southamerica revision 183864
1183864Sedwin# @(#)southamerica 8.30 2153761Swollman# <pre> 364499Swollman 42742Swollman# This data is by no means authoritative; if you think you know better, 52742Swollman# go ahead and edit the file (and please send any changes to 62742Swollman# tz@elsie.nci.nih.gov for general use in the future). 72742Swollman 8158421Swollman# From Paul Eggert (2006-03-22): 92742Swollman# A good source for time zone historical data outside the U.S. is 10158421Swollman# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 11158421Swollman# San Diego: ACS Publications, Inc. (2003). 122742Swollman# 1386222Swollman# Gwillim Law writes that a good source 1420094Swollman# for recent time zone data is the International Air Transport 1520094Swollman# Association's Standard Schedules Information Manual (IATA SSIM), 1620094Swollman# published semiannually. Law sent in several helpful summaries 1720094Swollman# of the IATA's data after 1990. 1820094Swollman# 19158421Swollman# Except where otherwise noted, Shanks & Pottenger is the source for 20158421Swollman# entries through 1990, and IATA SSIM is the source for entries afterwards. 2120094Swollman# 2219878Swollman# Earlier editions of these tables used the North American style (e.g. ARST and 2319878Swollman# ARDT for Argentine Standard and Daylight Time), but the following quote 2419878Swollman# suggests that it's better to use European style (e.g. ART and ARST). 2519878Swollman# I suggest the use of _Summer time_ instead of the more cumbersome 2619878Swollman# _daylight-saving time_. _Summer time_ seems to be in general use 2719878Swollman# in Europe and South America. 2819878Swollman# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 2919878Swollman# H L Mencken, _The American Language: Supplement I_ (1960), p 466 3058787Sru# 3158787Sru# Earlier editions of these tables also used the North American style 3258787Sru# for time zones in Brazil, but this was incorrect, as Brazilians say 3358787Sru# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 3458787Sru# the railroad sector, writes (1999-07-06): 3558787Sru# The subject of time zones is currently a matter of discussion/debate in 3658787Sru# Brazil. Let's say that "the Brasilia time" is considered the 3758787Sru# "official time" because Brasilia is the capital city. 3858787Sru# The other three time zones are called "Brasilia time "minus one" or 3958787Sru# "plus one" or "plus two". As far as I know there is no such 4058787Sru# name/designation as "Eastern Time" or "Central Time". 4158787Sru# So I invented the following (English-language) abbreviations for now. 4258787Sru# Corrections are welcome! 4358787Sru# std dst 4458787Sru# -2:00 FNT FNST Fernando de Noronha 4558787Sru# -3:00 BRT BRST Brasilia 4658787Sru# -4:00 AMT AMST Amazon 4758787Sru# -5:00 ACT ACST Acre 482742Swollman 492742Swollman############################################################################### 502742Swollman 512742Swollman############################################################################### 522742Swollman 532742Swollman# Argentina 542742Swollman 5519878Swollman# From Bob Devine (1988-01-28): 562742Swollman# Argentina: first Sunday in October to first Sunday in April since 1976. 572742Swollman# Double Summer time from 1969 to 1974. Switches at midnight. 582742Swollman 5919878Swollman# From U. S. Naval Observatory (1988-01-199): 602742Swollman# ARGENTINA 3 H BEHIND UTC 612742Swollman 62149514Swollman# From Hernan G. Otero (1995-06-26): 6321217Swollman# I am sending modifications to the Argentine time zone table... 649908Swollman# AR was chosen because they are the ISO letters that represent Argentina. 659908Swollman 662742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 6719878SwollmanRule Arg 1930 only - Dec 1 0:00 1:00 S 6819878SwollmanRule Arg 1931 only - Apr 1 0:00 0 - 6919878SwollmanRule Arg 1931 only - Oct 15 0:00 1:00 S 7019878SwollmanRule Arg 1932 1940 - Mar 1 0:00 0 - 7119878SwollmanRule Arg 1932 1939 - Nov 1 0:00 1:00 S 7219878SwollmanRule Arg 1940 only - Jul 1 0:00 1:00 S 7319878SwollmanRule Arg 1941 only - Jun 15 0:00 0 - 7419878SwollmanRule Arg 1941 only - Oct 15 0:00 1:00 S 7519878SwollmanRule Arg 1943 only - Aug 1 0:00 0 - 7619878SwollmanRule Arg 1943 only - Oct 15 0:00 1:00 S 7719878SwollmanRule Arg 1946 only - Mar 1 0:00 0 - 7819878SwollmanRule Arg 1946 only - Oct 1 0:00 1:00 S 7919878SwollmanRule Arg 1963 only - Oct 1 0:00 0 - 8019878SwollmanRule Arg 1963 only - Dec 15 0:00 1:00 S 8119878SwollmanRule Arg 1964 1966 - Mar 1 0:00 0 - 8219878SwollmanRule Arg 1964 1966 - Oct 15 0:00 1:00 S 8393799SwollmanRule Arg 1967 only - Apr 2 0:00 0 - 8458787SruRule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 8558787SruRule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 8619878SwollmanRule Arg 1974 only - Jan 23 0:00 1:00 S 8719878SwollmanRule Arg 1974 only - May 1 0:00 0 - 8819878SwollmanRule Arg 1988 only - Dec 1 0:00 1:00 S 899908Swollman# 90149514Swollman# From Hernan G. Otero (1995-06-26): 919908Swollman# These corrections were contributed by InterSoft Argentina S.A., 929908Swollman# obtaining the data from the: 939908Swollman# Talleres de Hidrografia Naval Argentina 9421217Swollman# (Argentine Naval Hydrography Institute) 9519878SwollmanRule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 9619878SwollmanRule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 979908Swollman# 98149514Swollman# From Hernan G. Otero (1995-06-26): 999908Swollman# From this moment on, the law that mandated the daylight saving 1009908Swollman# time corrections was derogated and no more modifications 1019908Swollman# to the time zones (for daylight saving) are now made. 1029908Swollman# 10358787Sru# From Rives McDow (2000-01-10): 10458787Sru# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 10558787Sru# which did not result in the switch of a time zone, as they stayed 9 hours 10664499Swollman# from the International Date Line. 10764499SwollmanRule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 108175034Sedwin# From Paul Eggert (2007-12-28): 109175034Sedwin# DST was set to expire on March 5, not March 3, but since it was converted 110175034Sedwin# to standard time on March 3 it's more convenient for us to pretend that 111175034Sedwin# it ended on March 3. 112175034SedwinRule Arg 2000 only - Mar 3 0:00 0 - 11358787Sru# 11458787Sru# From Peter Gradelski via Steffen Thorsen (2000-03-01): 11567578Swollman# We just checked with our Sao Paulo office and they say the government of 11658787Sru# Argentina decided not to become one of the countries that go on or off DST. 11758787Sru# So Buenos Aires should be -3 hours from GMT at all times. 11858787Sru# 119149514Swollman# From Fabian L. Arce Jofre (2000-04-04): 12064499Swollman# The law that claimed DST for Argentina was derogated by President Fernando 12164499Swollman# de la Rua on March 2, 2000, because it would make people spend more energy 12264499Swollman# in the winter time, rather than less. The change took effect on March 3. 12364499Swollman# 12486222Swollman# From Mariano Absatz (2001-06-06): 12586222Swollman# one of the major newspapers here in Argentina said that the 1999 12686222Swollman# Timezone Law (which never was effectively applied) will (would?) be 12786222Swollman# in effect.... The article is at 12886222Swollman# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 12986222Swollman# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 13086222Swollman# 1999-09-17, and published 1999-09-21. The official publication is at: 13186222Swollman# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 13286222Swollman# Regretfully, you have to subscribe (and pay) for the on-line version.... 13386222Swollman# 13486222Swollman# (2001-06-12): 13586222Swollman# the timezone for Argentina will not change next Sunday. 13686222Swollman# Apparently it will do so on Sunday 24th.... 13786222Swollman# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 13886222Swollman# 13986222Swollman# (2001-06-25): 14086222Swollman# Last Friday (yes, the last working day before the date of the change), the 14186222Swollman# Senate annulled the 1999 law that introduced the changes later postponed. 14286222Swollman# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 14386222Swollman# It remains the vote of the Deputies..., but it will be the same.... 14486222Swollman# This kind of things had always been done this way in Argentina. 14586222Swollman# We are still -03:00 all year round in all of the country. 14686222Swollman# 147175034Sedwin# From Steffen Thorsen (2007-12-21): 148175034Sedwin# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 149175034Sedwin# all of the country (all Zone-entries) are affected. News reports like 150175034Sedwin# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 151175034Sedwin# that Argentina will use DST next year as well, from October to 152175034Sedwin# March, although exact rules are not given. 153175034Sedwin# 154175034Sedwin# From Jesper Norgaard Welen (2007-12-26) 155175034Sedwin# The last hurdle of Argentina DST is over, the proposal was approved in 156175034Sedwin# the lower chamber too (Deputados) with a vote 192 for and 2 against. 157175034Sedwin# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 158175034Sedwin# the original scanned proposal, where the dates and the zero hours are 159175034Sedwin# clear and unambiguous...This is the article about final approval: 160175034Sedwin# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 161175034Sedwin# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 162175034Sedwin# </a> 163175034Sedwin# 164175034Sedwin# From Paul Eggert (2007-12-22): 165175034Sedwin# For dates after mid-2008, the following rules are my guesses and 166175034Sedwin# are quite possibly wrong, but are more likely than no DST at all. 167183066Sedwin 168183066Sedwin# From Alexander Krivenyshev (2008-09-05): 169183066Sedwin# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 170183066Sedwin# Argentina will start DST on Sunday October 19, 2008. 171183066Sedwin# 172183066Sedwin# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 173183066Sedwin# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 174183066Sedwin# </a> 175183066Sedwin# OR 176183066Sedwin# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 177183066Sedwin# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 178183066Sedwin# </a> 179183066Sedwin 180183864Sedwin# From Rodrigo Severo (2008-10-06): 181183864Sedwin# Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 182183864Sedwin# ... 183183864Sedwin# ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 184183864Sedwin# Hi, there is a problem with timezone-data-2008e and maybe with 185183864Sedwin# timezone-data-2008f 186183864Sedwin# Argentinian law [Number] 25.155 is no longer valid. 187183864Sedwin# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 188183864Sedwin# http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 189183864Sedwin# </a> 190183864Sedwin# The new one is law [Number] 26.350 191183864Sedwin# <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 192183864Sedwin# http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 193183864Sedwin# </a> 194183864Sedwin# So there is no summer time in Argentina for now. 195183864Sedwin 196175034SedwinRule Arg 2007 only - Dec 30 0:00 1:00 S 197175034SedwinRule Arg 2008 max - Mar Sun>=15 0:00 0 - 198183066SedwinRule Arg 2008 max - Oct Sun>=15 0:00 1:00 S 199175034Sedwin 200136638Swollman# From Mariano Absatz (2004-05-21): 201136638Swollman# Today it was officially published that the Province of Mendoza is changing 202136638Swollman# its timezone this winter... starting tomorrow night.... 203136638Swollman# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 204136638Swollman# From Paul Eggert (2004-05-24): 205136638Swollman# It's Law No. 7,210. This change is due to a public power emergency, so for 206136638Swollman# now we'll assume it's for this year only. 20793799Swollman# 208158421Swollman# From Paul Eggert (2006-03-22): 20993799Swollman# <a href="http://www.spicasc.net/horvera.html"> 210158421Swollman# Hora de verano para la Republica Argentina (2003-06-08) 21193799Swollman# </a> says that standard time in Argentina from 1894-10-31 21293799Swollman# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 213158421Swollman# over Shanks & Pottenger. 214136638Swollman# 215136638Swollman# From Mariano Absatz (2004-06-05): 216136638Swollman# These media articles from a major newspaper mostly cover the current state: 217136638Swollman# http://www.lanacion.com.ar/04/05/27/de_604825.asp 218136638Swollman# http://www.lanacion.com.ar/04/05/28/de_605203.asp 219136638Swollman# 220136638Swollman# The following eight (8) provinces pulled clocks back to UTC-04:00 at 221136638Swollman# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 222136638Swollman# Apparently, all nine provinces would go back to UTC-03:00 at the same 223136638Swollman# time in October 17th. 224136638Swollman# 225136638Swollman# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 226136638Swollman# Tierra del Fuego, Tucuman. 227136638Swollman# 228136638Swollman# From Mariano Absatz (2004-06-14): 229136638Swollman# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 230136638Swollman# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 231136638Swollman# annoyance with the change is much higher than the power savings obtained.... 232136638Swollman# 233136638Swollman# From Gwillim Law (2004-06-14): 234136638Swollman# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 235136638Swollman# "The time change in Tierra del Fuego was a conflicted decision from 236136638Swollman# the start. The government had decreed that the measure would take 237136638Swollman# effect on June 1, but a normative error forced the new time to begin 238136638Swollman# three days earlier, from a Saturday to a Sunday.... 239136638Swollman# Our understanding was that the change was originally scheduled to take place 240136638Swollman# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 241136638Swollman# provinces). Sunday was May 30, only two days earlier. So the article 242136638Swollman# contains a contradiction. I would give more credence to the Saturday/Sunday 243136638Swollman# date than the "three days earlier" phrase, and conclude that Tierra del 244136638Swollman# Fuego set its clocks back at 2004-05-30 00:00. 245136638Swollman# 246136638Swollman# From Steffen Thorsen (2004-10-05): 247136638Swollman# The previous law 7210 which changed the province of Mendoza's time zone 248136638Swollman# back in May have been modified slightly in a new law 7277, which set the 249136638Swollman# new end date to 2004-09-26 (original date was 2004-10-17). 250136638Swollman# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 251136638Swollman# 252136638Swollman# From Mariano Absatz (2004-10-05): 253136638Swollman# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 254136638Swollman# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 255136638Swollman# at midnight between Saturday, July 24th and Sunday, July 25th.... 256136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 257136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 258136638Swollman# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 25993799Swollman 260177591Sedwin# From Alex Krivenyshev (2008-01-17): 261177591Sedwin# Here are articles that Argentina Province San Luis is planning to end DST 262177591Sedwin# as earlier as upcoming Monday January 21, 2008 or February 2008: 263177591Sedwin# 264177591Sedwin# Provincia argentina retrasa reloj y marca diferencia con resto del pais 265177591Sedwin# (Argentine Province delayed clock and mark difference with the rest of the 266177591Sedwin# country) 267177591Sedwin# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 268177591Sedwin# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 269177591Sedwin# </a> 270177591Sedwin# 271177591Sedwin# Es inminente que en San Luis atrasen una hora los relojes 272177591Sedwin# (It is imminent in San Luis clocks one hour delay) 273177591Sedwin# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 274177591Sedwin# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 275177591Sedwin# </a> 276177591Sedwin# 277177591Sedwin# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 278177591Sedwin# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 279177591Sedwin# </a> 280177591Sedwin 281177591Sedwin# From Jesper Norgaard Welen (2008-01-18): 282177591Sedwin# The page of the San Luis provincial government 283177591Sedwin# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 284177591Sedwin# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 285177591Sedwin# </a> 286177591Sedwin# confirms what Alex Krivenyshev has earlier sent to the tz 287177591Sedwin# emailing list about that San Luis plans to return to standard 288177591Sedwin# time much earlier than the rest of the country. It also 289177591Sedwin# confirms that upon request the provinces San Juan and Mendoza 290177591Sedwin# refused to follow San Luis in this change. 291177591Sedwin# 292177591Sedwin# The change is supposed to take place Monday the 21.st at 0:00 293177591Sedwin# hours. As far as I understand it if this goes ahead, we need 294177591Sedwin# a new timezone for San Luis (although there are also documented 295177591Sedwin# independent changes in the southamerica file of San Luis in 296177591Sedwin# 1990 and 1991 which has not been confirmed). 297177591Sedwin 298177591Sedwin# From Jesper Norgaard Welen (2008-01-25): 299177591Sedwin# Unfortunately the below page has become defunct, about the San Luis 300177591Sedwin# time change. Perhaps because it now is part of a group of pages "Most 301177591Sedwin# important pages of 2008." 302177591Sedwin# 303177591Sedwin# You can use 304177591Sedwin# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 305177591Sedwin# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 306177591Sedwin# </a> 307177591Sedwin# instead it seems. Or use "Buscador" from the main page of the San Luis 308177591Sedwin# government, and fill in "huso" and click OK, and you will get 3 pages 309177591Sedwin# from which the first one is identical to the above. 310177591Sedwin 311177591Sedwin# From Mariano Absatz (2008-01-28): 312177591Sedwin# I can confirm that the Province of San Luis (and so far only that 313177591Sedwin# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 314177591Sedwin# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 315177591Sedwin# 1 hour), and they intend to keep UTC-3 as their timezone all year round 316177591Sedwin# (that is, unless they change their mind any minute now). 317177591Sedwin# 318177591Sedwin# So we'll have to add yet another city to 'southamerica' (I think San 319177591Sedwin# Luis city is the mos populated city in the Province, so it'd be 320177591Sedwin# America/Argentina/San_Luis... of course I can't remember if San Luis's 321177591Sedwin# history of particular changes goes along with Mendoza or San Juan :-( 322177591Sedwin# (I only remember not being able to collect hard facts about San Luis 323177591Sedwin# back in 2004, when these provinces changed to UTC-4 for a few days, I 324177591Sedwin# mailed them personally and never got an answer). 325177591Sedwin 326181421Sedwin# From Paul Eggert (2008-06-30): 327158421Swollman# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 328158421Swollman# from the IATA otherwise. As noted below, Shanks & Pottenger say that 329181421Sedwin# America/Cordoba split into 6 subregions during 1991/1992, one of which 330181421Sedwin# was America/San_Luis, but we haven't verified this yet so for now we'll 331181421Sedwin# keep America/Cordoba a single region rather than splitting it into the 332181421Sedwin# other 5 subregions. 333181421Sedwin 33493799Swollman# 3352742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 33620094Swollman# 337136638Swollman# Buenos Aires (BA), Capital Federal (CF), 338136638SwollmanZone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 33993799Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 34019878Swollman -4:00 - ART 1930 Dec 34158787Sru -4:00 Arg AR%sT 1969 Oct 5 34293799Swollman -3:00 Arg AR%sT 1999 Oct 3 34393799Swollman -4:00 Arg AR%sT 2000 Mar 3 344175034Sedwin -3:00 Arg AR%sT 34520094Swollman# 34620094Swollman# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), 347136638Swollman# Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB), 348181421Sedwin# La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 34920094Swollman# 350158421Swollman# Shanks & Pottenger also make the following claims, which we haven't verified: 35193799Swollman# - Formosa switched to -3:00 on 1991-01-07. 35293799Swollman# - Misiones switched to -3:00 on 1990-12-29. 35393799Swollman# - Chaco switched to -3:00 on 1991-01-04. 35493799Swollman# - Santiago del Estero switched to -4:00 on 1991-04-01, 35593799Swollman# then to -3:00 on 1991-04-26. 35693799Swollman# 357136638SwollmanZone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 35893799Swollman -4:16:48 - CMT 1920 May 35920094Swollman -4:00 - ART 1930 Dec 36058787Sru -4:00 Arg AR%sT 1969 Oct 5 36193799Swollman -3:00 Arg AR%sT 1991 Mar 3 36293799Swollman -4:00 - WART 1991 Oct 20 36393799Swollman -3:00 Arg AR%sT 1999 Oct 3 36493799Swollman -4:00 Arg AR%sT 2000 Mar 3 365175034Sedwin -3:00 Arg AR%sT 36620094Swollman# 367136638Swollman# Tucuman (TM) 368136638SwollmanZone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 369136638Swollman -4:16:48 - CMT 1920 May 370136638Swollman -4:00 - ART 1930 Dec 371136638Swollman -4:00 Arg AR%sT 1969 Oct 5 372136638Swollman -3:00 Arg AR%sT 1991 Mar 3 373136638Swollman -4:00 - WART 1991 Oct 20 374136638Swollman -3:00 Arg AR%sT 1999 Oct 3 375136638Swollman -4:00 Arg AR%sT 2000 Mar 3 376136638Swollman -3:00 - ART 2004 Jun 1 377136638Swollman -4:00 - WART 2004 Jun 13 378175034Sedwin -3:00 Arg AR%sT 379136638Swollman# 380136638Swollman# La Rioja (LR) 381136638SwollmanZone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 382136638Swollman -4:16:48 - CMT 1920 May 383136638Swollman -4:00 - ART 1930 Dec 384136638Swollman -4:00 Arg AR%sT 1969 Oct 5 385136638Swollman -3:00 Arg AR%sT 1991 Mar 1 386136638Swollman -4:00 - WART 1991 May 7 387136638Swollman -3:00 Arg AR%sT 1999 Oct 3 388136638Swollman -4:00 Arg AR%sT 2000 Mar 3 389136638Swollman -3:00 - ART 2004 Jun 1 390136638Swollman -4:00 - WART 2004 Jun 20 391175034Sedwin -3:00 Arg AR%sT 392136638Swollman# 393136638Swollman# San Juan (SJ) 394136638SwollmanZone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 395136638Swollman -4:16:48 - CMT 1920 May 396136638Swollman -4:00 - ART 1930 Dec 397136638Swollman -4:00 Arg AR%sT 1969 Oct 5 398136638Swollman -3:00 Arg AR%sT 1991 Mar 1 399136638Swollman -4:00 - WART 1991 May 7 400136638Swollman -3:00 Arg AR%sT 1999 Oct 3 401136638Swollman -4:00 Arg AR%sT 2000 Mar 3 402136638Swollman -3:00 - ART 2004 May 31 403136638Swollman -4:00 - WART 2004 Jul 25 404175034Sedwin -3:00 Arg AR%sT 405136638Swollman# 40620094Swollman# Jujuy (JY) 407136638SwollmanZone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 40893799Swollman -4:16:48 - CMT 1920 May 40920094Swollman -4:00 - ART 1930 Dec 41020094Swollman -4:00 Arg AR%sT 1969 Oct 5 41193799Swollman -3:00 Arg AR%sT 1990 Mar 4 41293799Swollman -4:00 - WART 1990 Oct 28 41393799Swollman -4:00 1:00 WARST 1991 Mar 17 41420094Swollman -4:00 - WART 1991 Oct 6 41593799Swollman -3:00 1:00 ARST 1992 41693799Swollman -3:00 Arg AR%sT 1999 Oct 3 41793799Swollman -4:00 Arg AR%sT 2000 Mar 3 418175034Sedwin -3:00 Arg AR%sT 41920094Swollman# 420149514Swollman# Catamarca (CT), Chubut (CH) 421136638SwollmanZone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 42293799Swollman -4:16:48 - CMT 1920 May 42320094Swollman -4:00 - ART 1930 Dec 42458787Sru -4:00 Arg AR%sT 1969 Oct 5 42593799Swollman -3:00 Arg AR%sT 1991 Mar 3 42693799Swollman -4:00 - WART 1991 Oct 20 42793799Swollman -3:00 Arg AR%sT 1999 Oct 3 42893799Swollman -4:00 Arg AR%sT 2000 Mar 3 429136638Swollman -3:00 - ART 2004 Jun 1 430136638Swollman -4:00 - WART 2004 Jun 20 431175034Sedwin -3:00 Arg AR%sT 43220094Swollman# 43320094Swollman# Mendoza (MZ) 434136638SwollmanZone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 43593799Swollman -4:16:48 - CMT 1920 May 43620094Swollman -4:00 - ART 1930 Dec 43720094Swollman -4:00 Arg AR%sT 1969 Oct 5 43893799Swollman -3:00 Arg AR%sT 1990 Mar 4 43993799Swollman -4:00 - WART 1990 Oct 15 44093799Swollman -4:00 1:00 WARST 1991 Mar 1 44120094Swollman -4:00 - WART 1991 Oct 15 44220094Swollman -4:00 1:00 WARST 1992 Mar 1 44320094Swollman -4:00 - WART 1992 Oct 18 44493799Swollman -3:00 Arg AR%sT 1999 Oct 3 44593799Swollman -4:00 Arg AR%sT 2000 Mar 3 446136638Swollman -3:00 - ART 2004 May 23 447136638Swollman -4:00 - WART 2004 Sep 26 448175034Sedwin -3:00 Arg AR%sT 449136638Swollman# 450177591Sedwin# San Luis (SL) 451177591SedwinZone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 452177591Sedwin -4:16:48 - CMT 1920 May 453177591Sedwin -4:00 - ART 1930 Dec 454177591Sedwin -4:00 Arg AR%sT 1969 Oct 5 455181421Sedwin -3:00 Arg AR%sT 1990 456181421Sedwin -3:00 1:00 ARST 1990 Mar 14 457181421Sedwin -4:00 - WART 1990 Oct 15 458181421Sedwin -4:00 1:00 WARST 1991 Mar 1 459181421Sedwin -4:00 - WART 1991 Jun 1 460181421Sedwin -3:00 - ART 1999 Oct 3 461181421Sedwin -4:00 1:00 WARST 2000 Mar 3 462177591Sedwin -3:00 - ART 2004 May 31 463177591Sedwin -4:00 - WART 2004 Jul 25 464177591Sedwin -3:00 Arg AR%sT 2008 Jan 21 465177591Sedwin -3:00 - ART 466177591Sedwin# 467136638Swollman# Santa Cruz (SC) 468136638SwollmanZone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 469136638Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 470136638Swollman -4:00 - ART 1930 Dec 471136638Swollman -4:00 Arg AR%sT 1969 Oct 5 472136638Swollman -3:00 Arg AR%sT 1999 Oct 3 473136638Swollman -4:00 Arg AR%sT 2000 Mar 3 474136638Swollman -3:00 - ART 2004 Jun 1 475136638Swollman -4:00 - WART 2004 Jun 20 476175034Sedwin -3:00 Arg AR%sT 477136638Swollman# 478136638Swollman# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 479136638SwollmanZone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 480136638Swollman -4:16:48 - CMT 1920 May # Cordoba Mean Time 481136638Swollman -4:00 - ART 1930 Dec 482136638Swollman -4:00 Arg AR%sT 1969 Oct 5 483136638Swollman -3:00 Arg AR%sT 1999 Oct 3 484136638Swollman -4:00 Arg AR%sT 2000 Mar 3 485136638Swollman -3:00 - ART 2004 May 30 486136638Swollman -4:00 - WART 2004 Jun 20 487175034Sedwin -3:00 Arg AR%sT 4888029Swollman 48914343Swollman# Aruba 49014343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 49114343SwollmanZone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 49219878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 49314343Swollman -4:00 - AST 49414343Swollman 4952742Swollman# Bolivia 4962742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 4972742SwollmanZone America/La_Paz -4:32:36 - LMT 1890 49886222Swollman -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 49919878Swollman -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 50019878Swollman -4:00 - BOT # Bolivia Time 5012742Swollman 5022742Swollman# Brazil 5032742Swollman 504149514Swollman# From Paul Eggert (1993-11-18): 5052742Swollman# The mayor of Rio recently attempted to change the time zone rules 5062742Swollman# just in his city, in order to leave more summer time for the tourist trade. 5072742Swollman# The rule change lasted only part of the day; 5082742Swollman# the federal government refused to follow the city's rules, and business 5092742Swollman# was in a chaos, so the mayor backed down that afternoon. 5102742Swollman 51120094Swollman# From IATA SSIM (1996-02): 51220094Swollman# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 51320094Swollman# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 51420094Swollman# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 51520094Swollman# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 51620094Swollman# [The last three states are new to this issue of the IATA SSIM.] 51720094Swollman 51820094Swollman# From Gwillim Law (1996-10-07): 51920094Swollman# Geography, history (Tocantins was part of Goias until 1989), and other 52020094Swollman# sources of time zone information lead me to believe that AL, SE, and TO were 52120094Swollman# always in BR1, and so the only change was whether or not they observed DST.... 52220094Swollman# The earliest issue of the SSIM I have is 2/91. Each issue from then until 52320094Swollman# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 52420094Swollman# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 52520094Swollman# (UTC-4).... The other two time zones given for Brazil are BR3, which is 52620094Swollman# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 52720094Swollman# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 52820094Swollman# become part of the state of Pernambuco). The boundary between BR1 and BR2 52920094Swollman# has never been clearly stated. They've simply been called East and West. 53020094Swollman# However, some conclusions can be drawn from another IATA manual: the Airline 53120094Swollman# Coding Directory, which lists close to 400 airports in Brazil. For each 53220094Swollman# airport it gives a time zone which is coded to the SSIM. From that 53320094Swollman# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 53420094Swollman# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 53520094Swollman# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 53620094Swollman 53743014Swollman# From Marcos Tadeu (1998-09-27): 53843014Swollman# <a href="http://pcdsh01.on.br/verao1.html"> 53943014Swollman# Brazilian official page 54043014Swollman# </a> 54175267Swollman 54275267Swollman# From Jesper Norgaard (2000-11-03): 54375267Swollman# [For an official list of which regions in Brazil use which time zones, see:] 54475267Swollman# http://pcdsh01.on.br/Fusbr.htm 54575267Swollman# http://pcdsh01.on.br/Fusbrhv.htm 54675267Swollman 547105196Swollman# From Celso Doria via David Madeo (2002-10-09): 548105196Swollman# The reason for the delay this year has to do with elections in Brazil. 549105196Swollman# 550105196Swollman# Unlike in the United States, elections in Brazil are 100% computerized and 551105196Swollman# the results are known almost immediately. Yesterday, it was the first 552105196Swollman# round of the elections when 115 million Brazilians voted for President, 553105196Swollman# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 554105196Swollman# counting (or re-counting) votes anymore and we know there will be a second 555105196Swollman# round for the Presidency and also for some Governors. The 2nd round will 556105196Swollman# take place on October 27th. 557105196Swollman# 558105196Swollman# The reason why the DST will only begin November 3rd is that the thousands 559105196Swollman# of electoral machines used cannot have their time changed, and since the 560105196Swollman# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 561105196Swollman# the Government decided to postpone DST, instead of changing the Constitution 562105196Swollman# (maybe, for the next elections, it will be possible to change the clock)... 563105196Swollman 564136638Swollman# From Rodrigo Severo (2004-10-04): 565136638Swollman# It's just the biannual change made necessary by the much hyped, supposedly 566136638Swollman# modern Brazilian eletronic voting machines which, apparently, can't deal 567136638Swollman# with a time change between the first and the second rounds of the elections. 568136638Swollman 569172479Sedwin# From Steffen Thorsen (2007-09-20): 570172479Sedwin# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 571172479Sedwin# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 572172479Sedwin 573181421Sedwin# From Paul Schulze (2008-06-24): 574181421Sedwin# ...by law number 11.662 of April 24, 2008 (published in the "Diario 575181421Sedwin# Oficial da Uniao"...) in Brazil there are changes in the timezones, 576181421Sedwin# effective today (00:00am at June 24, 2008) as follows: 577181421Sedwin# 578181421Sedwin# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 579181421Sedwin# part of the Amazonas state that had this timezone now being put to the 580181421Sedwin# timezone UTC+4 581181421Sedwin# b) The whole Para state now is put at timezone UTC+3, instead of just 582181421Sedwin# part of it, as was before. 583181421Sedwin# 584181421Sedwin# This change follows a proposal of senator Tiao Viana of Acre state, that 585181421Sedwin# proposed it due to concerns about open television channels displaying 586181421Sedwin# programs inappropriate to youths in the states that had the timezone 587181421Sedwin# UTC+5 too early in the night. In the occasion, some more corrections 588181421Sedwin# were proposed, trying to unify the timezones of any given state. This 589181421Sedwin# change modifies timezone rules defined in decree 2.784 of 18 June, 590181421Sedwin# 1913. 591181421Sedwin 592181421Sedwin# From Rodrigo Severo (2008-06-24): 593181421Sedwin# Just correcting the URL: 594181421Sedwin# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008"> 595181421Sedwin# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008 596181421Sedwin# </a> 597181421Sedwin# 598181421Sedwin# As a result of the above Decree I believe the America/Rio_Branco 599181421Sedwin# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 600181421Sedwin# be created to represent the the west side of the Para State. I 601181421Sedwin# suggest this new timezone be called Santarem as the most 602181421Sedwin# important/populated city in the affected area. 603181421Sedwin# 604181421Sedwin# This new timezone would be the same as the Rio_Branco timezone up to 605181421Sedwin# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 606181421Sedwin 607181421Sedwin# From Alex Krivenyshev (2008-06-24): 608181421Sedwin# This is a quick reference page for New and Old Brazil Time Zones map. 609181421Sedwin# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 610181421Sedwin# http://www.worldtimezone.com/brazil-time-new-old.php 611181421Sedwin# </a> 612181421Sedwin# 613181421Sedwin# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 614181421Sedwin# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 615181421Sedwin# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 616181421Sedwin 617105196Swollman# From Paul Eggert (2002-10-10): 618105196Swollman# The official decrees referenced below are mostly taken from 61943014Swollman# <a href="http://pcdsh01.on.br/DecHV.html"> 62043014Swollman# Decretos sobre o Horario de Verao no Brasil 621163302Sru# </a>. 62243014Swollman 623183066Sedwin# From Steffen Thorsen (2008-08-29): 624183066Sedwin# As announced by the government and many newspapers in Brazil late 625183066Sedwin# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 626183066Sedwin# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 627183066Sedwin# past years experience with the elections, there was a good chance that 628183066Sedwin# the start was postponed to November, but it did not happen this year. 629183066Sedwin# 630183066Sedwin# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 631183066Sedwin# 632183066Sedwin# An official page about it: 633183066Sedwin# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 634183066Sedwin# http://www.mme.gov.br/site/news/detail.do?newsId=16722 635183066Sedwin# </a> 636183066Sedwin# Note that this link does not always work directly, but must be accessed 637183066Sedwin# by going to 638183536Sedwin# <a href="http://www.mme.gov.br/first"> 639183066Sedwin# http://www.mme.gov.br/first 640183066Sedwin# </a> 641183066Sedwin# 642183066Sedwin# One example link that works directly: 643183066Sedwin# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 644183066Sedwin# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 645183066Sedwin# (Portuguese) 646183066Sedwin# </a> 647183066Sedwin# 648183066Sedwin# We have a written a short article about it as well: 649183066Sedwin# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 650183066Sedwin# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 651183066Sedwin# </a> 652183066Sedwin 6532742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 65443543Swollman# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 65543543Swollman# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 65658787SruRule Brazil 1931 only - Oct 3 11:00 1:00 S 65758787SruRule Brazil 1932 1933 - Apr 1 0:00 0 - 65858787SruRule Brazil 1932 only - Oct 3 0:00 1:00 S 65943543Swollman# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 66043014Swollman# revoked DST. 66143543Swollman# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 66243543Swollman# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 66358787SruRule Brazil 1949 1952 - Dec 1 0:00 1:00 S 66458787SruRule Brazil 1950 only - Apr 16 1:00 0 - 66558787SruRule Brazil 1951 1952 - Apr 1 0:00 0 - 66643543Swollman# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 66758787SruRule Brazil 1953 only - Mar 1 0:00 0 - 66843543Swollman# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 66943014Swollman# revoked DST. 67043543Swollman# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 67143543Swollman# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 67243543Swollman# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 67343543Swollman# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 67443543Swollman# extended the above decree to all of the national territory on 12-09. 67558787SruRule Brazil 1963 only - Dec 9 0:00 1:00 S 67643543Swollman# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 67743543Swollman# extended summer time by one day to 1964-03-01 00:00 (start of school). 67858787SruRule Brazil 1964 only - Mar 1 0:00 0 - 67943543Swollman# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 68058787SruRule Brazil 1965 only - Jan 31 0:00 1:00 S 68158787SruRule Brazil 1965 only - Mar 31 0:00 0 - 68243543Swollman# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 68358787SruRule Brazil 1965 only - Dec 1 0:00 1:00 S 68443543Swollman# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 68558787SruRule Brazil 1966 1968 - Mar 1 0:00 0 - 68658787SruRule Brazil 1966 1967 - Nov 1 0:00 1:00 S 68743543Swollman# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 68843543Swollman# revoked DST. 68943543Swollman# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 69058787SruRule Brazil 1985 only - Nov 2 0:00 1:00 S 69143543Swollman# Decree 92,310 (1986-01-21) 69243543Swollman# Decree 92,463 (1986-03-13) 69358787SruRule Brazil 1986 only - Mar 15 0:00 0 - 69443543Swollman# Decree 93,316 (1986-10-01) 69558787SruRule Brazil 1986 only - Oct 25 0:00 1:00 S 69658787SruRule Brazil 1987 only - Feb 14 0:00 0 - 69743543Swollman# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 69858787SruRule Brazil 1987 only - Oct 25 0:00 1:00 S 69958787SruRule Brazil 1988 only - Feb 7 0:00 0 - 70043543Swollman# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 70143543Swollman# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 70258787SruRule Brazil 1988 only - Oct 16 0:00 1:00 S 70358787SruRule Brazil 1989 only - Jan 29 0:00 0 - 70443543Swollman# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 70543543Swollman# with the same exceptions 70658787SruRule Brazil 1989 only - Oct 15 0:00 1:00 S 70758787SruRule Brazil 1990 only - Feb 11 0:00 0 - 70843543Swollman# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 70943543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 71043543Swollman# Decree 99,629 (1990-10-19) adds BA, MT. 71158787SruRule Brazil 1990 only - Oct 21 0:00 1:00 S 71258787SruRule Brazil 1991 only - Feb 17 0:00 0 - 71343543Swollman# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 71443543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 71558787SruRule Brazil 1991 only - Oct 20 0:00 1:00 S 71658787SruRule Brazil 1992 only - Feb 9 0:00 0 - 71743543Swollman# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 71843543Swollman# adopted by same states. 71958787SruRule Brazil 1992 only - Oct 25 0:00 1:00 S 72058787SruRule Brazil 1993 only - Jan 31 0:00 0 - 72143014Swollman# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 72243543Swollman# adopted by same states, plus AM. 723136638Swollman# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 724136638Swollman# web page corrected 2004-01-07) adopted by same states, minus AM. 72543543Swollman# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 726136638Swollman# adopted by same states, plus MT and TO. 72743543Swollman# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 72843543Swollman# adds AL, SE. 72958787SruRule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 73058787SruRule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 73158787SruRule Brazil 1996 only - Feb 11 0:00 0 - 73243543Swollman# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 73343543Swollman# adopted by same states, minus AL, SE. 73458787SruRule Brazil 1996 only - Oct 6 0:00 1:00 S 73558787SruRule Brazil 1997 only - Feb 16 0:00 0 - 736149514Swollman# From Daniel C. Sobral (1998-02-12): 73743014Swollman# In 1997, the DS began on October 6. The stated reason was that 73843014Swollman# because international television networks ignored Brazil's policy on DS, 73943014Swollman# they bought the wrong times on satellite for coverage of Pope's visit. 74043014Swollman# This year, the ending date of DS was postponed to March 1 74143014Swollman# to help dealing with the shortages of electric power. 74243014Swollman# 74343543Swollman# Decree 2,317 (1997-09-04), adopted by same states. 74458787SruRule Brazil 1997 only - Oct 6 0:00 1:00 S 74543543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 74643014Swollman# (1998-02-10) 74758787SruRule Brazil 1998 only - Mar 1 0:00 0 - 74843543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 74958787Sru# adopted by the same states as before. 75058787SruRule Brazil 1998 only - Oct 11 0:00 1:00 S 75158787SruRule Brazil 1999 only - Feb 21 0:00 0 - 75258787Sru# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 75358787Sru# (1999-08-23) adopted by same states. 75458787Sru# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 75567578Swollman# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 75667578SwollmanRule Brazil 1999 only - Oct 3 0:00 1:00 S 75767578SwollmanRule Brazil 2000 only - Feb 27 0:00 0 - 75867578Swollman# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 75967578Swollman# adopted by the same states as before. 76075267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 76175267Swollman# repeals DST in PE and RR, effective 2000-10-15 00:00. 76275267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 76375267Swollman# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 76486222Swollman# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 76586222Swollman# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 766105196SwollmanRule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 767163302SruRule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 768105196Swollman# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 769181421Sedwin# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 770105196SwollmanRule Brazil 2002 only - Nov 3 0:00 1:00 S 771121098Swollman# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 772181421Sedwin# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 773136638SwollmanRule Brazil 2003 only - Oct 19 0:00 1:00 S 774136638Swollman# Decree 5,223 (2004-10-01) reestablishes DST in MT. 775181421Sedwin# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 776136638SwollmanRule Brazil 2004 only - Nov 2 0:00 1:00 S 777153670Swollman# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 778153670Swollman# adopted by the same states as before. 779163302SruRule Brazil 2005 only - Oct 16 0:00 1:00 S 780172479Sedwin# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 781172479Sedwin# adopted by the same states as before. 782172479SedwinRule Brazil 2006 only - Nov 5 0:00 1:00 S 783172479SedwinRule Brazil 2007 only - Feb 25 0:00 0 - 784181421Sedwin# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 785181421Sedwin# adopted by the same states as before. 786183066SedwinRule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 787183536Sedwin# From Frederico A. C. Neves (2008-09-10): 788183536Sedwin# Acording to this decree 789183536Sedwin# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 790183536Sedwin# http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 791183536Sedwin# </a> 792183536Sedwin# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 793183536Sedwin# 3rd Feb Sunday. There is an exception on the return date when this is 794183536Sedwin# the Carnival Sunday then the return date will be the next Sunday... 795183536SedwinRule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 796183536SedwinRule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 797183536SedwinRule Brazil 2012 only - Feb Sun>=22 0:00 0 - 798183536SedwinRule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 799183536SedwinRule Brazil 2015 only - Feb Sun>=22 0:00 0 - 800183536SedwinRule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 801183536SedwinRule Brazil 2023 only - Feb Sun>=22 0:00 0 - 802183536SedwinRule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 803183536SedwinRule Brazil 2026 only - Feb Sun>=22 0:00 0 - 804183536SedwinRule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 805183536SedwinRule Brazil 2034 only - Feb Sun>=22 0:00 0 - 806183536SedwinRule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 807183536SedwinRule Brazil 2037 only - Feb Sun>=22 0:00 0 - 808183536Sedwin# From Arthur David Olson (2008-09-29): 809183536Sedwin# The next is wrong in some years but is better than nothing. 810183536SedwinRule Brazil 2038 max - Feb Sun>=15 0:00 0 - 811183536Sedwin 812121098Swollman# The latest ruleset listed above says that the following states observe DST: 813136638Swollman# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 81420094Swollman 8152742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 81620094Swollman# 817136638Swollman# Fernando de Noronha (administratively part of PE) 8182742SwollmanZone America/Noronha -2:09:40 - LMT 1914 81958787Sru -2:00 Brazil FN%sT 1990 Sep 17 820136638Swollman -2:00 - FNT 1999 Sep 30 821136638Swollman -2:00 Brazil FN%sT 2000 Oct 15 822136638Swollman -2:00 - FNT 2001 Sep 13 823136638Swollman -2:00 Brazil FN%sT 2002 Oct 1 82458787Sru -2:00 - FNT 825136638Swollman# Other Atlantic islands have no permanent settlement. 826136638Swollman# These include Trindade and Martin Vaz (administratively part of ES), 827136638Swollman# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 828136638Swollman# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 829136638Swollman# it also included the Penedos. 83020094Swollman# 83158787Sru# Amapa (AP), east Para (PA) 83275267Swollman# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 833121098Swollman# The division between east and west Para is the river Xingu. 834121098Swollman# In the north a very small part from the river Javary (now Jari I guess, 835121098Swollman# the border with Amapa) to the Amazon, then to the Xingu. 83643543SwollmanZone America/Belem -3:13:56 - LMT 1914 83758787Sru -3:00 Brazil BR%sT 1988 Sep 12 83858787Sru -3:00 - BRT 83943543Swollman# 840181421Sedwin# west Para (PA) 841181421Sedwin# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 842181421SedwinZone America/Santarem -3:38:48 - LMT 1914 843181421Sedwin -4:00 Brazil AM%sT 1988 Sep 12 844181421Sedwin -4:00 - AMT 2008 Jun 24 00:00 845181421Sedwin -3:00 - BRT 846181421Sedwin# 84758787Sru# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 84875267Swollman# Paraiba (PB) 84920094SwollmanZone America/Fortaleza -2:34:00 - LMT 1914 85058787Sru -3:00 Brazil BR%sT 1990 Sep 17 85158787Sru -3:00 - BRT 1999 Sep 30 85275267Swollman -3:00 Brazil BR%sT 2000 Oct 22 85386222Swollman -3:00 - BRT 2001 Sep 13 854105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 855105196Swollman -3:00 - BRT 85620094Swollman# 85775267Swollman# Pernambuco (PE) (except Atlantic islands) 85875267SwollmanZone America/Recife -2:19:36 - LMT 1914 85975267Swollman -3:00 Brazil BR%sT 1990 Sep 17 86075267Swollman -3:00 - BRT 1999 Sep 30 86175267Swollman -3:00 Brazil BR%sT 2000 Oct 15 86286222Swollman -3:00 - BRT 2001 Sep 13 863105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 864105196Swollman -3:00 - BRT 86575267Swollman# 86658787Sru# Tocantins (TO) 86743543SwollmanZone America/Araguaina -3:12:48 - LMT 1914 86858787Sru -3:00 Brazil BR%sT 1990 Sep 17 86958787Sru -3:00 - BRT 1995 Sep 14 870121098Swollman -3:00 Brazil BR%sT 2003 Sep 24 871121098Swollman -3:00 - BRT 87220094Swollman# 87358787Sru# Alagoas (AL), Sergipe (SE) 87443543SwollmanZone America/Maceio -2:22:52 - LMT 1914 87558787Sru -3:00 Brazil BR%sT 1990 Sep 17 87658787Sru -3:00 - BRT 1995 Oct 13 87758787Sru -3:00 Brazil BR%sT 1996 Sep 4 87858787Sru -3:00 - BRT 1999 Sep 30 87975267Swollman -3:00 Brazil BR%sT 2000 Oct 22 88086222Swollman -3:00 - BRT 2001 Sep 13 881105196Swollman -3:00 Brazil BR%sT 2002 Oct 1 882105196Swollman -3:00 - BRT 88343543Swollman# 884121098Swollman# Bahia (BA) 885121098Swollman# There are too many Salvadors elsewhere, so use America/Bahia instead 886121098Swollman# of America/Salvador. 887121098SwollmanZone America/Bahia -2:34:04 - LMT 1914 888121098Swollman -3:00 Brazil BR%sT 2003 Sep 24 889121098Swollman -3:00 - BRT 890121098Swollman# 891121098Swollman# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 89258787Sru# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 89358787Sru# Santa Catarina (SC), Rio Grande do Sul (RS) 8942742SwollmanZone America/Sao_Paulo -3:06:28 - LMT 1914 89558787Sru -3:00 Brazil BR%sT 1963 Oct 23 00:00 89658787Sru -3:00 1:00 BRST 1964 89758787Sru -3:00 Brazil BR%sT 89820094Swollman# 899121098Swollman# Mato Grosso do Sul (MS) 900121098SwollmanZone America/Campo_Grande -3:38:28 - LMT 1914 90158787Sru -4:00 Brazil AM%sT 90220094Swollman# 903121098Swollman# Mato Grosso (MT) 904121098SwollmanZone America/Cuiaba -3:44:20 - LMT 1914 905121098Swollman -4:00 Brazil AM%sT 2003 Sep 24 906138323Swollman -4:00 - AMT 2004 Oct 1 907136638Swollman -4:00 Brazil AM%sT 908121098Swollman# 909181421Sedwin# Rondonia (RO) 91043543SwollmanZone America/Porto_Velho -4:15:36 - LMT 1914 91158787Sru -4:00 Brazil AM%sT 1988 Sep 12 91258787Sru -4:00 - AMT 91343543Swollman# 91458787Sru# Roraima (RR) 91558787SruZone America/Boa_Vista -4:02:40 - LMT 1914 91658787Sru -4:00 Brazil AM%sT 1988 Sep 12 91758787Sru -4:00 - AMT 1999 Sep 30 91875267Swollman -4:00 Brazil AM%sT 2000 Oct 15 91975267Swollman -4:00 - AMT 92058787Sru# 92175267Swollman# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 922121098Swollman# The great circle line from Tabatinga to Porto Acre divides 923121098Swollman# east from west Amazonas. 9242742SwollmanZone America/Manaus -4:00:04 - LMT 1914 92558787Sru -4:00 Brazil AM%sT 1988 Sep 12 92658787Sru -4:00 - AMT 1993 Sep 28 92758787Sru -4:00 Brazil AM%sT 1994 Sep 22 92858787Sru -4:00 - AMT 92920094Swollman# 93075267Swollman# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 93175267Swollman# Eirunepe, Envira, Ipixuna 93275267SwollmanZone America/Eirunepe -4:39:28 - LMT 1914 93375267Swollman -5:00 Brazil AC%sT 1988 Sep 12 93475267Swollman -5:00 - ACT 1993 Sep 28 93575267Swollman -5:00 Brazil AC%sT 1994 Sep 22 936181421Sedwin -5:00 - ACT 2008 Jun 24 00:00 937181421Sedwin -4:00 - AMT 93875267Swollman# 93958787Sru# Acre (AC) 94075267SwollmanZone America/Rio_Branco -4:31:12 - LMT 1914 94158787Sru -5:00 Brazil AC%sT 1988 Sep 12 942181421Sedwin -5:00 - ACT 2008 Jun 24 00:00 943181421Sedwin -4:00 - AMT 9442742Swollman 9452742Swollman# Chile 9462742Swollman 94714343Swollman# From Eduardo Krell (1995-10-19): 94814343Swollman# The law says to switch to DST at midnight [24:00] on the second SATURDAY 94914343Swollman# of October.... The law is the same for March and October. 95043014Swollman# (1998-09-29): 95143014Swollman# Because of the drought this year, the government decided to go into 95243014Swollman# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 95343014Swollman# (unless there's another dry season next year, I guess). 9542742Swollman 95558787Sru# From Julio I. Pacheco Troncoso (1999-03-18): 95658787Sru# Because of the same drought, the government decided to end DST later, 95758787Sru# on April 3, (one-time change). 95858787Sru 959169811Swollman# From Oscar van Vlijmen (2006-10-08): 960169811Swollman# http://www.horaoficial.cl/cambio.htm 96175267Swollman 962169811Swollman# From Jesper Norgaard Welen (2006-10-08): 963169811Swollman# I think that there are some obvious mistakes in the suggested link 964169811Swollman# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 965169811Swollman# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 966169811Swollman# (they should have been 1990-09-15 and 1990-09-16 respectively), but 967169811Swollman# anyhow it clears up some doubts too. 96875267Swollman 969169811Swollman# From Paul Eggert (2006-12-27): 970169811Swollman# The following data for Chile and America/Santiago are from 971169811Swollman# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 972169811Swollman# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 973169811Swollman# & Pottenger, except with DST transitions after 1932 cloned from 974169811Swollman# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 975169811Swollman# but we have no other source. 976114173Swollman 977176974Sedwin# From German Poo-Caaman~o (2008-03-03): 978176974Sedwin# Due to drought, Chile extends Daylight Time in three weeks. This 979176974Sedwin# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 980176974Sedwin# and Saturday 3/29 at 22:00 for Pacific/Easter) 981176974Sedwin# The Supreme Decree is located at 982176974Sedwin# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 983176974Sedwin# http://www.shoa.cl/servicios/supremo316.pdf 984176974Sedwin# </a> 985176974Sedwin# and the instructions for 2008 are located in: 986176974Sedwin# <a href="http://www.horaoficial.cl/cambio.htm"> 987176974Sedwin# http://www.horaoficial.cl/cambio.htm 988176974Sedwin# </a>. 989176974Sedwin 990181421Sedwin# From Jose Miguel Garrido (2008-03-05): 991176974Sedwin# ... 992176974Sedwin# You could see the announces of the change on 993176974Sedwin# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 994176974Sedwin# http://www.shoa.cl/noticias/2008/04hora/hora.htm 995176974Sedwin# </a>. 996176974Sedwin 9972742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 998169811SwollmanRule Chile 1927 1932 - Sep 1 0:00 1:00 S 99958787SruRule Chile 1928 1932 - Apr 1 0:00 0 - 1000169811SwollmanRule Chile 1942 only - Jun 1 4:00u 0 - 1001169811SwollmanRule Chile 1942 only - Aug 1 5:00u 1:00 S 1002169811SwollmanRule Chile 1946 only - Jul 15 4:00u 1:00 S 1003169811SwollmanRule Chile 1946 only - Sep 1 3:00u 0:00 - 1004169811SwollmanRule Chile 1947 only - Apr 1 4:00u 0 - 1005169811SwollmanRule Chile 1968 only - Nov 3 4:00u 1:00 S 1006169811SwollmanRule Chile 1969 only - Mar 30 3:00u 0 - 1007169811SwollmanRule Chile 1969 only - Nov 23 4:00u 1:00 S 1008169811SwollmanRule Chile 1970 only - Mar 29 3:00u 0 - 1009169811SwollmanRule Chile 1971 only - Mar 14 3:00u 0 - 1010169811SwollmanRule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1011169811SwollmanRule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1012169811SwollmanRule Chile 1973 only - Sep 30 4:00u 1:00 S 1013169811SwollmanRule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1014169811SwollmanRule Chile 1987 only - Apr 12 3:00u 0 - 1015169811SwollmanRule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1016169811SwollmanRule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1017169811SwollmanRule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1018169811SwollmanRule Chile 1990 only - Mar 18 3:00u 0 - 1019169811SwollmanRule Chile 1990 only - Sep 16 4:00u 1:00 S 1020169811SwollmanRule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1021169811SwollmanRule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1022169811SwollmanRule Chile 1997 only - Mar 30 3:00u 0 - 1023169811SwollmanRule Chile 1998 only - Mar Sun>=9 3:00u 0 - 102475267SwollmanRule Chile 1998 only - Sep 27 4:00u 1:00 S 102575267SwollmanRule Chile 1999 only - Apr 4 3:00u 0 - 102675267SwollmanRule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 1027176974SedwinRule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1028176974Sedwin# N.B.: the end of March 29 in Chile is March 30 in Universal time, 1029176974Sedwin# which is used below in specifying the transition. 1030176974SedwinRule Chile 2008 only - Mar 30 3:00u 0 - 1031176974SedwinRule Chile 2009 max - Mar Sun>=9 3:00u 0 - 1032169811Swollman# IATA SSIM anomalies: (1992-02) says 1992-03-14; 103358787Sru# (1996-09) says 1998-03-08. Ignore these. 10342742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1035169811SwollmanZone America/Santiago -4:42:46 - LMT 1890 1036169811Swollman -4:42:46 - SMT 1910 # Santiago Mean Time 1037169811Swollman -5:00 - CLT 1916 Jul 1 # Chile Time 1038169811Swollman -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1039169811Swollman -4:00 - CLT 1919 Jul 1 # Chile Time 1040169811Swollman -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1041169811Swollman -5:00 Chile CL%sT 1947 May 22 # Chile Time 104219878Swollman -4:00 Chile CL%sT 1043169811SwollmanZone Pacific/Easter -7:17:44 - LMT 1890 1044169811Swollman -7:17:28 - EMT 1932 Sep # Easter Mean Time 1045158421Swollman -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 104619878Swollman -6:00 Chile EAS%sT 10472742Swollman# 104886222Swollman# Sala y Gomez Island is like Pacific/Easter. 104986222Swollman# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 105086222Swollman# San Felix, and Antarctic bases, are like America/Santiago. 10512742Swollman 10522742Swollman# Colombia 105320094Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1054158421SwollmanRule CO 1992 only - May 3 0:00 1:00 S 1055158421SwollmanRule CO 1993 only - Apr 4 0:00 0 - 10562742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 10572742SwollmanZone America/Bogota -4:56:20 - LMT 1884 Mar 13 105819878Swollman -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 105920094Swollman -5:00 CO CO%sT # Colombia Time 10602742Swollman# Malpelo, Providencia, San Andres 10612742Swollman# no information; probably like America/Bogota 10622742Swollman 10632742Swollman# Curacao 1064158421Swollman# 1065169811Swollman# From Paul Eggert (2006-03-22): 1066158421Swollman# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1067158421Swollman# -4:00 since standard time was introduced on 1912-03-02; and that 1068158421Swollman# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1069158421Swollman# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1070158421Swollman# Saba Island has been like Curacao. 1071169811Swollman# This all predates our 1970 cutoff, though. 1072158421Swollman# 1073158421Swollman# By July 2007 Curacao and St Maarten are planned to become 1074158421Swollman# associated states within the Netherlands, much like Aruba; 1075158421Swollman# Bonaire, Saba and St Eustatius would become directly part of the 1076158421Swollman# Netherlands as Kingdom Islands. This won't affect their time zones 1077158421Swollman# though, as far as we know. 1078169811Swollman# 10792742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 10802742SwollmanZone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 108119878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 10822742Swollman -4:00 - AST 10832742Swollman 10842742Swollman# Ecuador 1085169811Swollman# 1086169811Swollman# From Paul Eggert (2007-03-04): 1087169811Swollman# Apparently Ecuador had a failed experiment with DST in 1992. 1088169811Swollman# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1089169811Swollman# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1090169811Swollman# talk about "hora Sixto". Leave this alone for now, as we have no data. 1091169811Swollman# 10922742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 10932742SwollmanZone America/Guayaquil -5:19:20 - LMT 1890 109419878Swollman -5:14:00 - QMT 1931 # Quito Mean Time 109519878Swollman -5:00 - ECT # Ecuador Time 10962742SwollmanZone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 109719878Swollman -5:00 - ECT 1986 109819878Swollman -6:00 - GALT # Galapagos Time 10992742Swollman 11002742Swollman# Falklands 110175267Swollman 1102158421Swollman# From Paul Eggert (2006-03-22): 1103158421Swollman# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1104158421Swollman# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 110575267Swollman 110675267Swollman# From Falkland Islands Government Office, London (2001-01-22) 110775267Swollman# via Jesper Norgaard: 110875267Swollman# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 110975267Swollman# April 2001 and advance one hour to summer time at 2 am on Sunday 2 111075267Swollman# September. It is anticipated that the clocks will revert back at 2 111175267Swollman# am on Sunday 21 April 2002 and advance to summer time at 2 am on 111275267Swollman# Sunday 1 September. 111375267Swollman 111475267Swollman# From Rives McDow (2001-02-13): 111575267Swollman# 111675267Swollman# I have communicated several times with people there, and the last 111775267Swollman# time I had communications that was helpful was in 1998. Here is 111875267Swollman# what was said then: 111975267Swollman# 112075267Swollman# "The general rule was that Stanley used daylight saving and the Camp 112175267Swollman# did not. However for various reasons many people in the Camp have 112275267Swollman# started to use daylight saving (known locally as 'Stanley Time') 112375267Swollman# There is no rule as to who uses daylight saving - it is a matter of 112475267Swollman# personal choice and so it is impossible to draw a map showing who 112575267Swollman# uses it and who does not. Any list would be out of date as soon as 112675267Swollman# it was produced. This year daylight saving ended on April 18/19th 112775267Swollman# and started again on September 12/13th. I do not know what the rule 112875267Swollman# is, but can find out if you like. We do not change at the same time 112975267Swollman# as UK or Chile." 113075267Swollman# 113175267Swollman# I did have in my notes that the rule was "Second Saturday in Sep at 113275267Swollman# 0:00 until third Saturday in Apr at 0:00". I think that this does 113375267Swollman# not agree in some cases with Shanks; is this true? 113475267Swollman# 113575267Swollman# Also, there is no mention in the list that some areas in the 113675267Swollman# Falklands do not use DST. I have found in my communications there 113775267Swollman# that these areas are on the western half of East Falkland and all of 113875267Swollman# West Falkland. Stanley is the only place that consistently observes 113975267Swollman# DST. Again, as in other places in the world, the farmers don't like 114075267Swollman# it. West Falkland is almost entirely sheep farmers. 114175267Swollman# 114275267Swollman# I know one lady there that keeps a list of which farm keeps DST and 114375267Swollman# which doesn't each year. She runs a shop in Stanley, and says that 114475267Swollman# the list changes each year. She uses it to communicate to her 114575267Swollman# customers, catching them when they are home for lunch or dinner. 114675267Swollman 114775267Swollman# From Paul Eggert (2001-03-05): 114875267Swollman# For now, we'll just record the time in Stanley, since we have no 114975267Swollman# better info. 115075267Swollman 11512742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 115219878SwollmanRule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 115319878SwollmanRule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 115419878SwollmanRule Falk 1939 only - Oct 1 0:00 1:00 S 115519878SwollmanRule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 115619878SwollmanRule Falk 1943 only - Jan 1 0:00 0 - 115719878SwollmanRule Falk 1983 only - Sep lastSun 0:00 1:00 S 115819878SwollmanRule Falk 1984 1985 - Apr lastSun 0:00 0 - 115919878SwollmanRule Falk 1984 only - Sep 16 0:00 1:00 S 116075267SwollmanRule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 116175267SwollmanRule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 116275267SwollmanRule Falk 2001 max - Apr Sun>=15 2:00 0 - 116375267SwollmanRule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 11642742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 11652742SwollmanZone Atlantic/Stanley -3:51:24 - LMT 1890 116619878Swollman -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 116719878Swollman -4:00 Falk FK%sT 1983 May # Falkland Is Time 116819878Swollman -3:00 Falk FK%sT 1985 Sep 15 116919878Swollman -4:00 Falk FK%sT 11702742Swollman 11712742Swollman# French Guiana 11722742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 11732742SwollmanZone America/Cayenne -3:29:20 - LMT 1911 Jul 117419878Swollman -4:00 - GFT 1967 Oct # French Guiana Time 117519878Swollman -3:00 - GFT 11762742Swollman 11772742Swollman# Guyana 11782742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 11792742SwollmanZone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 118019878Swollman -3:45 - GBGT 1966 May 26 # Br Guiana Time 118119878Swollman -3:45 - GYT 1975 Jul 31 # Guyana Time 118220094Swollman -3:00 - GYT 1991 118320094Swollman# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 118420094Swollman -4:00 - GYT 11852742Swollman 11862742Swollman# Paraguay 1187158421Swollman# From Paul Eggert (2006-03-22): 1188158421Swollman# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1189158421Swollman# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 119058787Sru# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 11912742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 119258787SruRule Para 1975 1988 - Oct 1 0:00 1:00 S 119319878SwollmanRule Para 1975 1978 - Mar 1 0:00 0 - 119458787SruRule Para 1979 1991 - Apr 1 0:00 0 - 119519878SwollmanRule Para 1989 only - Oct 22 0:00 1:00 S 119620094SwollmanRule Para 1990 only - Oct 1 0:00 1:00 S 119720094SwollmanRule Para 1991 only - Oct 6 0:00 1:00 S 119820094SwollmanRule Para 1992 only - Mar 1 0:00 0 - 119920094SwollmanRule Para 1992 only - Oct 5 0:00 1:00 S 120020094SwollmanRule Para 1993 only - Mar 31 0:00 0 - 120130711SwollmanRule Para 1993 1995 - Oct 1 0:00 1:00 S 120220094SwollmanRule Para 1994 1995 - Feb lastSun 0:00 0 - 120358787SruRule Para 1996 only - Mar 1 0:00 0 - 120475267Swollman# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 120567578Swollman# From Steffen Thorsen (2000-10-02): 120667578Swollman# I have three independent reports that Paraguay changed to DST this Sunday 120767578Swollman# (10-01). 120875267Swollman# 120975267Swollman# Translated by Gwillim Law (2001-02-27) from 121075267Swollman# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 121175267Swollman# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 121275267Swollman# </a>: 121375267Swollman# Starting at 0:00 today, the clock will be set forward 60 minutes, in 121475267Swollman# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 121575267Swollman# system has been operating for several years. Formerly there was a separate 121675267Swollman# decree each year; the new law has the same effect, but permanently. Every 121775267Swollman# year, the time will change on the first Sunday of October; likewise, the 121875267Swollman# clock will be set back on the first Sunday of March. 121975267Swollman# 122093799SwollmanRule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1221158421Swollman# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 122275267SwollmanRule Para 1997 only - Feb lastSun 0:00 0 - 1223158421Swollman# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 122475267Swollman# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 122593799SwollmanRule Para 1998 2001 - Mar Sun>=1 0:00 0 - 122693799Swollman# From Rives McDow (2002-02-28): 122793799Swollman# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 122893799Swollman# dst method to be from the first Sunday in September to the first Sunday in 122993799Swollman# April. 1230149514SwollmanRule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1231149514SwollmanRule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1232149514Swollman# 1233149514Swollman# From Jesper Norgaard Welen (2005-01-02): 1234149514Swollman# There are several sources that claim that Paraguay made 1235149514Swollman# a timezone rule change in autumn 2004. 1236149514Swollman# From Steffen Thorsen (2005-01-05): 1237169811Swollman# Decree 1,867 (2004-03-05) 1238169811Swollman# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1239169811Swollman# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1240149514SwollmanRule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1241149514SwollmanRule Para 2005 max - Mar Sun>=8 0:00 0 - 124275267Swollman 12432742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12442742SwollmanZone America/Asuncion -3:50:40 - LMT 1890 124519878Swollman -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 124619878Swollman -4:00 - PYT 1972 Oct # Paraguay Time 124719878Swollman -3:00 - PYT 1974 Apr 124819878Swollman -4:00 Para PY%sT 12492742Swollman 12502742Swollman# Peru 1251136638Swollman# 1252136638Swollman# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1253136638Swollman# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1254149514Swollman# When we were in Peru in 1985-1986, they apparently switched over 1255136638Swollman# sometime between December 29 and January 3 while we were on the Amazon. 1256136638Swollman# 1257158421Swollman# From Paul Eggert (2006-03-22): 1258158421Swollman# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1259136638Swollman 12602742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 126119878SwollmanRule Peru 1938 only - Jan 1 0:00 1:00 S 126219878SwollmanRule Peru 1938 only - Apr 1 0:00 0 - 126319878SwollmanRule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 126419878SwollmanRule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1265136638SwollmanRule Peru 1986 1987 - Jan 1 0:00 1:00 S 1266136638SwollmanRule Peru 1986 1987 - Apr 1 0:00 0 - 126719878SwollmanRule Peru 1990 only - Jan 1 0:00 1:00 S 126819878SwollmanRule Peru 1990 only - Apr 1 0:00 0 - 1269158421Swollman# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 127058787SruRule Peru 1994 only - Jan 1 0:00 1:00 S 127158787SruRule Peru 1994 only - Apr 1 0:00 0 - 12722742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12732742SwollmanZone America/Lima -5:08:12 - LMT 1890 127486222Swollman -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 127519878Swollman -5:00 Peru PE%sT # Peru Time 12762742Swollman 12772742Swollman# South Georgia 12782742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12792742SwollmanZone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 128019878Swollman -2:00 - GST # South Georgia Time 12812742Swollman 12822742Swollman# South Sandwich Is 128358787Sru# uninhabited; scientific personnel have wintered 12842742Swollman 12852742Swollman# Suriname 12862742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12872742SwollmanZone America/Paramaribo -3:40:40 - LMT 1911 12882742Swollman -3:40:52 - PMT 1935 # Paramaribo Mean Time 12892742Swollman -3:40:36 - PMT 1945 Oct # The capital moved? 129019878Swollman -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 129119878Swollman -3:30 - SRT 1984 Oct # Suriname Time 129219878Swollman -3:00 - SRT 12932742Swollman 12942742Swollman# Trinidad and Tobago 12952742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 12962742SwollmanZone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 12972742Swollman -4:00 - AST 12982742Swollman 12992742Swollman# Uruguay 1300149514Swollman# From Paul Eggert (1993-11-18): 13012742Swollman# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1302158421Swollman# From Shanks & Pottenger: 13032742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1304158421Swollman# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 130519878SwollmanRule Uruguay 1923 only - Oct 2 0:00 0:30 HS 130619878SwollmanRule Uruguay 1924 1926 - Apr 1 0:00 0 - 130719878SwollmanRule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 130819878SwollmanRule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1309158421Swollman# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 131019878SwollmanRule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 131119878SwollmanRule Uruguay 1936 only - Nov 1 0:00 0:30 HS 131219878SwollmanRule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1313158421Swollman# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 131419878SwollmanRule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 13152742Swollman# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1316158421Swollman# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1317158421SwollmanRule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1318158421SwollmanRule Uruguay 1942 only - Jan 1 0:00 0 - 131919878SwollmanRule Uruguay 1942 only - Dec 14 0:00 1:00 S 132019878SwollmanRule Uruguay 1943 only - Mar 14 0:00 0 - 132119878SwollmanRule Uruguay 1959 only - May 24 0:00 1:00 S 132219878SwollmanRule Uruguay 1959 only - Nov 15 0:00 0 - 132319878SwollmanRule Uruguay 1960 only - Jan 17 0:00 1:00 S 132419878SwollmanRule Uruguay 1960 only - Mar 6 0:00 0 - 132519878SwollmanRule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 132619878SwollmanRule Uruguay 1965 only - Sep 26 0:00 0 - 132719878SwollmanRule Uruguay 1966 1967 - Oct 31 0:00 0 - 132819878SwollmanRule Uruguay 1968 1970 - May 27 0:00 0:30 HS 132919878SwollmanRule Uruguay 1968 1970 - Dec 2 0:00 0 - 133019878SwollmanRule Uruguay 1972 only - Apr 24 0:00 1:00 S 133119878SwollmanRule Uruguay 1972 only - Aug 15 0:00 0 - 133219878SwollmanRule Uruguay 1974 only - Mar 10 0:00 0:30 HS 133319878SwollmanRule Uruguay 1974 only - Dec 22 0:00 1:00 S 133419878SwollmanRule Uruguay 1976 only - Oct 1 0:00 0 - 133519878SwollmanRule Uruguay 1977 only - Dec 4 0:00 1:00 S 133619878SwollmanRule Uruguay 1978 only - Apr 1 0:00 0 - 133719878SwollmanRule Uruguay 1979 only - Oct 1 0:00 1:00 S 133819878SwollmanRule Uruguay 1980 only - May 1 0:00 0 - 133919878SwollmanRule Uruguay 1987 only - Dec 14 0:00 1:00 S 134019878SwollmanRule Uruguay 1988 only - Mar 14 0:00 0 - 134119878SwollmanRule Uruguay 1988 only - Dec 11 0:00 1:00 S 134219878SwollmanRule Uruguay 1989 only - Mar 12 0:00 0 - 134319878SwollmanRule Uruguay 1989 only - Oct 29 0:00 1:00 S 1344158421Swollman# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 134558787Sru# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 134620094SwollmanRule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 134720094SwollmanRule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 134830711SwollmanRule Uruguay 1992 only - Oct 18 0:00 1:00 S 134920094SwollmanRule Uruguay 1993 only - Feb 28 0:00 0 - 1350136638Swollman# From Eduardo Cota (2004-09-20): 1351136638Swollman# The uruguayan government has decreed a change in the local time.... 1352136638Swollman# http://www.presidencia.gub.uy/decretos/2004091502.htm 1353149514SwollmanRule Uruguay 2004 only - Sep 19 0:00 1:00 S 1354149514Swollman# From Steffen Thorsen (2005-03-11): 1355149514Swollman# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1356149514Swollman# save energy ... it was postponed two weeks.... 1357149514Swollman# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1358149514SwollmanRule Uruguay 2005 only - Mar 27 2:00 0 - 1359153670Swollman# From Eduardo Cota (2005-09-27): 1360153670Swollman# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1361153670Swollman# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1362153670Swollman# 02:00 local time, official time in Uruguay will be at GMT -2. 1363153670SwollmanRule Uruguay 2005 only - Oct 9 2:00 1:00 S 1364153670SwollmanRule Uruguay 2006 only - Mar 12 2:00 0 - 1365163302Sru# From Jesper Norgaard Welen (2006-09-06): 1366163302Sru# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1367163302SruRule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1368163302SruRule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 13692742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 13702742SwollmanZone America/Montevideo -3:44:44 - LMT 1898 Jun 28 137119878Swollman -3:44:44 - MMT 1920 May 1 # Montevideo MT 137219878Swollman -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 137319878Swollman -3:00 Uruguay UY%sT 13742742Swollman 13752742Swollman# Venezuela 1376172479Sedwin# 1377174242Sedwin# From John Stainforth (2007-11-28): 1378174242Sedwin# ... the change for Venezuela originally expected for 2007-12-31 has 1379174242Sedwin# been brought forward to 2007-12-09. The official announcement was 1380174242Sedwin# published today in the "Gaceta Oficial de la Republica Bolivariana 1381174242Sedwin# de Venezuela, numero 38.819" (official document for all laws or 1382174242Sedwin# resolution publication) 1383174242Sedwin# http://www.globovision.com/news.php?nid=72208 1384172479Sedwin 13852742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 13862742SwollmanZone America/Caracas -4:27:44 - LMT 1890 138786222Swollman -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 138819878Swollman -4:30 - VET 1965 # Venezuela Time 1389174242Sedwin -4:00 - VET 2007 Dec 9 03:00 1390172479Sedwin -4:30 - VET 1391