a common source is: 15248310Sedwin# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 16248310Sedwin# <http://www.jstor.org/stable/1774359>. 17248310Sedwin# 1886222Swollman# Gwillim Law writes that a good source 1920094Swollman# for recent time zone data is the International Air Transport 2020094Swollman# Association's Standard Schedules Information Manual (IATA SSIM), 2120094Swollman# published semiannually. Law sent in several helpful summaries 2220094Swollman# of the IATA's data after 1990. 2320094Swollman# 24158421Swollman# Except where otherwise noted, Shanks & Pottenger is the source for 25158421Swollman# entries through 1990, and IATA SSIM is the source for entries afterwards. 2620094Swollman# 2719878Swollman# Earlier editions of these tables used the North American style (e.g. ARST and 2819878Swollman# ARDT for Argentine Standard and Daylight Time), but the following quote 2919878Swollman# suggests that it's better to use European style (e.g. ART and ARST). 3019878Swollman# I suggest the use of _Summer time_ instead of the more cumbersome 3119878Swollman# _daylight-saving time_. _Summer time_ seems to be in general use 3219878Swollman# in Europe and South America. 3319878Swollman# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 3419878Swollman# H L Mencken, _The American Language: Supplement I_ (1960), p 466 3558787Sru# 3658787Sru# Earlier editions of these tables also used the North American style 3758787Sru# for time zones in Brazil, but this was incorrect, as Brazilians say 3858787Sru# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 3958787Sru# the railroad sector, writes (1999-07-06): 4058787Sru# The subject of time zones is currently a matter of discussion/debate in 4158787Sru# Brazil. Let's say that "the Brasilia time" is considered the 4258787Sru# "official time" because Brasilia is the capital city. 4358787Sru# The other three time zones are called "Brasilia time "minus one" or 4458787Sru# "plus one" or "plus two". As far as I know there is no such 4558787Sru# name/designation as "Eastern Time" or "Central Time". 4658787Sru# So I invented the following (English-language) abbreviations for now. 4758787Sru# Corrections are welcome! 4858787Sru# std dst 4958787Sru# -2:00 FNT FNST Fernando de Noronha 5058787Sru# -3:00 BRT BRST Brasilia 5158787Sru# -4:00 AMT AMST Amazon 5258787Sru# -5:00 ACT ACST Acre 532742Swollman 542742Swollman############################################################################### 552742Swollman 562742Swollman############################################################################### 572742Swollman 582742Swollman# Argentina 592742Swollman 6019878Swollman# From Bob Devine (1988-01-28): 612742Swollman# Argentina: first Sunday in October to first Sunday in April since 1976. 622742Swollman# Double Summer time from 1969 to 1974. Switches at midnight. 632742Swollman 6419878Swollman# From U. S. Naval Observatory (1988-01-199): 652742Swollman# ARGENTINA 3 H BEHIND UTC 662742Swollman 67149514Swollman# From Hernan G. Otero (1995-06-26): 6821217Swollman# I am sending modifications to the Argentine time zone table... 699908Swollman# AR was chosen because they are the ISO letters that represent Argentina. 709908Swollman 712742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 7219878SwollmanRule Arg 1930 only - Dec 1 0:00 1:00 S 7319878SwollmanRule Arg 1931 only - Apr 1 0:00 0 - 7419878SwollmanRule Arg 1931 only - Oct 15 0:00 1:00 S 7519878SwollmanRule Arg 1932 1940 - Mar 1 0:00 0 - 7619878SwollmanRule Arg 1932 1939 - Nov 1 0:00 1:00 S 7719878SwollmanRule Arg 1940 only - Jul 1 0:00 1:00 S 7819878SwollmanRule Arg 1941 only - Jun 15 0:00 0 - 7919878SwollmanRule Arg 1941 only - Oct 15 0:00 1:00 S 8019878SwollmanRule Arg 1943 only - Aug 1 0:00 0 - 8119878SwollmanRule Arg 1943 only - Oct 15 0:00 1:00 S 8219878SwollmanRule Arg 1946 only - Mar 1 0:00 0 - 8319878SwollmanRule Arg 1946 only - Oct 1 0:00 1:00 S 8419878SwollmanRule Arg 1963 only - Oct 1 0:00 0 - 8519878SwollmanRule Arg 1963 only - Dec 15 0:00 1:00 S 8619878SwollmanRule Arg 1964 1966 - Mar 1 0:00 0 - 8719878SwollmanRule Arg 1964 1966 - Oct 15 0:00 1:00 S 8893799SwollmanRule Arg 1967 only - Apr 2 0:00 0 - 8958787SruRule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 9058787SruRule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 9119878SwollmanRule Arg 1974 only - Jan 23 0:00 1:00 S 9219878SwollmanRule Arg 1974 only - May 1 0:00 0 - 9319878SwollmanRule Arg 1988 only - Dec 1 0:00 1:00 S 949908Swollman# 95149514Swollman# From Hernan G. Otero (1995-06-26): 969908Swollman# These corrections were contributed by InterSoft Argentina S.A., 979908Swollman# obtaining the data from the: 989908Swollman# Talleres de Hidrografia Naval Argentina 9921217Swollman# (Argentine Naval Hydrography Institute) 10019878SwollmanRule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 10119878SwollmanRule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 1029908Swollman# 103149514Swollman# From Hernan G. Otero (1995-06-26): 1049908Swollman# From this moment on, the law that mandated the daylight saving 1059908Swollman# time corrections was derogated and no more modifications 1069908Swollman# to the time zones (for daylight saving) are now made. 1079908Swollman# 10858787Sru# From Rives McDow (2000-01-10): 10958787Sru# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 11058787Sru# which did not result in the switch of a time zone, as they stayed 9 hours 11164499Swollman# from the International Date Line. 11264499SwollmanRule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 113175034Sedwin# From Paul Eggert (2007-12-28): 114175034Sedwin# DST was set to expire on March 5, not March 3, but since it was converted 115175034Sedwin# to standard time on March 3 it's more convenient for us to pretend that 116175034Sedwin# it ended on March 3. 117175034SedwinRule Arg 2000 only - Mar 3 0:00 0 - 11858787Sru# 11958787Sru# From Peter Gradelski via Steffen Thorsen (2000-03-01): 12067578Swollman# We just checked with our Sao Paulo office and they say the government of 12158787Sru# Argentina decided not to become one of the countries that go on or off DST. 12258787Sru# So Buenos Aires should be -3 hours from GMT at all times. 12358787Sru# 124149514Swollman# From Fabian L. Arce Jofre (2000-04-04): 12564499Swollman# The law that claimed DST for Argentina was derogated by President Fernando 12664499Swollman# de la Rua on March 2, 2000, because it would make people spend more energy 12764499Swollman# in the winter time, rather than less. The change took effect on March 3. 12864499Swollman# 12986222Swollman# From Mariano Absatz (2001-06-06): 13086222Swollman# one of the major newspapers here in Argentina said that the 1999 13186222Swollman# Timezone Law (which never was effectively applied) will (would?) be 13286222Swollman# in effect.... The article is at 13386222Swollman# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 13486222Swollman# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 13586222Swollman# 1999-09-17, and published 1999-09-21. The official publication is at: 13686222Swollman# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 13786222Swollman# Regretfully, you have to subscribe (and pay) for the on-line version.... 13886222Swollman# 13986222Swollman# (2001-06-12): 14086222Swollman# the timezone for Argentina will not change next Sunday. 14186222Swollman# Apparently it will do so on Sunday 24th.... 14286222Swollman# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 14386222Swollman# 14486222Swollman# (2001-06-25): 14586222Swollman# Last Friday (yes, the last working day before the date of the change), the 14686222Swollman# Senate annulled the 1999 law that introduced the changes later postponed. 14786222Swollman# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 14886222Swollman# It remains the vote of the Deputies..., but it will be the same.... 14986222Swollman# This kind of things had always been done this way in Argentina. 15086222Swollman# We are still -03:00 all year round in all of the country. 15186222Swollman# 152175034Sedwin# From Steffen Thorsen (2007-12-21): 153175034Sedwin# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 154175034Sedwin# all of the country (all Zone-entries) are affected. News reports like 155175034Sedwin# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 156175034Sedwin# that Argentina will use DST next year as well, from October to 157175034Sedwin# March, although exact rules are not given. 158175034Sedwin# 159175034Sedwin# From Jesper Norgaard Welen (2007-12-26) 160175034Sedwin# The last hurdle of Argentina DST is over, the proposal was approved in 161175034Sedwin# the lower chamber too (Deputados) with a vote 192 for and 2 against. 162175034Sedwin# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 163175034Sedwin# the original scanned proposal, where the dates and the zero hours are 164175034Sedwin# clear and unambiguous...This is the article about final approval: 165175034Sedwin# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 166175034Sedwin# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 167175034Sedwin# </a> 168175034Sedwin# 169175034Sedwin# From Paul Eggert (2007-12-22): 170175034Sedwin# For dates after mid-2008, the following rules are my guesses and 171175034Sedwin# are quite possibly wrong, but are more likely than no DST at all. 172183066Sedwin 173183066Sedwin# From Alexander Krivenyshev (2008-09-05): 174183066Sedwin# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 175183066Sedwin# Argentina will start DST on Sunday October 19, 2008. 176183066Sedwin# 177183066Sedwin# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 178183066Sedwin# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 179183066Sedwin# </a> 180183066Sedwin# OR 181183066Sedwin# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 182183066Sedwin# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 183183066Sedwin# </a> 184183066Sedwin 185183864Sedwin# From Rodrigo Severo (2008-10-06): 186183864Sedwin# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 187183864Sedwin# ... 188183864Sedwin# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 189183864Sedwin# Hi, there is a problem with timezone-data-2008e and maybe with 190183864Sedwin# timezone-data-2008f 191183864Sedwin# Argentinian law [Number] 25.155 is no longer valid. 192183864Sedwin# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 193183864Sedwin# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 194183864Sedwin# </a> 195183864Sedwin# The new one is law [Number] 26.350 196183864Sedwin# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 197183864Sedwin# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 198183864Sedwin# </a> 199183864Sedwin# So there is no summer time in Argentina for now. 200183864Sedwin 201184406Sedwin# From Mariano Absatz (2008-10-20): 202184406Sedwin# Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 203184406Sedwin# From 2008-10-19 until 2009-03-15 204184406Sedwin# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 205184406Sedwin# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 206184406Sedwin# </a> 207184406Sedwin# 208184406Sedwin# Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 209184406Sedwin# Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 210184406Sedwin# and Tierra del Fuego 211184406Sedwin# <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 212184406Sedwin# http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 213184406Sedwin# </a> 214184406Sedwin# 215184406Sedwin# Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 216184406Sedwin# it will not apply DST either (even when it was not included in Decree 1705/2008) 217184406Sedwin# <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 218184406Sedwin# http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 219184406Sedwin# </a> 220184406Sedwin 221198515Sedwin# From fullinet (2009-10-18): 222198515Sedwin# As announced in 223198515Sedwin# <a hef="http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356"> 224198515Sedwin# http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 225198515Sedwin# </a> 226198515Sedwin# (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change") 227198515Sedwin# 228198515Sedwin# "Por el momento, el Gobierno Nacional resolvio no modificar la hora 229198515Sedwin# oficial, decision que estaba en estudio para su implementacion el 230198515Sedwin# domingo 18 de octubre. Desde el Ministerio de Planificacion se anuncio 231198515Sedwin# que la Argentina hoy, en estas condiciones meteorologicas, no necesita 232198515Sedwin# la modificacion del huso horario, ya que 2009 nos encuentra con 233198515Sedwin# crecimiento en la produccion y distribucion energetica." 234198515Sedwin 235175034SedwinRule Arg 2007 only - Dec 30 0:00 1:00 S 236198515SedwinRule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 237198515SedwinRule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 238240461Sedwin 239136638Swollman# From Mariano Absatz (2004-05-21): 240136638Swollman# Today it was officially published that the Province of Mendoza is changing 241136638Swollman# its timezone this winter... starting tomorrow night.... 242136638Swollman# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 243136638Swollman# From Paul Eggert (2004-05-24): 244136638Swollman# It's Law No. 7,210. This change is due to a public power emergency, so for 245136638Swollman# now we'll assume it's for this year only. 24693799Swollman# 247158421Swollman# From Paul Eggert (2006-03-22): 24893799Swollman# <a href="http://www.spicasc.net/horvera.html"> 249158421Swollman# Hora de verano para la Republica Argentina (2003-06-08) 25093799Swollman# </a> says that standard time in Argentina from 1894-10-31 25193799Swollman# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 252158421Swollman# over Shanks & Pottenger. 253136638Swollman# 254136638Swollman# From Mariano Absatz (2004-06-05): 255136638Swollman# These media articles from a major newspaper mostly cover the current state: 256136638Swollman# http://www.lanacion.com.ar/04/05/27/de_604825.asp 257136638Swollman# http://www.lanacion.com.ar/04/05/28/de_605203.asp 258136638Swollman# 259136638Swollman# The following eight (8) provinces pulled clocks back to UTC-04:00 at 260136638Swollman# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 261136638Swollman# Apparently, all nine provinces would go back to UTC-03:00 at the same 262136638Swollman# time in October 17th. 263136638Swollman# 264136638Swollman# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 265136638Swollman# Tierra del Fuego, Tucuman. 266136638Swollman# 267136638Swollman# From Mariano Absatz (2004-06-14): 268136638Swollman# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 269136638Swollman# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 270136638Swollman# annoyance with the change is much higher than the power savings obtained.... 271136638Swollman# 272136638Swollman# From Gwillim Law (2004-06-14): 273136638Swollman# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 274136638Swollman# "The time change in Tierra del Fuego was a conflicted decision from 275136638Swollman# the start. The government had decreed that the measure would take 276136638Swollman# effect on June 1, but a normative error forced the new time to begin 277136638Swollman# three days earlier, from a Saturday to a Sunday.... 278136638Swollman# Our understanding was that the change was originally scheduled to take place 279136638Swollman# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 280136638Swollman# provinces). Sunday was May 30, only two days earlier. So the article 281136638Swollman# contains a contradiction. I would give more credence to the Saturday/Sunday 282136638Swollman# date than the "three days earlier" phrase, and conclude that Tierra del 283136638Swollman# Fuego set its clocks back at 2004-05-30 00:00. 284136638Swollman# 285136638Swollman# From Steffen Thorsen (2004-10-05): 286136638Swollman# The previous law 7210 which changed the province of Mendoza's time zone 287136638Swollman# back in May have been modified slightly in a new law 7277, which set the 288136638Swollman# new end date to 2004-09-26 (original date was 2004-10-17). 289136638Swollman# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 290136638Swollman# 291136638Swollman# From Mariano Absatz (2004-10-05): 292136638Swollman# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 293136638Swollman# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 294136638Swollman# at midnight between Saturday, July 24th and Sunday, July 25th.... 295136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 296136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 297136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 29893799Swollman 299177591Sedwin# From Alex Krivenyshev (2008-01-17): 300177591Sedwin# Here are articles that Argentina Province San Luis is planning to end DST 301177591Sedwin# as earlier as upcoming Monday January 21, 2008 or February 2008: 302177591Sedwin# 303177591Sedwin# Provincia argentina retrasa reloj y marca diferencia con resto del pais 304177591Sedwin# (Argentine Province delayed clock and mark difference with the rest of the 305177591Sedwin# country) 306177591Sedwin# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 307177591Sedwin# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 308177591Sedwin# </a> 309177591Sedwin# 310177591Sedwin# Es inminente que en San Luis atrasen una hora los relojes 311177591Sedwin# (It is imminent in San Luis clocks one hour delay) 312177591Sedwin# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 313177591Sedwin# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 314177591Sedwin# </a> 315177591Sedwin# 316177591Sedwin# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 317177591Sedwin# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 318177591Sedwin# </a> 319177591Sedwin 320177591Sedwin# From Jesper Norgaard Welen (2008-01-18): 321177591Sedwin# The page of the San Luis provincial government 322177591Sedwin# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 323177591Sedwin# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 324177591Sedwin# </a> 325177591Sedwin# confirms what Alex Krivenyshev has earlier sent to the tz 326177591Sedwin# emailing list about that San Luis plans to return to standard 327177591Sedwin# time much earlier than the rest of the country. It also 328240461Sedwin# confirms that upon request the provinces San Juan and Mendoza 329240461Sedwin# refused to follow San Luis in this change. 330240461Sedwin# 331177591Sedwin# The change is supposed to take place Monday the 21.st at 0:00 332177591Sedwin# hours. As far as I understand it if this goes ahead, we need 333177591Sedwin# a new timezone for San Luis (although there are also documented 334177591Sedwin# independent changes in the southamerica file of San Luis in 335177591Sedwin# 1990 and 1991 which has not been confirmed). 336177591Sedwin 337177591Sedwin# From Jesper Norgaard Welen (2008-01-25): 338177591Sedwin# Unfortunately the below page has become defunct, about the San Luis 339177591Sedwin# time change. Perhaps because it now is part of a group of pages "Most 340177591Sedwin# important pages of 2008." 341177591Sedwin# 342177591Sedwin# You can use 343177591Sedwin# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 344177591Sedwin# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 345177591Sedwin# </a> 346177591Sedwin# instead it seems. Or use "Buscador" from the main page of the San Luis 347177591Sedwin# government, and fill in "huso" and click OK, and you will get 3 pages 348177591Sedwin# from which the first one is identical to the above. 349177591Sedwin 350177591Sedwin# From Mariano Absatz (2008-01-28): 351177591Sedwin# I can confirm that the Province of San Luis (and so far only that 352177591Sedwin# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 353177591Sedwin# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 354177591Sedwin# 1 hour), and they intend to keep UTC-3 as their timezone all year round 355177591Sedwin# (that is, unless they change their mind any minute now). 356177591Sedwin# 357177591Sedwin# So we'll have to add yet another city to 'southamerica' (I think San 358177591Sedwin# Luis city is the mos populated city in the Province, so it'd be 359177591Sedwin# America/Argentina/San_Luis... of course I can't remember if San Luis's 360177591Sedwin# history of particular changes goes along with Mendoza or San Juan :-( 361177591Sedwin# (I only remember not being able to collect hard facts about San Luis 362177591Sedwin# back in 2004, when these provinces changed to UTC-4 for a few days, I 363177591Sedwin# mailed them personally and never got an answer). 364177591Sedwin 365181421Sedwin# From Paul Eggert (2008-06-30): 366158421Swollman# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 367158421Swollman# from the IATA otherwise. As noted below, Shanks & Pottenger say that 368181421Sedwin# America/Cordoba split into 6 subregions during 1991/1992, one of which 369181421Sedwin# was America/San_Luis, but we haven't verified this yet so for now we'll 370181421Sedwin# keep America/Cordoba a single region rather than splitting it into the 371181421Sedwin# other 5 subregions. 372181421Sedwin 373190372Sedwin# From Mariano Absatz (2009-03-13): 374190372Sedwin# Yesterday (with our usual 2-day notice) the Province of San Luis 375190372Sedwin# decided that next Sunday instead of "staying" @utc-03:00 they will go 376190372Sedwin# to utc-04:00 until the second Saturday in October... 37793799Swollman# 378190372Sedwin# The press release is at 379190372Sedwin# <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 380190372Sedwin# http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 381190372Sedwin# </a> 382190372Sedwin# (I couldn't find the decree, but 383190372Sedwin# <a href="http://www.sanluis.gov.ar"> 384190372Sedwin# www.sanluis.gov.ar 385190372Sedwin# <a/> 386190372Sedwin# is the official page for the Province Government). 387190372Sedwin# 388248310Sedwin# There's also a note in only one of the major national papers ... 389190372Sedwin# http://www.lanacion.com.ar/nota.asp?nota_id=1107912 390240461Sedwin# 391248310Sedwin# The press release says [quick and dirty translation]: 392248310Sedwin# ... announced that next Sunday, at 00:00, Puntanos (the San Luis 393190372Sedwin# inhabitants) will have to turn back one hour their clocks 394190372Sedwin# 395190372Sedwin# Since then, San Luis will establish its own Province timezone. Thus, 396190372Sedwin# during 2009, this timezone change will run from 00:00 the third Sunday 397190372Sedwin# in March until 24:00 of the second Saturday in October. 398190372Sedwin 399198515Sedwin# From Mariano Absatz (2009-10-16): 400198515Sedwin# ...the Province of San Luis is a case in itself. 401190372Sedwin# 402198515Sedwin# The Law at 403198515Sedwin# <a href="http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276>" 404198515Sedwin# http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 405197597Sedwin# </a> 406198515Sedwin# is ambiguous because establishes a calendar from the 2nd Sunday in 407198515Sedwin# October at 0:00 thru the 2nd Saturday in March at 24:00 and the 408198515Sedwin# complement of that starting on the 2nd Sunday of March at 0:00 and 409198515Sedwin# ending on the 2nd Saturday of March at 24:00. 410197597Sedwin# 411198515Sedwin# This clearly breaks every time the 1st of March or October is a Sunday. 412197597Sedwin# 413198515Sedwin# IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 414198515Sedwin# Sunday of October and March. 415198515Sedwin# 416198515Sedwin# The problem is that the changes in the rest of the Provinces that did 417198515Sedwin# change in 2007/2008, were made according to the Federal Law and Decrees 418198515Sedwin# that did so on the 3rd Sunday of October and March. 419198515Sedwin# 420198515Sedwin# In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 421198515Sedwin# (October 11th) at 0:00. 422198515Sedwin# 423198515Sedwin# So I guess a new set of rules, besides "Arg", must be made and the last 424198515Sedwin# America/Argentina/San_Luis entries should change to use these... 425198515Sedwin# 426198515Sedwin# I'm enclosing a patch that does what I say... regretfully, the San Luis 427198515Sedwin# timezone must be called "WART/WARST" even when most of the time (like, 428198515Sedwin# right now) WARST == ART... that is, since last Sunday, all the country 429198515Sedwin# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 430198515Sedwin# of the country calls it "ART". 431198515Sedwin# ... 432197597Sedwin 433206868Sedwin# From Alexander Krivenyshev (2010-04-09): 434206868Sedwin# According to news reports from El Diario de la Republica Province San 435206868Sedwin# Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 436206868Sedwin# after April 11, 2010--will continue to have same time as rest of 437206868Sedwin# Argentina (UTC-3) (no DST). 438206868Sedwin# 439206868Sedwin# Confirmaron la prórroga del huso horario de verano (Spanish) 440206868Sedwin# <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9"> 441206868Sedwin# http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 442206868Sedwin# </a> 443206868Sedwin# or (some English translation): 444206868Sedwin# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html"> 445206868Sedwin# http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 446206868Sedwin# </a> 447206868Sedwin 448206868Sedwin# From Mariano Absatz (2010-04-12): 449206868Sedwin# yes...I can confirm this...and given that San Luis keeps calling 450206868Sedwin# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 451206868Sedwin# rules...San Luis is still using "Western ARgentina Time" and it got 452206868Sedwin# stuck on Summer daylight savings time even though the summer is over. 453206868Sedwin 454248310Sedwin# From Paul Eggert (2013-02-21): 455248310Sedwin# Milne says Cordoba time was -4:16:48.2. Round to the nearest second. 456248310Sedwin 4572742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 45820094Swollman# 459136638Swollman# Buenos Aires (BA), Capital Federal (CF), 460136638SwollmanZone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 46193799Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 46219878Swollman -4:00 - ART 1930 Dec 46358787Sru -4:00 Arg AR%sT 1969 Oct 5 46493799Swollman -3:00 Arg AR%sT 1999 Oct 3 46593799Swollman -4:00 Arg AR%sT 2000 Mar 3 466175034Sedwin -3:00 Arg AR%sT 46720094Swollman# 468184406Sedwin# Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 469184406Sedwin# Chaco (CC), Formosa (FM), Santiago del Estero (SE) 47020094Swollman# 471158421Swollman# Shanks & Pottenger also make the following claims, which we haven't verified: 47293799Swollman# - Formosa switched to -3:00 on 1991-01-07. 47393799Swollman# - Misiones switched to -3:00 on 1990-12-29. 47493799Swollman# - Chaco switched to -3:00 on 1991-01-04. 47593799Swollman# - Santiago del Estero switched to -4:00 on 1991-04-01, 47693799Swollman# then to -3:00 on 1991-04-26. 47793799Swollman# 478136638SwollmanZone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 47993799Swollman -4:16:48 - CMT 1920 May 48020094Swollman -4:00 - ART 1930 Dec 48158787Sru -4:00 Arg AR%sT 1969 Oct 5 48293799Swollman -3:00 Arg AR%sT 1991 Mar 3 48393799Swollman -4:00 - WART 1991 Oct 20 48493799Swollman -3:00 Arg AR%sT 1999 Oct 3 48593799Swollman -4:00 Arg AR%sT 2000 Mar 3 486175034Sedwin -3:00 Arg AR%sT 48720094Swollman# 488184406Sedwin# Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 489184406SedwinZone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 490184406Sedwin -4:16:48 - CMT 1920 May 491184406Sedwin -4:00 - ART 1930 Dec 492184406Sedwin -4:00 Arg AR%sT 1969 Oct 5 493184406Sedwin -3:00 Arg AR%sT 1991 Mar 3 494184406Sedwin -4:00 - WART 1991 Oct 20 495184406Sedwin -3:00 Arg AR%sT 1999 Oct 3 496184406Sedwin -4:00 Arg AR%sT 2000 Mar 3 497184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 498184406Sedwin -3:00 - ART 499184406Sedwin# 500136638Swollman# Tucuman (TM) 501136638SwollmanZone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 502136638Swollman -4:16:48 - CMT 1920 May 503136638Swollman -4:00 - ART 1930 Dec 504136638Swollman -4:00 Arg AR%sT 1969 Oct 5 505136638Swollman -3:00 Arg AR%sT 1991 Mar 3 506136638Swollman -4:00 - WART 1991 Oct 20 507136638Swollman -3:00 Arg AR%sT 1999 Oct 3 508136638Swollman -4:00 Arg AR%sT 2000 Mar 3 509136638Swollman -3:00 - ART 2004 Jun 1 510136638Swollman -4:00 - WART 2004 Jun 13 511175034Sedwin -3:00 Arg AR%sT 512136638Swollman# 513136638Swollman# La Rioja (LR) 514136638SwollmanZone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 515136638Swollman -4:16:48 - CMT 1920 May 516136638Swollman -4:00 - ART 1930 Dec 517136638Swollman -4:00 Arg AR%sT 1969 Oct 5 518136638Swollman -3:00 Arg AR%sT 1991 Mar 1 519136638Swollman -4:00 - WART 1991 May 7 520136638Swollman -3:00 Arg AR%sT 1999 Oct 3 521136638Swollman -4:00 Arg AR%sT 2000 Mar 3 522136638Swollman -3:00 - ART 2004 Jun 1 523136638Swollman -4:00 - WART 2004 Jun 20 524184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 525184406Sedwin -3:00 - ART 526136638Swollman# 527136638Swollman# San Juan (SJ) 528136638SwollmanZone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 529136638Swollman -4:16:48 - CMT 1920 May 530136638Swollman -4:00 - ART 1930 Dec 531136638Swollman -4:00 Arg AR%sT 1969 Oct 5 532136638Swollman -3:00 Arg AR%sT 1991 Mar 1 533136638Swollman -4:00 - WART 1991 May 7 534136638Swollman -3:00 Arg AR%sT 1999 Oct 3 535136638Swollman -4:00 Arg AR%sT 2000 Mar 3 536136638Swollman -3:00 - ART 2004 May 31 537136638Swollman -4:00 - WART 2004 Jul 25 538184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 539184406Sedwin -3:00 - ART 540136638Swollman# 54120094Swollman# Jujuy (JY) 542136638SwollmanZone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 54393799Swollman -4:16:48 - CMT 1920 May 54420094Swollman -4:00 - ART 1930 Dec 54520094Swollman -4:00 Arg AR%sT 1969 Oct 5 54693799Swollman -3:00 Arg AR%sT 1990 Mar 4 54793799Swollman -4:00 - WART 1990 Oct 28 54893799Swollman -4:00 1:00 WARST 1991 Mar 17 54920094Swollman -4:00 - WART 1991 Oct 6 55093799Swollman -3:00 1:00 ARST 1992 55193799Swollman -3:00 Arg AR%sT 1999 Oct 3 55293799Swollman -4:00 Arg AR%sT 2000 Mar 3 553184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 554184406Sedwin -3:00 - ART 55520094Swollman# 556149514Swollman# Catamarca (CT), Chubut (CH) 557136638SwollmanZone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 55893799Swollman -4:16:48 - CMT 1920 May 55920094Swollman -4:00 - ART 1930 Dec 56058787Sru -4:00 Arg AR%sT 1969 Oct 5 56193799Swollman -3:00 Arg AR%sT 1991 Mar 3 56293799Swollman -4:00 - WART 1991 Oct 20 56393799Swollman -3:00 Arg AR%sT 1999 Oct 3 56493799Swollman -4:00 Arg AR%sT 2000 Mar 3 565136638Swollman -3:00 - ART 2004 Jun 1 566136638Swollman -4:00 - WART 2004 Jun 20 567184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 568184406Sedwin -3:00 - ART 56920094Swollman# 57020094Swollman# Mendoza (MZ) 571136638SwollmanZone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 57293799Swollman -4:16:48 - CMT 1920 May 57320094Swollman -4:00 - ART 1930 Dec 57420094Swollman -4:00 Arg AR%sT 1969 Oct 5 57593799Swollman -3:00 Arg AR%sT 1990 Mar 4 57693799Swollman -4:00 - WART 1990 Oct 15 57793799Swollman -4:00 1:00 WARST 1991 Mar 1 57820094Swollman -4:00 - WART 1991 Oct 15 57920094Swollman -4:00 1:00 WARST 1992 Mar 1 58020094Swollman -4:00 - WART 1992 Oct 18 58193799Swollman -3:00 Arg AR%sT 1999 Oct 3 58293799Swollman -4:00 Arg AR%sT 2000 Mar 3 583136638Swollman -3:00 - ART 2004 May 23 584136638Swollman -4:00 - WART 2004 Sep 26 585184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 586184406Sedwin -3:00 - ART 587136638Swollman# 588177591Sedwin# San Luis (SL) 589198515Sedwin 590206868SedwinRule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 591206868SedwinRule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S 592198515Sedwin 593177591SedwinZone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 594177591Sedwin -4:16:48 - CMT 1920 May 595177591Sedwin -4:00 - ART 1930 Dec 596177591Sedwin -4:00 Arg AR%sT 1969 Oct 5 597181421Sedwin -3:00 Arg AR%sT 1990 598181421Sedwin -3:00 1:00 ARST 1990 Mar 14 599181421Sedwin -4:00 - WART 1990 Oct 15 600181421Sedwin -4:00 1:00 WARST 1991 Mar 1 601181421Sedwin -4:00 - WART 1991 Jun 1 602181421Sedwin -3:00 - ART 1999 Oct 3 603181421Sedwin -4:00 1:00 WARST 2000 Mar 3 604177591Sedwin -3:00 - ART 2004 May 31 605177591Sedwin -4:00 - WART 2004 Jul 25 606177591Sedwin -3:00 Arg AR%sT 2008 Jan 21 607198515Sedwin -4:00 SanLuis WAR%sT 608177591Sedwin# 609136638Swollman# Santa Cruz (SC) 610136638SwollmanZone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 611136638Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 612136638Swollman -4:00 - ART 1930 Dec 613136638Swollman -4:00 Arg AR%sT 1969 Oct 5 614136638Swollman -3:00 Arg AR%sT 1999 Oct 3 615136638Swollman -4:00 Arg AR%sT 2000 Mar 3 616136638Swollman -3:00 - ART 2004 Jun 1 617136638Swollman -4:00 - WART 2004 Jun 20 618184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 619184406Sedwin -3:00 - ART 620136638Swollman# 621136638Swollman# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 622136638SwollmanZone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 623136638Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 624136638Swollman -4:00 - ART 1930 Dec 625136638Swollman -4:00 Arg AR%sT 1969 Oct 5 626136638Swollman -3:00 Arg AR%sT 1999 Oct 3 627136638Swollman -4:00 Arg AR%sT 2000 Mar 3 628136638Swollman -3:00 - ART 2004 May 30 629136638Swollman -4:00 - WART 2004 Jun 20 630184406Sedwin -3:00 Arg AR%sT 2008 Oct 18 631184406Sedwin -3:00 - ART 6328029Swollman 63314343Swollman# Aruba 63414343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 63514343SwollmanZone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 63619878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 63714343Swollman -4:00 - AST 63814343Swollman 6392742Swollman# Bolivia 6402742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 6412742SwollmanZone America/La_Paz -4:32:36 - LMT 1890 64286222Swollman -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 64319878Swollman -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 64419878Swollman -4:00 - BOT # Bolivia Time 6452742Swollman 6462742Swollman# Brazil 6472742Swollman 648149514Swollman# From Paul Eggert (1993-11-18): 6492742Swollman# The mayor of Rio recently attempted to change the time zone rules 6502742Swollman# just in his city, in order to leave more summer time for the tourist trade. 6512742Swollman# The rule change lasted only part of the day; 6522742Swollman# the federal government refused to follow the city's rules, and business 6532742Swollman# was in a chaos, so the mayor backed down that afternoon. 6542742Swollman 65520094Swollman# From IATA SSIM (1996-02): 65620094Swollman# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 65720094Swollman# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 65820094Swollman# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 65920094Swollman# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 66020094Swollman# [The last three states are new to this issue of the IATA SSIM.] 66120094Swollman 66220094Swollman# From Gwillim Law (1996-10-07): 66320094Swollman# Geography, history (Tocantins was part of Goias until 1989), and other 66420094Swollman# sources of time zone information lead me to believe that AL, SE, and TO were 66520094Swollman# always in BR1, and so the only change was whether or not they observed DST.... 66620094Swollman# The earliest issue of the SSIM I have is 2/91. Each issue from then until 66720094Swollman# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 66820094Swollman# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 66920094Swollman# (UTC-4).... The other two time zones given for Brazil are BR3, which is 67020094Swollman# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 67120094Swollman# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 67220094Swollman# become part of the state of Pernambuco). The boundary between BR1 and BR2 67320094Swollman# has never been clearly stated. They've simply been called East and West. 67420094Swollman# However, some conclusions can be drawn from another IATA manual: the Airline 67520094Swollman# Coding Directory, which lists close to 400 airports in Brazil. For each 67620094Swollman# airport it gives a time zone which is coded to the SSIM. From that 67720094Swollman# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 67820094Swollman# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 67920094Swollman# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 68020094Swollman 68143014Swollman# From Marcos Tadeu (1998-09-27): 68243014Swollman# <a href="http://pcdsh01.on.br/verao1.html"> 68343014Swollman# Brazilian official page 68443014Swollman# </a> 68575267Swollman 68675267Swollman# From Jesper Norgaard (2000-11-03): 68775267Swollman# [For an official list of which regions in Brazil use which time zones, see:] 68875267Swollman# http://pcdsh01.on.br/Fusbr.htm 68975267Swollman# http://pcdsh01.on.br/Fusbrhv.htm 69075267Swollman 691105196Swollman# From Celso Doria via David Madeo (2002-10-09): 692105196Swollman# The reason for the delay this year has to do with elections in Brazil. 693105196Swollman# 694105196Swollman# Unlike in the United States, elections in Brazil are 100% computerized and 695105196Swollman# the results are known almost immediately. Yesterday, it was the first 696105196Swollman# round of the elections when 115 million Brazilians voted for President, 697105196Swollman# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 698105196Swollman# counting (or re-counting) votes anymore and we know there will be a second 699105196Swollman# round for the Presidency and also for some Governors. The 2nd round will 700105196Swollman# take place on October 27th. 701105196Swollman# 702105196Swollman# The reason why the DST will only begin November 3rd is that the thousands 703105196Swollman# of electoral machines used cannot have their time changed, and since the 704105196Swollman# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 705105196Swollman# the Government decided to postpone DST, instead of changing the Constitution 706105196Swollman# (maybe, for the next elections, it will be possible to change the clock)... 707105196Swollman 708136638Swollman# From Rodrigo Severo (2004-10-04): 709136638Swollman# It's just the biannual change made necessary by the much hyped, supposedly 710136638Swollman# modern Brazilian eletronic voting machines which, apparently, can't deal 711136638Swollman# with a time change between the first and the second rounds of the elections. 712136638Swollman 713172479Sedwin# From Steffen Thorsen (2007-09-20): 714172479Sedwin# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 715172479Sedwin# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 716172479Sedwin 717181421Sedwin# From Paul Schulze (2008-06-24): 718181421Sedwin# ...by law number 11.662 of April 24, 2008 (published in the "Diario 719181421Sedwin# Oficial da Uniao"...) in Brazil there are changes in the timezones, 720181421Sedwin# effective today (00:00am at June 24, 2008) as follows: 721181421Sedwin# 722181421Sedwin# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 723181421Sedwin# part of the Amazonas state that had this timezone now being put to the 724181421Sedwin# timezone UTC+4 725181421Sedwin# b) The whole Para state now is put at timezone UTC+3, instead of just 726181421Sedwin# part of it, as was before. 727181421Sedwin# 728181421Sedwin# This change follows a proposal of senator Tiao Viana of Acre state, that 729181421Sedwin# proposed it due to concerns about open television channels displaying 730181421Sedwin# programs inappropriate to youths in the states that had the timezone 731181421Sedwin# UTC+5 too early in the night. In the occasion, some more corrections 732181421Sedwin# were proposed, trying to unify the timezones of any given state. This 733181421Sedwin# change modifies timezone rules defined in decree 2.784 of 18 June, 734181421Sedwin# 1913. 735181421Sedwin 736181421Sedwin# From Rodrigo Severo (2008-06-24): 737181421Sedwin# Just correcting the URL: 738192886Sedwin# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> 739192886Sedwin# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 740181421Sedwin# </a> 741181421Sedwin# 742181421Sedwin# As a result of the above Decree I believe the America/Rio_Branco 743181421Sedwin# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 744221092Sedwin# be created to represent the...west side of the Para State. I 745181421Sedwin# suggest this new timezone be called Santarem as the most 746181421Sedwin# important/populated city in the affected area. 747181421Sedwin# 748181421Sedwin# This new timezone would be the same as the Rio_Branco timezone up to 749181421Sedwin# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 750181421Sedwin 751181421Sedwin# From Alex Krivenyshev (2008-06-24): 752181421Sedwin# This is a quick reference page for New and Old Brazil Time Zones map. 753181421Sedwin# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 754181421Sedwin# http://www.worldtimezone.com/brazil-time-new-old.php 755181421Sedwin# </a> 756181421Sedwin# 757181421Sedwin# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 758181421Sedwin# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 759181421Sedwin# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 760181421Sedwin 761105196Swollman# From Paul Eggert (2002-10-10): 762105196Swollman# The official decrees referenced below are mostly taken from 76343014Swollman# <a href="http://pcdsh01.on.br/DecHV.html"> 76443014Swollman# Decretos sobre o Horario de Verao no Brasil 765163302Sru# </a>. 76643014Swollman 767183066Sedwin# From Steffen Thorsen (2008-08-29): 768183066Sedwin# As announced by the government and many newspapers in Brazil late 769183066Sedwin# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 770183066Sedwin# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 771183066Sedwin# past years experience with the elections, there was a good chance that 772183066Sedwin# the start was postponed to November, but it did not happen this year. 773183066Sedwin# 774183066Sedwin# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 775183066Sedwin# 776183066Sedwin# An official page about it: 777183066Sedwin# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 778183066Sedwin# http://www.mme.gov.br/site/news/detail.do?newsId=16722 779183066Sedwin# </a> 780183066Sedwin# Note that this link does not always work directly, but must be accessed 781183066Sedwin# by going to 782183536Sedwin# <a href="http://www.mme.gov.br/first"> 783183066Sedwin# http://www.mme.gov.br/first 784183066Sedwin# </a> 785183066Sedwin# 786183066Sedwin# One example link that works directly: 787183066Sedwin# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 788183066Sedwin# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 789183066Sedwin# (Portuguese) 790183066Sedwin# </a> 791183066Sedwin# 792183066Sedwin# We have a written a short article about it as well: 793183066Sedwin# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 794183066Sedwin# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 795183066Sedwin# </a> 796226298Sedwin# 797226298Sedwin# From Alexander Krivenyshev (2011-10-04): 798226298Sedwin# State Bahia will return to Daylight savings time this year after 8 years off. 799240461Sedwin# The announcement was made by Governor Jaques Wagner in an interview to a 800240461Sedwin# television station in Salvador. 801183066Sedwin 802226298Sedwin# In Portuguese: 803226298Sedwin# <a href="http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html"> 804226298Sedwin# http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 805226298Sedwin# </a> and 806226298Sedwin# <a href="http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html"> 807226298Sedwin# http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 808226298Sedwin# </a> 809226298Sedwin 810226298Sedwin# From Guilherme Bernardes Rodrigues (2011-10-07): 811226298Sedwin# There is news in the media, however there is still no decree about it. 812248310Sedwin# I just send a e-mail to Zulmira Brandao at 813226298Sedwin# <a href="http://pcdsh01.on.br/">http://pcdsh01.on.br/</a> the 814248310Sedwin# official agency about time in Brazil, and she confirmed that the old rule is 815226298Sedwin# still in force. 816226298Sedwin 817226784Sedwin# From Guilherme Bernardes Rodrigues (2011-10-14) 818226784Sedwin# It's official, the President signed a decree that includes Bahia in summer 819226784Sedwin# time. 820226784Sedwin# [ and in a second message (same day): ] 821226784Sedwin# I found the decree. 822226784Sedwin# 823226784Sedwin# DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011 824226784Sedwin# Link : 825226784Sedwin# <a href="http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6"> 826226784Sedwin# http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 827226784Sedwin# </a> 828226784Sedwin 829242212Sedwin# From Kelley Cook (2012-10-16): 830242212Sedwin# The governor of state of Bahia in Brazil announced on Thursday that 831242212Sedwin# due to public pressure, he is reversing the DST policy they implemented 832242212Sedwin# last year and will not be going to Summer Time on October 21st.... 833242212Sedwin# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia 834226784Sedwin 835242212Sedwin# From Rodrigo Severo (2012-10-16): 836242212Sedwin# Tocantins state will have DST. 837242212Sedwin# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html 838242212Sedwin 8392742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 84043543Swollman# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 84143543Swollman# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 84258787SruRule Brazil 1931 only - Oct 3 11:00 1:00 S 84358787SruRule Brazil 1932 1933 - Apr 1 0:00 0 - 84458787SruRule Brazil 1932 only - Oct 3 0:00 1:00 S 84543543Swollman# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 84643014Swollman# revoked DST. 84743543Swollman# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 84843543Swollman# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 84958787SruRule Brazil 1949 1952 - Dec 1 0:00 1:00 S 85058787SruRule Brazil 1950 only - Apr 16 1:00 0 - 85158787SruRule Brazil 1951 1952 - Apr 1 0:00 0 - 85243543Swollman# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 85358787SruRule Brazil 1953 only - Mar 1 0:00 0 - 85443543Swollman# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 85543014Swollman# revoked DST. 85643543Swollman# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 85743543Swollman# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 85843543Swollman# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 85943543Swollman# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 86043543Swollman# extended the above decree to all of the national territory on 12-09. 86158787SruRule Brazil 1963 only - Dec 9 0:00 1:00 S 86243543Swollman# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 86343543Swollman# extended summer time by one day to 1964-03-01 00:00 (start of school). 86458787SruRule Brazil 1964 only - Mar 1 0:00 0 - 86543543Swollman# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 86658787SruRule Brazil 1965 only - Jan 31 0:00 1:00 S 86758787SruRule Brazil 1965 only - Mar 31 0:00 0 - 86843543Swollman# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 86958787SruRule Brazil 1965 only - Dec 1 0:00 1:00 S 87043543Swollman# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 87158787SruRule Brazil 1966 1968 - Mar 1 0:00 0 - 87258787SruRule Brazil 1966 1967 - Nov 1 0:00 1:00 S 87343543Swollman# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 87443543Swollman# revoked DST. 87543543Swollman# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 87658787SruRule Brazil 1985 only - Nov 2 0:00 1:00 S 87743543Swollman# Decree 92,310 (1986-01-21) 87843543Swollman# Decree 92,463 (1986-03-13) 87958787SruRule Brazil 1986 only - Mar 15 0:00 0 - 88043543Swollman# Decree 93,316 (1986-10-01) 88158787SruRule Brazil 1986 only - Oct 25 0:00 1:00 S 88258787SruRule Brazil 1987 only - Feb 14 0:00 0 - 88343543Swollman# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 88458787SruRule Brazil 1987 only - Oct 25 0:00 1:00 S 88558787SruRule Brazil 1988 only - Feb 7 0:00 0 - 88643543Swollman# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 88743543Swollman# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 88858787SruRule Brazil 1988 only - Oct 16 0:00 1:00 S 88958787SruRule Brazil 1989 only - Jan 29 0:00 0 - 89043543Swollman# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 89143543Swollman# with the same exceptions 89258787SruRule Brazil 1989 only - Oct 15 0:00 1:00 S 89358787SruRule Brazil 1990 only - Feb 11 0:00 0 - 89443543Swollman# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 89543543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 89643543Swollman# Decree 99,629 (1990-10-19) adds BA, MT. 89758787SruRule Brazil 1990 only - Oct 21 0:00 1:00 S 89858787SruRule Brazil 1991 only - Feb 17 0:00 0 - 89943543Swollman# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 90043543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 90158787SruRule Brazil 1991 only - Oct 20 0:00 1:00 S 90258787SruRule Brazil 1992 only - Feb 9 0:00 0 - 90343543Swollman# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 90443543Swollman# adopted by same states. 90558787SruRule Brazil 1992 only - Oct 25 0:00 1:00 S 90658787SruRule Brazil 1993 only - Jan 31 0:00 0 - 90743014Swollman# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 90843543Swollman# adopted by same states, plus AM. 909136638Swollman# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 910136638Swollman# web page corrected 2004-01-07) adopted by same states, minus AM. 91143543Swollman# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 912136638Swollman# adopted by same states, plus MT and TO. 91343543Swollman# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 91443543Swollman# adds AL, SE. 91558787SruRule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 91658787SruRule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 91758787SruRule Brazil 1996 only - Feb 11 0:00 0 - 91843543Swollman# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 91943543Swollman# adopted by same states, minus AL, SE. 92058787SruRule Brazil 1996 only - Oct 6 0:00 1:00 S 92158787SruRule Brazil 1997 only - Feb 16 0:00 0 - 922149514Swollman# From Daniel C. Sobral (1998-02-12): 92343014Swollman# In 1997, the DS began on October 6. The stated reason was that 92443014Swollman# because international television networks ignored Brazil's policy on DS, 92543014Swollman# they bought the wrong times on satellite for coverage of Pope's visit. 92643014Swollman# This year, the ending date of DS was postponed to March 1 92743014Swollman# to help dealing with the shortages of electric power. 92843014Swollman# 92943543Swollman# Decree 2,317 (1997-09-04), adopted by same states. 93058787SruRule Brazil 1997 only - Oct 6 0:00 1:00 S 93143543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 93243014Swollman# (1998-02-10) 93358787SruRule Brazil 1998 only - Mar 1 0:00 0 - 93443543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 93558787Sru# adopted by the same states as before. 93658787SruRule Brazil 1998 only - Oct 11 0:00 1:00 S 93758787SruRule Brazil 1999 only - Feb 21 0:00 0 - 93858787Sru# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 93958787Sru# (1999-08-23) adopted by same states. 94058787Sru# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 94167578Swollman# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 94267578SwollmanRule Brazil 1999 only - Oct 3 0:00 1:00 S 94367578SwollmanRule Brazil 2000 only - Feb 27 0:00 0 - 94467578Swollman# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 94567578Swollman# adopted by the same states as before. 94675267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 94775267Swollman# repeals DST in PE and RR, effective 2000-10-15 00:00. 94875267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 94975267Swollman# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 95086222Swollman# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 95186222Swollman# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 952105196SwollmanRule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 953163302SruRule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 954105196Swollman# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 955181421Sedwin# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 956105196SwollmanRule Brazil 2002 only - Nov 3 0:00 1:00 S 957121098Swollman# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 958181421Sedwin# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 959136638SwollmanRule Brazil 2003 only - Oct 19 0:00 1:00 S 960136638Swollman# Decree 5,223 (2004-10-01) reestablishes DST in MT. 961181421Sedwin# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 962136638SwollmanRule Brazil 2004 only - Nov 2 0:00 1:00 S 963153670Swollman# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 964153670Swollman# adopted by the same states as before. 965163302SruRule Brazil 2005 only - Oct 16 0:00 1:00 S 966172479Sedwin# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 967172479Sedwin# adopted by the same states as before. 968172479SedwinRule Brazil 2006 only - Nov 5 0:00 1:00 S 969172479SedwinRule Brazil 2007 only - Feb 25 0:00 0 - 970181421Sedwin# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 971181421Sedwin# adopted by the same states as before. 972183066SedwinRule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 973183536Sedwin# From Frederico A. C. Neves (2008-09-10): 974183536Sedwin# Acording to this decree 975183536Sedwin# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 976183536Sedwin# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 977183536Sedwin# </a> 978183536Sedwin# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 979183536Sedwin# 3rd Feb Sunday. There is an exception on the return date when this is 980183536Sedwin# the Carnival Sunday then the return date will be the next Sunday... 981183536SedwinRule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 982183536SedwinRule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 983183536SedwinRule Brazil 2012 only - Feb Sun>=22 0:00 0 - 984183536SedwinRule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 985183536SedwinRule Brazil 2015 only - Feb Sun>=22 0:00 0 - 986183536SedwinRule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 987183536SedwinRule Brazil 2023 only - Feb Sun>=22 0:00 0 - 988183536SedwinRule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 989183536SedwinRule Brazil 2026 only - Feb Sun>=22 0:00 0 - 990183536SedwinRule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 991183536SedwinRule Brazil 2034 only - Feb Sun>=22 0:00 0 - 992183536SedwinRule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 993183536SedwinRule Brazil 2037 only - Feb Sun>=22 0:00 0 - 994183536Sedwin# From Arthur David Olson (2008-09-29): 995183536Sedwin# The next is wrong in some years but is better than nothing. 996183536SedwinRule Brazil 2038 max - Feb Sun>=15 0:00 0 - 997183536Sedwin 998121098Swollman# The latest ruleset listed above says that the following states observe DST: 999136638Swollman# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 100020094Swollman 10012742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 100220094Swollman# 1003136638Swollman# Fernando de Noronha (administratively part of PE) 10042742SwollmanZone America/Noronha -2:09:40 - LMT 1914 100558787Sru -2:00 Brazil FN%sT 1990 Sep 17 1006136638Swollman -2:00 - FNT 1999 Sep 30 1007136638Swollman -2:00 Brazil FN%sT 2000 Oct 15 1008136638Swollman -2:00 - FNT 2001 Sep 13 1009136638Swollman -2:00 Brazil FN%sT 2002 Oct 1 101058787Sru -2:00 - FNT 1011136638Swollman# Other Atlantic islands have no permanent settlement. 1012136638Swollman# These include Trindade and Martin Vaz (administratively part of ES), 1013136638Swollman# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 1014136638Swollman# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 1015136638Swollman# it also included the Penedos. 101620094Swollman# 101758787Sru# Amapa (AP), east Para (PA) 101875267Swollman# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 1019121098Swollman# The division between east and west Para is the river Xingu. 1020121098Swollman# In the north a very small part from the river Javary (now Jari I guess, 1021121098Swollman# the border with Amapa) to the Amazon, then to the Xingu. 102243543SwollmanZone America/Belem -3:13:56 - LMT 1914 102358787Sru -3:00 Brazil BR%sT 1988 Sep 12 102458787Sru -3:00 - BRT 102543543Swollman# 1026181421Sedwin# west Para (PA) 1027181421Sedwin# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 1028181421SedwinZone America/Santarem -3:38:48 - LMT 1914 1029181421Sedwin -4:00 Brazil AM%sT 1988 Sep 12 1030181421Sedwin -4:00 - AMT 2008 Jun 24 00:00 1031181421Sedwin -3:00 - BRT 1032181421Sedwin# 103358787Sru# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 103475267Swollman# Paraiba (PB) 103520094SwollmanZone America/Fortaleza -2:34:00 - LMT 1914 103658787Sru -3:00 Brazil BR%sT 1990 Sep 17 103758787Sru -3:00 - BRT 1999 Sep 30 103875267Swollman -3:00 Brazil BR%sT 2000 Oct 22 103986222Swollman -3:00 - BRT 2001 Sep 13 1040105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 1041105196Swollman -3:00 - BRT 104220094Swollman# 104375267Swollman# Pernambuco (PE) (except Atlantic islands) 104475267SwollmanZone America/Recife -2:19:36 - LMT 1914 104575267Swollman -3:00 Brazil BR%sT 1990 Sep 17 104675267Swollman -3:00 - BRT 1999 Sep 30 104775267Swollman -3:00 Brazil BR%sT 2000 Oct 15 104886222Swollman -3:00 - BRT 2001 Sep 13 1049105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 1050105196Swollman -3:00 - BRT 105175267Swollman# 105258787Sru# Tocantins (TO) 105343543SwollmanZone America/Araguaina -3:12:48 - LMT 1914 105458787Sru -3:00 Brazil BR%sT 1990 Sep 17 105558787Sru -3:00 - BRT 1995 Sep 14 1056121098Swollman -3:00 Brazil BR%sT 2003 Sep 24 1057242212Sedwin -3:00 - BRT 2012 Oct 21 1058242212Sedwin -3:00 Brazil BR%sT 105920094Swollman# 106058787Sru# Alagoas (AL), Sergipe (SE) 106143543SwollmanZone America/Maceio -2:22:52 - LMT 1914 106258787Sru -3:00 Brazil BR%sT 1990 Sep 17 106358787Sru -3:00 - BRT 1995 Oct 13 106458787Sru -3:00 Brazil BR%sT 1996 Sep 4 106558787Sru -3:00 - BRT 1999 Sep 30 106675267Swollman -3:00 Brazil BR%sT 2000 Oct 22 106786222Swollman -3:00 - BRT 2001 Sep 13 1068105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 1069105196Swollman -3:00 - BRT 107043543Swollman# 1071121098Swollman# Bahia (BA) 1072121098Swollman# There are too many Salvadors elsewhere, so use America/Bahia instead 1073121098Swollman# of America/Salvador. 1074121098SwollmanZone America/Bahia -2:34:04 - LMT 1914 1075121098Swollman -3:00 Brazil BR%sT 2003 Sep 24 1076226784Sedwin -3:00 - BRT 2011 Oct 16 1077242212Sedwin -3:00 Brazil BR%sT 2012 Oct 21 1078242212Sedwin -3:00 - BRT 1079121098Swollman# 1080121098Swollman# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 108158787Sru# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 108258787Sru# Santa Catarina (SC), Rio Grande do Sul (RS) 10832742SwollmanZone America/Sao_Paulo -3:06:28 - LMT 1914 108458787Sru -3:00 Brazil BR%sT 1963 Oct 23 00:00 108558787Sru -3:00 1:00 BRST 1964 108658787Sru -3:00 Brazil BR%sT 108720094Swollman# 1088121098Swollman# Mato Grosso do Sul (MS) 1089121098SwollmanZone America/Campo_Grande -3:38:28 - LMT 1914 109058787Sru -4:00 Brazil AM%sT 109120094Swollman# 1092121098Swollman# Mato Grosso (MT) 1093121098SwollmanZone America/Cuiaba -3:44:20 - LMT 1914 1094121098Swollman -4:00 Brazil AM%sT 2003 Sep 24 1095138323Swollman -4:00 - AMT 2004 Oct 1 1096136638Swollman -4:00 Brazil AM%sT 1097121098Swollman# 1098181421Sedwin# Rondonia (RO) 109943543SwollmanZone America/Porto_Velho -4:15:36 - LMT 1914 110058787Sru -4:00 Brazil AM%sT 1988 Sep 12 110158787Sru -4:00 - AMT 110243543Swollman# 110358787Sru# Roraima (RR) 110458787SruZone America/Boa_Vista -4:02:40 - LMT 1914 110558787Sru -4:00 Brazil AM%sT 1988 Sep 12 110658787Sru -4:00 - AMT 1999 Sep 30 110775267Swollman -4:00 Brazil AM%sT 2000 Oct 15 110875267Swollman -4:00 - AMT 110958787Sru# 111075267Swollman# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1111121098Swollman# The great circle line from Tabatinga to Porto Acre divides 1112121098Swollman# east from west Amazonas. 11132742SwollmanZone America/Manaus -4:00:04 - LMT 1914 111458787Sru -4:00 Brazil AM%sT 1988 Sep 12 111558787Sru -4:00 - AMT 1993 Sep 28 111658787Sru -4:00 Brazil AM%sT 1994 Sep 22 111758787Sru -4:00 - AMT 111820094Swollman# 111975267Swollman# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 112075267Swollman# Eirunepe, Envira, Ipixuna 112175267SwollmanZone America/Eirunepe -4:39:28 - LMT 1914 112275267Swollman -5:00 Brazil AC%sT 1988 Sep 12 112375267Swollman -5:00 - ACT 1993 Sep 28 112475267Swollman -5:00 Brazil AC%sT 1994 Sep 22 1125181421Sedwin -5:00 - ACT 2008 Jun 24 00:00 1126181421Sedwin -4:00 - AMT 112775267Swollman# 112858787Sru# Acre (AC) 112975267SwollmanZone America/Rio_Branco -4:31:12 - LMT 1914 113058787Sru -5:00 Brazil AC%sT 1988 Sep 12 1131181421Sedwin -5:00 - ACT 2008 Jun 24 00:00 1132181421Sedwin -4:00 - AMT 11332742Swollman 11342742Swollman# Chile 11352742Swollman 113614343Swollman# From Eduardo Krell (1995-10-19): 113714343Swollman# The law says to switch to DST at midnight [24:00] on the second SATURDAY 113814343Swollman# of October.... The law is the same for March and October. 113943014Swollman# (1998-09-29): 114043014Swollman# Because of the drought this year, the government decided to go into 114143014Swollman# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 114243014Swollman# (unless there's another dry season next year, I guess). 11432742Swollman 114458787Sru# From Julio I. Pacheco Troncoso (1999-03-18): 114558787Sru# Because of the same drought, the government decided to end DST later, 114658787Sru# on April 3, (one-time change). 114758787Sru 1148169811Swollman# From Oscar van Vlijmen (2006-10-08): 1149169811Swollman# http://www.horaoficial.cl/cambio.htm 115075267Swollman 1151169811Swollman# From Jesper Norgaard Welen (2006-10-08): 1152169811Swollman# I think that there are some obvious mistakes in the suggested link 1153169811Swollman# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1154169811Swollman# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1155169811Swollman# (they should have been 1990-09-15 and 1990-09-16 respectively), but 1156169811Swollman# anyhow it clears up some doubts too. 115775267Swollman 1158169811Swollman# From Paul Eggert (2006-12-27): 1159169811Swollman# The following data for Chile and America/Santiago are from 1160169811Swollman# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1161169811Swollman# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1162169811Swollman# & Pottenger, except with DST transitions after 1932 cloned from 1163169811Swollman# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1164169811Swollman# but we have no other source. 1165114173Swollman 1166176974Sedwin# From German Poo-Caaman~o (2008-03-03): 1167176974Sedwin# Due to drought, Chile extends Daylight Time in three weeks. This 1168176974Sedwin# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1169176974Sedwin# and Saturday 3/29 at 22:00 for Pacific/Easter) 1170240461Sedwin# The Supreme Decree is located at 1171176974Sedwin# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1172176974Sedwin# http://www.shoa.cl/servicios/supremo316.pdf 1173176974Sedwin# </a> 1174176974Sedwin# and the instructions for 2008 are located in: 1175176974Sedwin# <a href="http://www.horaoficial.cl/cambio.htm"> 1176176974Sedwin# http://www.horaoficial.cl/cambio.htm 1177176974Sedwin# </a>. 1178176974Sedwin 1179181421Sedwin# From Jose Miguel Garrido (2008-03-05): 1180176974Sedwin# ... 1181240461Sedwin# You could see the announces of the change on 1182176974Sedwin# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1183176974Sedwin# http://www.shoa.cl/noticias/2008/04hora/hora.htm 1184176974Sedwin# </a>. 1185176974Sedwin 1186204887Sedwin# From Angel Chiang (2010-03-04): 1187204887Sedwin# Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1188204887Sedwin# <a href="http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098"> 1189204887Sedwin# http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1190204887Sedwin# </a> 1191204887Sedwin# (in Spanish, last paragraph). 1192204887Sedwin# 1193204887Sedwin# This is breaking news. There should be more information available later. 1194204887Sedwin 1195204887Sedwin# From Arthur Daivd Olson (2010-03-06): 1196204887Sedwin# Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1197204887Sedwin 1198219411Sedwin# From Glenn Eychaner (2011-03-02): [geychaner@mac.com] 1199219411Sedwin# It appears that the Chilean government has decided to postpone the 1200219411Sedwin# change from summer time to winter time again, by three weeks to April 1201219411Sedwin# 2nd: 1202219411Sedwin# <a href="http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651"> 1203219411Sedwin# http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651 1204219411Sedwin# </a> 1205219411Sedwin# 1206219411Sedwin# This is not yet reflected in the offical "cambio de hora" site, but 1207219411Sedwin# probably will be soon: 1208219411Sedwin# <a href="http://www.horaoficial.cl/cambio.htm"> 1209219411Sedwin# http://www.horaoficial.cl/cambio.htm 1210219411Sedwin# </a> 1211219411Sedwin 1212219411Sedwin# From Arthur David Olson (2011-03-02): 1213219411Sedwin# The emol.com article mentions a water shortage as the cause of the 1214219411Sedwin# postponement, which may mean that it's not a permanent change. 1215220286Sedwin 1216220286Sedwin# From Glenn Eychaner (2011-03-28): 1217220286Sedwin# The article: 1218220286Sedwin# <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}"> 1219220286Sedwin# http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1220220286Sedwin# </a> 1221220286Sedwin# 1222220286Sedwin# In English: 1223220286Sedwin# Chile's clocks will go back an hour this year on the 7th of May instead 1224220286Sedwin# of this Saturday. They will go forward again the 3rd Saturday in 1225220286Sedwin# August, not in October as they have since 1968. This is a pilot plan 1226220286Sedwin# which will be reevaluated in 2012. 1227220286Sedwin 1228233447Sedwin# From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23): 1229233447Sedwin# As stated in the website of the Chilean Energy Ministry 1230233447Sedwin# http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html 1231233447Sedwin# The Chilean Government has decided to postpone the entrance into winter time 1232233447Sedwin# (to leave DST) from March 11 2012 to April 28th 2012. The decision has not 1233233447Sedwin# been yet formalized but it will within the next days. 1234233447Sedwin# Quote from the website communication: 1235233447Sedwin# 1236233447Sedwin# 6. For the year 2012, the dates of entry into winter time will be as follows: 1237233447Sedwin# a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at 1238233447Sedwin# 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00 1239233447Sedwin# of the same day. 1240233447Sedwin# b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is, 1241233447Sedwin# at 23:59:59, instead of passing to 0:00, the time should be adjusted to be 1242233447Sedwin# 01:00 on September 2. 1243233447Sedwin 1244248310Sedwin# From Steffen Thorsen (2013-02-15): 1245248310Sedwin# According to several news sources, Chile has extended DST this year, 1246248310Sedwin# they will end DST later and start DST earlier than planned. They 1247248310Sedwin# hope to save energy. The new end date is 2013-04-28 00:00 and new 1248248310Sedwin# start date is 2013-09-08 00:00.... 1249248310Sedwin# http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm 1250248310Sedwin 1251233447Sedwin# NOTE: ChileAQ rules for Antarctic bases are stored separately in the 1252233447Sedwin# 'antarctica' file. 1253233447Sedwin 12542742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1255169811SwollmanRule Chile 1927 1932 - Sep 1 0:00 1:00 S 125658787SruRule Chile 1928 1932 - Apr 1 0:00 0 - 1257169811SwollmanRule Chile 1942 only - Jun 1 4:00u 0 - 1258169811SwollmanRule Chile 1942 only - Aug 1 5:00u 1:00 S 1259169811SwollmanRule Chile 1946 only - Jul 15 4:00u 1:00 S 1260169811SwollmanRule Chile 1946 only - Sep 1 3:00u 0:00 - 1261169811SwollmanRule Chile 1947 only - Apr 1 4:00u 0 - 1262169811SwollmanRule Chile 1968 only - Nov 3 4:00u 1:00 S 1263169811SwollmanRule Chile 1969 only - Mar 30 3:00u 0 - 1264169811SwollmanRule Chile 1969 only - Nov 23 4:00u 1:00 S 1265169811SwollmanRule Chile 1970 only - Mar 29 3:00u 0 - 1266169811SwollmanRule Chile 1971 only - Mar 14 3:00u 0 - 1267169811SwollmanRule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1268169811SwollmanRule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1269169811SwollmanRule Chile 1973 only - Sep 30 4:00u 1:00 S 1270169811SwollmanRule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1271169811SwollmanRule Chile 1987 only - Apr 12 3:00u 0 - 1272169811SwollmanRule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1273169811SwollmanRule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1274169811SwollmanRule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1275169811SwollmanRule Chile 1990 only - Mar 18 3:00u 0 - 1276169811SwollmanRule Chile 1990 only - Sep 16 4:00u 1:00 S 1277169811SwollmanRule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1278169811SwollmanRule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1279169811SwollmanRule Chile 1997 only - Mar 30 3:00u 0 - 1280169811SwollmanRule Chile 1998 only - Mar Sun>=9 3:00u 0 - 128175267SwollmanRule Chile 1998 only - Sep 27 4:00u 1:00 S 128275267SwollmanRule Chile 1999 only - Apr 4 3:00u 0 - 1283220286SedwinRule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1284176974SedwinRule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1285176974Sedwin# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1286176974Sedwin# which is used below in specifying the transition. 1287176974SedwinRule Chile 2008 only - Mar 30 3:00u 0 - 1288204887SedwinRule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1289220286SedwinRule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1290220286SedwinRule Chile 2011 only - May Sun>=2 3:00u 0 - 1291233447SedwinRule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1292248310SedwinRule Chile 2012 max - Apr Sun>=23 3:00u 0 - 1293248310SedwinRule Chile 2012 max - Sep Sun>=2 4:00u 1:00 S 1294169811Swollman# IATA SSIM anomalies: (1992-02) says 1992-03-14; 129558787Sru# (1996-09) says 1998-03-08. Ignore these. 12962742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1297169811SwollmanZone America/Santiago -4:42:46 - LMT 1890 1298169811Swollman -4:42:46 - SMT 1910 # Santiago Mean Time 1299169811Swollman -5:00 - CLT 1916 Jul 1 # Chile Time 1300169811Swollman -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1301169811Swollman -4:00 - CLT 1919 Jul 1 # Chile Time 1302169811Swollman -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1303169811Swollman -5:00 Chile CL%sT 1947 May 22 # Chile Time 130419878Swollman -4:00 Chile CL%sT 1305169811SwollmanZone Pacific/Easter -7:17:44 - LMT 1890 1306169811Swollman -7:17:28 - EMT 1932 Sep # Easter Mean Time 1307158421Swollman -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 130819878Swollman -6:00 Chile EAS%sT 13092742Swollman# 131086222Swollman# Sala y Gomez Island is like Pacific/Easter. 131186222Swollman# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 131286222Swollman# San Felix, and Antarctic bases, are like America/Santiago. 13132742Swollman 13142742Swollman# Colombia 1315248310Sedwin 1316248310Sedwin# Milne gives 4:56:16.4 for Bogota time in 1899; round to nearest. He writes, 1317248310Sedwin# "A variation of fifteen minutes in the public clocks of Bogota is not rare." 1318248310Sedwin 131920094Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1320158421SwollmanRule CO 1992 only - May 3 0:00 1:00 S 1321158421SwollmanRule CO 1993 only - Apr 4 0:00 0 - 13222742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1323248310SedwinZone America/Bogota -4:56:16 - LMT 1884 Mar 13 1324248310Sedwin -4:56:16 - BMT 1914 Nov 23 # Bogota Mean Time 132520094Swollman -5:00 CO CO%sT # Colombia Time 13262742Swollman# Malpelo, Providencia, San Andres 13272742Swollman# no information; probably like America/Bogota 13282742Swollman 13292742Swollman# Curacao 1330248310Sedwin 1331248310Sedwin# Milne gives 4:35:46.9 for Curacao mean time; round to nearest. 1332158421Swollman# 1333169811Swollman# From Paul Eggert (2006-03-22): 1334158421Swollman# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1335158421Swollman# -4:00 since standard time was introduced on 1912-03-02; and that 1336158421Swollman# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1337158421Swollman# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1338158421Swollman# Saba Island has been like Curacao. 1339169811Swollman# This all predates our 1970 cutoff, though. 1340158421Swollman# 1341158421Swollman# By July 2007 Curacao and St Maarten are planned to become 1342158421Swollman# associated states within the Netherlands, much like Aruba; 1343158421Swollman# Bonaire, Saba and St Eustatius would become directly part of the 1344158421Swollman# Netherlands as Kingdom Islands. This won't affect their time zones 1345158421Swollman# though, as far as we know. 1346169811Swollman# 13472742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1348248310SedwinZone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad 134919878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 13502742Swollman -4:00 - AST 13512742Swollman 1352223629Sedwin# From Arthur David Olson (2011-06-15): 1353223629Sedwin# At least for now, use links for places with new iso3166 codes. 1354223629Sedwin# The name "Lower Prince's Quarter" is both longer than fourteen charaters 1355223629Sedwin# and contains an apostrophe; use "Lower_Princes" below. 1356223629Sedwin 1357223629SedwinLink America/Curacao America/Lower_Princes # Sint Maarten 1358223629SedwinLink America/Curacao America/Kralendijk # Bonaire, Sint Estatius and Saba 1359223629Sedwin 13602742Swollman# Ecuador 1361169811Swollman# 1362248310Sedwin# Milne says the Sentral and South American Telegraph Company used -5:24:15. 1363248310Sedwin# 1364169811Swollman# From Paul Eggert (2007-03-04): 1365169811Swollman# Apparently Ecuador had a failed experiment with DST in 1992. 1366169811Swollman# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1367169811Swollman# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1368169811Swollman# talk about "hora Sixto". Leave this alone for now, as we have no data. 1369169811Swollman# 13702742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 13712742SwollmanZone America/Guayaquil -5:19:20 - LMT 1890 137219878Swollman -5:14:00 - QMT 1931 # Quito Mean Time 137319878Swollman -5:00 - ECT # Ecuador Time 13742742SwollmanZone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 137519878Swollman -5:00 - ECT 1986 137619878Swollman -6:00 - GALT # Galapagos Time 13772742Swollman 13782742Swollman# Falklands 137975267Swollman 1380158421Swollman# From Paul Eggert (2006-03-22): 1381158421Swollman# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1382158421Swollman# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 138375267Swollman 138475267Swollman# From Falkland Islands Government Office, London (2001-01-22) 138575267Swollman# via Jesper Norgaard: 138675267Swollman# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 138775267Swollman# April 2001 and advance one hour to summer time at 2 am on Sunday 2 138875267Swollman# September. It is anticipated that the clocks will revert back at 2 138975267Swollman# am on Sunday 21 April 2002 and advance to summer time at 2 am on 139075267Swollman# Sunday 1 September. 139175267Swollman 139275267Swollman# From Rives McDow (2001-02-13): 139375267Swollman# 139475267Swollman# I have communicated several times with people there, and the last 139575267Swollman# time I had communications that was helpful was in 1998. Here is 139675267Swollman# what was said then: 139775267Swollman# 139875267Swollman# "The general rule was that Stanley used daylight saving and the Camp 139975267Swollman# did not. However for various reasons many people in the Camp have 140075267Swollman# started to use daylight saving (known locally as 'Stanley Time') 140175267Swollman# There is no rule as to who uses daylight saving - it is a matter of 140275267Swollman# personal choice and so it is impossible to draw a map showing who 140375267Swollman# uses it and who does not. Any list would be out of date as soon as 140475267Swollman# it was produced. This year daylight saving ended on April 18/19th 140575267Swollman# and started again on September 12/13th. I do not know what the rule 140675267Swollman# is, but can find out if you like. We do not change at the same time 140775267Swollman# as UK or Chile." 140875267Swollman# 140975267Swollman# I did have in my notes that the rule was "Second Saturday in Sep at 141075267Swollman# 0:00 until third Saturday in Apr at 0:00". I think that this does 141175267Swollman# not agree in some cases with Shanks; is this true? 141275267Swollman# 141375267Swollman# Also, there is no mention in the list that some areas in the 141475267Swollman# Falklands do not use DST. I have found in my communications there 141575267Swollman# that these areas are on the western half of East Falkland and all of 141675267Swollman# West Falkland. Stanley is the only place that consistently observes 141775267Swollman# DST. Again, as in other places in the world, the farmers don't like 141875267Swollman# it. West Falkland is almost entirely sheep farmers. 141975267Swollman# 142075267Swollman# I know one lady there that keeps a list of which farm keeps DST and 142175267Swollman# which doesn't each year. She runs a shop in Stanley, and says that 142275267Swollman# the list changes each year. She uses it to communicate to her 142375267Swollman# customers, catching them when they are home for lunch or dinner. 142475267Swollman 142575267Swollman# From Paul Eggert (2001-03-05): 142675267Swollman# For now, we'll just record the time in Stanley, since we have no 142775267Swollman# better info. 142875267Swollman 1429220549Sedwin# From Steffen Thorsen (2011-04-01): 1430220549Sedwin# The Falkland Islands will not turn back clocks this winter, but stay on 1431220549Sedwin# daylight saving time. 1432220549Sedwin# 1433220549Sedwin# One source: 1434220549Sedwin# <a href="http://www.falklandnews.com/public/story.cfm?get=5914&source=3"> 1435220549Sedwin# http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1436220549Sedwin# </a> 1437220549Sedwin# 1438220549Sedwin# We have gotten this confirmed by a clerk of the legislative assembly: 1439220549Sedwin# Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1440220549Sedwin# third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1441220549Sedwin# hours) on the first Sunday of September at 0200hrs. 1442220549Sedwin# 1443220549Sedwin# IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1444220549Sedwin# will not revert to local mean time, but clocks will remain on Summer 1445220549Sedwin# time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1446220549Sedwin# change to local time following the trial period will be notified. 1447233447Sedwin# 1448233447Sedwin# From Andrew Newman (2012-02-24) 1449233447Sedwin# A letter from Justin McPhee, Chief Executive, 1450233447Sedwin# Cable & Wireless Falkland Islands (dated 2012-02-22) 1451233447Sedwin# states... 1452233447Sedwin# The current Atlantic/Stanley entry under South America expects the 1453233447Sedwin# clocks to go back to standard Falklands Time (FKT) on the 15th April. 1454233447Sedwin# The database entry states that in 2011 Stanley was staying on fixed 1455233447Sedwin# summer time on a trial basis only. FIG need to contact IANA and/or 1456233447Sedwin# the maintainers of the database to inform them we're adopting 1457233447Sedwin# the same policy this year and suggest recommendations for future years. 1458233447Sedwin# 1459233447Sedwin# For now we will assume permanent summer time for the Falklands 1460233447Sedwin# until advised differently (to apply for 2012 and beyond, after the 2011 1461233447Sedwin# experiment was apparently successful.) 14622742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 146319878SwollmanRule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 146419878SwollmanRule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 146519878SwollmanRule Falk 1939 only - Oct 1 0:00 1:00 S 146619878SwollmanRule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 146719878SwollmanRule Falk 1943 only - Jan 1 0:00 0 - 146819878SwollmanRule Falk 1983 only - Sep lastSun 0:00 1:00 S 146919878SwollmanRule Falk 1984 1985 - Apr lastSun 0:00 0 - 147019878SwollmanRule Falk 1984 only - Sep 16 0:00 1:00 S 147175267SwollmanRule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 147275267SwollmanRule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1473220549SedwinRule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1474233447SedwinRule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S 14752742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 14762742SwollmanZone Atlantic/Stanley -3:51:24 - LMT 1890 147719878Swollman -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 147819878Swollman -4:00 Falk FK%sT 1983 May # Falkland Is Time 147919878Swollman -3:00 Falk FK%sT 1985 Sep 15 1480233447Sedwin -4:00 Falk FK%sT 2010 Sep 5 02:00 1481233447Sedwin -3:00 - FKST 14822742Swollman 14832742Swollman# French Guiana 14842742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 14852742SwollmanZone America/Cayenne -3:29:20 - LMT 1911 Jul 148619878Swollman -4:00 - GFT 1967 Oct # French Guiana Time 148719878Swollman -3:00 - GFT 14882742Swollman 14892742Swollman# Guyana 14902742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 14912742SwollmanZone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 149219878Swollman -3:45 - GBGT 1966 May 26 # Br Guiana Time 149319878Swollman -3:45 - GYT 1975 Jul 31 # Guyana Time 149420094Swollman -3:00 - GYT 1991 149520094Swollman# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 149620094Swollman -4:00 - GYT 14972742Swollman 14982742Swollman# Paraguay 1499158421Swollman# From Paul Eggert (2006-03-22): 1500158421Swollman# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1501158421Swollman# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 150258787Sru# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 15032742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 150458787SruRule Para 1975 1988 - Oct 1 0:00 1:00 S 150519878SwollmanRule Para 1975 1978 - Mar 1 0:00 0 - 150658787SruRule Para 1979 1991 - Apr 1 0:00 0 - 150719878SwollmanRule Para 1989 only - Oct 22 0:00 1:00 S 150820094SwollmanRule Para 1990 only - Oct 1 0:00 1:00 S 150920094SwollmanRule Para 1991 only - Oct 6 0:00 1:00 S 151020094SwollmanRule Para 1992 only - Mar 1 0:00 0 - 151120094SwollmanRule Para 1992 only - Oct 5 0:00 1:00 S 151220094SwollmanRule Para 1993 only - Mar 31 0:00 0 - 151330711SwollmanRule Para 1993 1995 - Oct 1 0:00 1:00 S 151420094SwollmanRule Para 1994 1995 - Feb lastSun 0:00 0 - 151558787SruRule Para 1996 only - Mar 1 0:00 0 - 151675267Swollman# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 151767578Swollman# From Steffen Thorsen (2000-10-02): 151867578Swollman# I have three independent reports that Paraguay changed to DST this Sunday 151967578Swollman# (10-01). 152075267Swollman# 152175267Swollman# Translated by Gwillim Law (2001-02-27) from 152275267Swollman# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 152375267Swollman# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 152475267Swollman# </a>: 152575267Swollman# Starting at 0:00 today, the clock will be set forward 60 minutes, in 152675267Swollman# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 152775267Swollman# system has been operating for several years. Formerly there was a separate 152875267Swollman# decree each year; the new law has the same effect, but permanently. Every 152975267Swollman# year, the time will change on the first Sunday of October; likewise, the 153075267Swollman# clock will be set back on the first Sunday of March. 153175267Swollman# 153293799SwollmanRule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1533158421Swollman# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 153475267SwollmanRule Para 1997 only - Feb lastSun 0:00 0 - 1535158421Swollman# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 153675267Swollman# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 153793799SwollmanRule Para 1998 2001 - Mar Sun>=1 0:00 0 - 153893799Swollman# From Rives McDow (2002-02-28): 153993799Swollman# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 154093799Swollman# dst method to be from the first Sunday in September to the first Sunday in 154193799Swollman# April. 1542149514SwollmanRule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1543149514SwollmanRule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1544149514Swollman# 1545149514Swollman# From Jesper Norgaard Welen (2005-01-02): 1546149514Swollman# There are several sources that claim that Paraguay made 1547149514Swollman# a timezone rule change in autumn 2004. 1548149514Swollman# From Steffen Thorsen (2005-01-05): 1549169811Swollman# Decree 1,867 (2004-03-05) 1550169811Swollman# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1551169811Swollman# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1552204566SedwinRule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1553204566SedwinRule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1554204566Sedwin# From Carlos Raul Perasso (2010-02-18): 1555204566Sedwin# By decree number 3958 issued yesterday ( 1556204566Sedwin# <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> 1557204566Sedwin# http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1558204566Sedwin# </a> 1559204566Sedwin# ) 1560204566Sedwin# Paraguay changes its DST schedule, postponing the March rule to April and 1561204566Sedwin# modifying the October date. The decree reads: 1562204566Sedwin# ... 1563204566Sedwin# Art. 1. It is hereby established that from the second Sunday of the month of 1564204566Sedwin# April of this year (2010), the official time is to be set back 60 minutes, 1565204566Sedwin# and that on the first Sunday of the month of October, it is to be set 1566204566Sedwin# forward 60 minutes, in all the territory of the Paraguayan Republic. 1567204566Sedwin# ... 1568204887SedwinRule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1569204566SedwinRule Para 2010 max - Apr Sun>=8 0:00 0 - 1570248310Sedwin# 1571248310Sedwin# From Steffen Thorsen (2013-03-07): 1572248310Sedwin# Paraguay will end DST on 2013-03-24 00:00.... 1573248310Sedwin# They do not tell if this will be a permanent change or just this year.... 1574248310Sedwin# http://www.ande.gov.py/interna.php?id=1075 1575248310Sedwin# 1576248310Sedwin# From Paul Eggert (2013-03-07): 1577248310Sedwin# For now, assume it's just this year. 1578248310SedwinRule Para 2013 only - Mar 24 0:00 0 - 157975267Swollman 15802742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 15812742SwollmanZone America/Asuncion -3:50:40 - LMT 1890 158219878Swollman -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 158319878Swollman -4:00 - PYT 1972 Oct # Paraguay Time 158419878Swollman -3:00 - PYT 1974 Apr 158519878Swollman -4:00 Para PY%sT 15862742Swollman 15872742Swollman# Peru 1588136638Swollman# 1589136638Swollman# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1590136638Swollman# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1591149514Swollman# When we were in Peru in 1985-1986, they apparently switched over 1592136638Swollman# sometime between December 29 and January 3 while we were on the Amazon. 1593136638Swollman# 1594158421Swollman# From Paul Eggert (2006-03-22): 1595158421Swollman# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1596136638Swollman 15972742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 159819878SwollmanRule Peru 1938 only - Jan 1 0:00 1:00 S 159919878SwollmanRule Peru 1938 only - Apr 1 0:00 0 - 160019878SwollmanRule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 160119878SwollmanRule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1602136638SwollmanRule Peru 1986 1987 - Jan 1 0:00 1:00 S 1603136638SwollmanRule Peru 1986 1987 - Apr 1 0:00 0 - 160419878SwollmanRule Peru 1990 only - Jan 1 0:00 1:00 S 160519878SwollmanRule Peru 1990 only - Apr 1 0:00 0 - 1606158421Swollman# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 160758787SruRule Peru 1994 only - Jan 1 0:00 1:00 S 160858787SruRule Peru 1994 only - Apr 1 0:00 0 - 16092742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 16102742SwollmanZone America/Lima -5:08:12 - LMT 1890 161186222Swollman -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 161219878Swollman -5:00 Peru PE%sT # Peru Time 16132742Swollman 16142742Swollman# South Georgia 16152742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 16162742SwollmanZone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 161719878Swollman -2:00 - GST # South Georgia Time 16182742Swollman 16192742Swollman# South Sandwich Is 162058787Sru# uninhabited; scientific personnel have wintered 16212742Swollman 16222742Swollman# Suriname 16232742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 16242742SwollmanZone America/Paramaribo -3:40:40 - LMT 1911 16252742Swollman -3:40:52 - PMT 1935 # Paramaribo Mean Time 16262742Swollman -3:40:36 - PMT 1945 Oct # The capital moved? 162719878Swollman -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 162819878Swollman -3:30 - SRT 1984 Oct # Suriname Time 162919878Swollman -3:00 - SRT 16302742Swollman 16312742Swollman# Trinidad and Tobago 16322742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 16332742SwollmanZone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 16342742Swollman -4:00 - AST 16352742Swollman 16362742Swollman# Uruguay 1637149514Swollman# From Paul Eggert (1993-11-18): 16382742Swollman# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1639158421Swollman# From Shanks & Pottenger: 16402742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1641158421Swollman# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 164219878SwollmanRule Uruguay 1923 only - Oct 2 0:00 0:30 HS 164319878SwollmanRule Uruguay 1924 1926 - Apr 1 0:00 0 - 164419878SwollmanRule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 164519878SwollmanRule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1646158421Swollman# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 164719878SwollmanRule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 164819878SwollmanRule Uruguay 1936 only - Nov 1 0:00 0:30 HS 164919878SwollmanRule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1650158421Swollman# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 165119878SwollmanRule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 16522742Swollman# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1653158421Swollman# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1654158421SwollmanRule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1655158421SwollmanRule Uruguay 1942 only - Jan 1 0:00 0 - 165619878SwollmanRule Uruguay 1942 only - Dec 14 0:00 1:00 S 165719878SwollmanRule Uruguay 1943 only - Mar 14 0:00 0 - 165819878SwollmanRule Uruguay 1959 only - May 24 0:00 1:00 S 165919878SwollmanRule Uruguay 1959 only - Nov 15 0:00 0 - 166019878SwollmanRule Uruguay 1960 only - Jan 17 0:00 1:00 S 166119878SwollmanRule Uruguay 1960 only - Mar 6 0:00 0 - 166219878SwollmanRule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 166319878SwollmanRule Uruguay 1965 only - Sep 26 0:00 0 - 166419878SwollmanRule Uruguay 1966 1967 - Oct 31 0:00 0 - 166519878SwollmanRule Uruguay 1968 1970 - May 27 0:00 0:30 HS 166619878SwollmanRule Uruguay 1968 1970 - Dec 2 0:00 0 - 166719878SwollmanRule Uruguay 1972 only - Apr 24 0:00 1:00 S 166819878SwollmanRule Uruguay 1972 only - Aug 15 0:00 0 - 166919878SwollmanRule Uruguay 1974 only - Mar 10 0:00 0:30 HS 167019878SwollmanRule Uruguay 1974 only - Dec 22 0:00 1:00 S 167119878SwollmanRule Uruguay 1976 only - Oct 1 0:00 0 - 167219878SwollmanRule Uruguay 1977 only - Dec 4 0:00 1:00 S 167319878SwollmanRule Uruguay 1978 only - Apr 1 0:00 0 - 167419878SwollmanRule Uruguay 1979 only - Oct 1 0:00 1:00 S 167519878SwollmanRule Uruguay 1980 only - May 1 0:00 0 - 167619878SwollmanRule Uruguay 1987 only - Dec 14 0:00 1:00 S 167719878SwollmanRule Uruguay 1988 only - Mar 14 0:00 0 - 167819878SwollmanRule Uruguay 1988 only - Dec 11 0:00 1:00 S 167919878SwollmanRule Uruguay 1989 only - Mar 12 0:00 0 - 168019878SwollmanRule Uruguay 1989 only - Oct 29 0:00 1:00 S 1681158421Swollman# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 168258787Sru# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 168320094SwollmanRule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 168420094SwollmanRule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 168530711SwollmanRule Uruguay 1992 only - Oct 18 0:00 1:00 S 168620094SwollmanRule Uruguay 1993 only - Feb 28 0:00 0 - 1687136638Swollman# From Eduardo Cota (2004-09-20): 1688136638Swollman# The uruguayan government has decreed a change in the local time.... 1689136638Swollman# http://www.presidencia.gub.uy/decretos/2004091502.htm 1690149514SwollmanRule Uruguay 2004 only - Sep 19 0:00 1:00 S 1691149514Swollman# From Steffen Thorsen (2005-03-11): 1692149514Swollman# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1693149514Swollman# save energy ... it was postponed two weeks.... 1694149514Swollman# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1695149514SwollmanRule Uruguay 2005 only - Mar 27 2:00 0 - 1696153670Swollman# From Eduardo Cota (2005-09-27): 1697153670Swollman# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1698153670Swollman# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1699153670Swollman# 02:00 local time, official time in Uruguay will be at GMT -2. 1700153670SwollmanRule Uruguay 2005 only - Oct 9 2:00 1:00 S 1701153670SwollmanRule Uruguay 2006 only - Mar 12 2:00 0 - 1702163302Sru# From Jesper Norgaard Welen (2006-09-06): 1703163302Sru# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1704163302SruRule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1705163302SruRule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 17062742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 17072742SwollmanZone America/Montevideo -3:44:44 - LMT 1898 Jun 28 170819878Swollman -3:44:44 - MMT 1920 May 1 # Montevideo MT 170919878Swollman -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 171019878Swollman -3:00 Uruguay UY%sT 17112742Swollman 17122742Swollman# Venezuela 1713172479Sedwin# 1714174242Sedwin# From John Stainforth (2007-11-28): 1715174242Sedwin# ... the change for Venezuela originally expected for 2007-12-31 has 1716174242Sedwin# been brought forward to 2007-12-09. The official announcement was 1717174242Sedwin# published today in the "Gaceta Oficial de la Republica Bolivariana 1718174242Sedwin# de Venezuela, numero 38.819" (official document for all laws or 1719174242Sedwin# resolution publication) 1720174242Sedwin# http://www.globovision.com/news.php?nid=72208 1721172479Sedwin 17222742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 17232742SwollmanZone America/Caracas -4:27:44 - LMT 1890 172486222Swollman -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 172519878Swollman -4:30 - VET 1965 # Venezuela Time 1726174242Sedwin -4:00 - VET 2007 Dec 9 03:00 1727172479Sedwin -4:30 - VET 1728