1# @(#)southamerica 8.26
| 1# @(#)southamerica 8.27
|
2# <pre> 3 4# This data is by no means authoritative; if you think you know better, 5# go ahead and edit the file (and please send any changes to 6# tz@elsie.nci.nih.gov for general use in the future). 7 8# From Paul Eggert (2006-03-22): 9# A good source for time zone historical data outside the U.S. is 10# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 11# San Diego: ACS Publications, Inc. (2003). 12# 13# Gwillim Law writes that a good source 14# for recent time zone data is the International Air Transport 15# Association's Standard Schedules Information Manual (IATA SSIM), 16# published semiannually. Law sent in several helpful summaries 17# of the IATA's data after 1990. 18# 19# Except where otherwise noted, Shanks & Pottenger is the source for 20# entries through 1990, and IATA SSIM is the source for entries afterwards. 21# 22# Earlier editions of these tables used the North American style (e.g. ARST and 23# ARDT for Argentine Standard and Daylight Time), but the following quote 24# suggests that it's better to use European style (e.g. ART and ARST). 25# I suggest the use of _Summer time_ instead of the more cumbersome 26# _daylight-saving time_. _Summer time_ seems to be in general use 27# in Europe and South America. 28# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 29# H L Mencken, _The American Language: Supplement I_ (1960), p 466 30# 31# Earlier editions of these tables also used the North American style 32# for time zones in Brazil, but this was incorrect, as Brazilians say 33# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 34# the railroad sector, writes (1999-07-06): 35# The subject of time zones is currently a matter of discussion/debate in 36# Brazil. Let's say that "the Brasilia time" is considered the 37# "official time" because Brasilia is the capital city. 38# The other three time zones are called "Brasilia time "minus one" or 39# "plus one" or "plus two". As far as I know there is no such 40# name/designation as "Eastern Time" or "Central Time". 41# So I invented the following (English-language) abbreviations for now. 42# Corrections are welcome! 43# std dst 44# -2:00 FNT FNST Fernando de Noronha 45# -3:00 BRT BRST Brasilia 46# -4:00 AMT AMST Amazon 47# -5:00 ACT ACST Acre 48 49############################################################################### 50 51############################################################################### 52 53# Argentina 54 55# From Bob Devine (1988-01-28): 56# Argentina: first Sunday in October to first Sunday in April since 1976. 57# Double Summer time from 1969 to 1974. Switches at midnight. 58 59# From U. S. Naval Observatory (1988-01-199): 60# ARGENTINA 3 H BEHIND UTC 61 62# From Hernan G. Otero (1995-06-26): 63# I am sending modifications to the Argentine time zone table... 64# AR was chosen because they are the ISO letters that represent Argentina. 65 66# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 67Rule Arg 1930 only - Dec 1 0:00 1:00 S 68Rule Arg 1931 only - Apr 1 0:00 0 - 69Rule Arg 1931 only - Oct 15 0:00 1:00 S 70Rule Arg 1932 1940 - Mar 1 0:00 0 - 71Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 72Rule Arg 1940 only - Jul 1 0:00 1:00 S 73Rule Arg 1941 only - Jun 15 0:00 0 - 74Rule Arg 1941 only - Oct 15 0:00 1:00 S 75Rule Arg 1943 only - Aug 1 0:00 0 - 76Rule Arg 1943 only - Oct 15 0:00 1:00 S 77Rule Arg 1946 only - Mar 1 0:00 0 - 78Rule Arg 1946 only - Oct 1 0:00 1:00 S 79Rule Arg 1963 only - Oct 1 0:00 0 - 80Rule Arg 1963 only - Dec 15 0:00 1:00 S 81Rule Arg 1964 1966 - Mar 1 0:00 0 - 82Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 83Rule Arg 1967 only - Apr 2 0:00 0 - 84Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 85Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 86Rule Arg 1974 only - Jan 23 0:00 1:00 S 87Rule Arg 1974 only - May 1 0:00 0 - 88Rule Arg 1988 only - Dec 1 0:00 1:00 S 89# 90# From Hernan G. Otero (1995-06-26): 91# These corrections were contributed by InterSoft Argentina S.A., 92# obtaining the data from the: 93# Talleres de Hidrografia Naval Argentina 94# (Argentine Naval Hydrography Institute) 95Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 96Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 97# 98# From Hernan G. Otero (1995-06-26): 99# From this moment on, the law that mandated the daylight saving 100# time corrections was derogated and no more modifications 101# to the time zones (for daylight saving) are now made. 102# 103# From Rives McDow (2000-01-10): 104# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 105# which did not result in the switch of a time zone, as they stayed 9 hours 106# from the International Date Line. 107Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 108# From Paul Eggert (2007-12-28): 109# DST was set to expire on March 5, not March 3, but since it was converted 110# to standard time on March 3 it's more convenient for us to pretend that 111# it ended on March 3. 112Rule Arg 2000 only - Mar 3 0:00 0 - 113# 114# From Peter Gradelski via Steffen Thorsen (2000-03-01): 115# We just checked with our Sao Paulo office and they say the government of 116# Argentina decided not to become one of the countries that go on or off DST. 117# So Buenos Aires should be -3 hours from GMT at all times. 118# 119# From Fabian L. Arce Jofre (2000-04-04): 120# The law that claimed DST for Argentina was derogated by President Fernando 121# de la Rua on March 2, 2000, because it would make people spend more energy 122# in the winter time, rather than less. The change took effect on March 3. 123# 124# From Mariano Absatz (2001-06-06): 125# one of the major newspapers here in Argentina said that the 1999 126# Timezone Law (which never was effectively applied) will (would?) be 127# in effect.... The article is at 128# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 129# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 130# 1999-09-17, and published 1999-09-21. The official publication is at: 131# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 132# Regretfully, you have to subscribe (and pay) for the on-line version.... 133# 134# (2001-06-12): 135# the timezone for Argentina will not change next Sunday. 136# Apparently it will do so on Sunday 24th.... 137# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 138# 139# (2001-06-25): 140# Last Friday (yes, the last working day before the date of the change), the 141# Senate annulled the 1999 law that introduced the changes later postponed. 142# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 143# It remains the vote of the Deputies..., but it will be the same.... 144# This kind of things had always been done this way in Argentina. 145# We are still -03:00 all year round in all of the country. 146# 147# From Steffen Thorsen (2007-12-21): 148# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 149# all of the country (all Zone-entries) are affected. News reports like 150# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 151# that Argentina will use DST next year as well, from October to 152# March, although exact rules are not given. 153# 154# From Jesper Norgaard Welen (2007-12-26) 155# The last hurdle of Argentina DST is over, the proposal was approved in 156# the lower chamber too (Deputados) with a vote 192 for and 2 against. 157# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 158# the original scanned proposal, where the dates and the zero hours are 159# clear and unambiguous...This is the article about final approval: 160# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 161# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 162# </a> 163# 164# From Paul Eggert (2007-12-22): 165# For dates after mid-2008, the following rules are my guesses and 166# are quite possibly wrong, but are more likely than no DST at all.
| 2# <pre> 3 4# This data is by no means authoritative; if you think you know better, 5# go ahead and edit the file (and please send any changes to 6# tz@elsie.nci.nih.gov for general use in the future). 7 8# From Paul Eggert (2006-03-22): 9# A good source for time zone historical data outside the U.S. is 10# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 11# San Diego: ACS Publications, Inc. (2003). 12# 13# Gwillim Law writes that a good source 14# for recent time zone data is the International Air Transport 15# Association's Standard Schedules Information Manual (IATA SSIM), 16# published semiannually. Law sent in several helpful summaries 17# of the IATA's data after 1990. 18# 19# Except where otherwise noted, Shanks & Pottenger is the source for 20# entries through 1990, and IATA SSIM is the source for entries afterwards. 21# 22# Earlier editions of these tables used the North American style (e.g. ARST and 23# ARDT for Argentine Standard and Daylight Time), but the following quote 24# suggests that it's better to use European style (e.g. ART and ARST). 25# I suggest the use of _Summer time_ instead of the more cumbersome 26# _daylight-saving time_. _Summer time_ seems to be in general use 27# in Europe and South America. 28# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 29# H L Mencken, _The American Language: Supplement I_ (1960), p 466 30# 31# Earlier editions of these tables also used the North American style 32# for time zones in Brazil, but this was incorrect, as Brazilians say 33# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 34# the railroad sector, writes (1999-07-06): 35# The subject of time zones is currently a matter of discussion/debate in 36# Brazil. Let's say that "the Brasilia time" is considered the 37# "official time" because Brasilia is the capital city. 38# The other three time zones are called "Brasilia time "minus one" or 39# "plus one" or "plus two". As far as I know there is no such 40# name/designation as "Eastern Time" or "Central Time". 41# So I invented the following (English-language) abbreviations for now. 42# Corrections are welcome! 43# std dst 44# -2:00 FNT FNST Fernando de Noronha 45# -3:00 BRT BRST Brasilia 46# -4:00 AMT AMST Amazon 47# -5:00 ACT ACST Acre 48 49############################################################################### 50 51############################################################################### 52 53# Argentina 54 55# From Bob Devine (1988-01-28): 56# Argentina: first Sunday in October to first Sunday in April since 1976. 57# Double Summer time from 1969 to 1974. Switches at midnight. 58 59# From U. S. Naval Observatory (1988-01-199): 60# ARGENTINA 3 H BEHIND UTC 61 62# From Hernan G. Otero (1995-06-26): 63# I am sending modifications to the Argentine time zone table... 64# AR was chosen because they are the ISO letters that represent Argentina. 65 66# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 67Rule Arg 1930 only - Dec 1 0:00 1:00 S 68Rule Arg 1931 only - Apr 1 0:00 0 - 69Rule Arg 1931 only - Oct 15 0:00 1:00 S 70Rule Arg 1932 1940 - Mar 1 0:00 0 - 71Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 72Rule Arg 1940 only - Jul 1 0:00 1:00 S 73Rule Arg 1941 only - Jun 15 0:00 0 - 74Rule Arg 1941 only - Oct 15 0:00 1:00 S 75Rule Arg 1943 only - Aug 1 0:00 0 - 76Rule Arg 1943 only - Oct 15 0:00 1:00 S 77Rule Arg 1946 only - Mar 1 0:00 0 - 78Rule Arg 1946 only - Oct 1 0:00 1:00 S 79Rule Arg 1963 only - Oct 1 0:00 0 - 80Rule Arg 1963 only - Dec 15 0:00 1:00 S 81Rule Arg 1964 1966 - Mar 1 0:00 0 - 82Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 83Rule Arg 1967 only - Apr 2 0:00 0 - 84Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 85Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 86Rule Arg 1974 only - Jan 23 0:00 1:00 S 87Rule Arg 1974 only - May 1 0:00 0 - 88Rule Arg 1988 only - Dec 1 0:00 1:00 S 89# 90# From Hernan G. Otero (1995-06-26): 91# These corrections were contributed by InterSoft Argentina S.A., 92# obtaining the data from the: 93# Talleres de Hidrografia Naval Argentina 94# (Argentine Naval Hydrography Institute) 95Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 96Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 97# 98# From Hernan G. Otero (1995-06-26): 99# From this moment on, the law that mandated the daylight saving 100# time corrections was derogated and no more modifications 101# to the time zones (for daylight saving) are now made. 102# 103# From Rives McDow (2000-01-10): 104# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 105# which did not result in the switch of a time zone, as they stayed 9 hours 106# from the International Date Line. 107Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 108# From Paul Eggert (2007-12-28): 109# DST was set to expire on March 5, not March 3, but since it was converted 110# to standard time on March 3 it's more convenient for us to pretend that 111# it ended on March 3. 112Rule Arg 2000 only - Mar 3 0:00 0 - 113# 114# From Peter Gradelski via Steffen Thorsen (2000-03-01): 115# We just checked with our Sao Paulo office and they say the government of 116# Argentina decided not to become one of the countries that go on or off DST. 117# So Buenos Aires should be -3 hours from GMT at all times. 118# 119# From Fabian L. Arce Jofre (2000-04-04): 120# The law that claimed DST for Argentina was derogated by President Fernando 121# de la Rua on March 2, 2000, because it would make people spend more energy 122# in the winter time, rather than less. The change took effect on March 3. 123# 124# From Mariano Absatz (2001-06-06): 125# one of the major newspapers here in Argentina said that the 1999 126# Timezone Law (which never was effectively applied) will (would?) be 127# in effect.... The article is at 128# http://ar.clarin.com/diario/2001-06-06/e-01701.htm 129# ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 130# 1999-09-17, and published 1999-09-21. The official publication is at: 131# http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 132# Regretfully, you have to subscribe (and pay) for the on-line version.... 133# 134# (2001-06-12): 135# the timezone for Argentina will not change next Sunday. 136# Apparently it will do so on Sunday 24th.... 137# http://ar.clarin.com/diario/2001-06-12/s-03501.htm 138# 139# (2001-06-25): 140# Last Friday (yes, the last working day before the date of the change), the 141# Senate annulled the 1999 law that introduced the changes later postponed. 142# http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 143# It remains the vote of the Deputies..., but it will be the same.... 144# This kind of things had always been done this way in Argentina. 145# We are still -03:00 all year round in all of the country. 146# 147# From Steffen Thorsen (2007-12-21): 148# A user (Leonardo Chaim) reported that Argentina will adopt DST.... 149# all of the country (all Zone-entries) are affected. News reports like 150# http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 151# that Argentina will use DST next year as well, from October to 152# March, although exact rules are not given. 153# 154# From Jesper Norgaard Welen (2007-12-26) 155# The last hurdle of Argentina DST is over, the proposal was approved in 156# the lower chamber too (Deputados) with a vote 192 for and 2 against. 157# By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 158# the original scanned proposal, where the dates and the zero hours are 159# clear and unambiguous...This is the article about final approval: 160# <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 161# http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 162# </a> 163# 164# From Paul Eggert (2007-12-22): 165# For dates after mid-2008, the following rules are my guesses and 166# are quite possibly wrong, but are more likely than no DST at all.
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| 167 168# From Alexander Krivenyshev (2008-09-05): 169# As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 170# Argentina will start DST on Sunday October 19, 2008. 171# 172# <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 173# http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 174# </a> 175# OR 176# <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 177# http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 178# </a> 179
|
167Rule Arg 2007 only - Dec 30 0:00 1:00 S 168Rule Arg 2008 max - Mar Sun>=15 0:00 0 -
| 180Rule Arg 2007 only - Dec 30 0:00 1:00 S 181Rule Arg 2008 max - Mar Sun>=15 0:00 0 -
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169Rule Arg 2008 max - Oct Sun>=1 0:00 1:00 S
| 182Rule Arg 2008 max - Oct Sun>=15 0:00 1:00 S
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170 171# From Mariano Absatz (2004-05-21): 172# Today it was officially published that the Province of Mendoza is changing 173# its timezone this winter... starting tomorrow night.... 174# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 175# From Paul Eggert (2004-05-24): 176# It's Law No. 7,210. This change is due to a public power emergency, so for 177# now we'll assume it's for this year only. 178# 179# From Paul Eggert (2006-03-22): 180# <a href="http://www.spicasc.net/horvera.html"> 181# Hora de verano para la Republica Argentina (2003-06-08) 182# </a> says that standard time in Argentina from 1894-10-31 183# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 184# over Shanks & Pottenger. 185# 186# From Mariano Absatz (2004-06-05): 187# These media articles from a major newspaper mostly cover the current state: 188# http://www.lanacion.com.ar/04/05/27/de_604825.asp 189# http://www.lanacion.com.ar/04/05/28/de_605203.asp 190# 191# The following eight (8) provinces pulled clocks back to UTC-04:00 at 192# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 193# Apparently, all nine provinces would go back to UTC-03:00 at the same 194# time in October 17th. 195# 196# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 197# Tierra del Fuego, Tucuman. 198# 199# From Mariano Absatz (2004-06-14): 200# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 201# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 202# annoyance with the change is much higher than the power savings obtained.... 203# 204# From Gwillim Law (2004-06-14): 205# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 206# "The time change in Tierra del Fuego was a conflicted decision from 207# the start. The government had decreed that the measure would take 208# effect on June 1, but a normative error forced the new time to begin 209# three days earlier, from a Saturday to a Sunday.... 210# Our understanding was that the change was originally scheduled to take place 211# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 212# provinces). Sunday was May 30, only two days earlier. So the article 213# contains a contradiction. I would give more credence to the Saturday/Sunday 214# date than the "three days earlier" phrase, and conclude that Tierra del 215# Fuego set its clocks back at 2004-05-30 00:00. 216# 217# From Steffen Thorsen (2004-10-05): 218# The previous law 7210 which changed the province of Mendoza's time zone 219# back in May have been modified slightly in a new law 7277, which set the 220# new end date to 2004-09-26 (original date was 2004-10-17). 221# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 222# 223# From Mariano Absatz (2004-10-05): 224# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 225# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 226# at midnight between Saturday, July 24th and Sunday, July 25th.... 227# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 228# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 229# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 230 231# From Alex Krivenyshev (2008-01-17): 232# Here are articles that Argentina Province San Luis is planning to end DST 233# as earlier as upcoming Monday January 21, 2008 or February 2008: 234# 235# Provincia argentina retrasa reloj y marca diferencia con resto del pais 236# (Argentine Province delayed clock and mark difference with the rest of the 237# country) 238# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 239# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 240# </a> 241# 242# Es inminente que en San Luis atrasen una hora los relojes 243# (It is imminent in San Luis clocks one hour delay) 244# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 245# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 246# </a> 247# 248# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 249# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 250# </a> 251 252# From Jesper Norgaard Welen (2008-01-18): 253# The page of the San Luis provincial government 254# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 255# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 256# </a> 257# confirms what Alex Krivenyshev has earlier sent to the tz 258# emailing list about that San Luis plans to return to standard 259# time much earlier than the rest of the country. It also 260# confirms that upon request the provinces San Juan and Mendoza 261# refused to follow San Luis in this change. 262# 263# The change is supposed to take place Monday the 21.st at 0:00 264# hours. As far as I understand it if this goes ahead, we need 265# a new timezone for San Luis (although there are also documented 266# independent changes in the southamerica file of San Luis in 267# 1990 and 1991 which has not been confirmed). 268 269# From Jesper Norgaard Welen (2008-01-25): 270# Unfortunately the below page has become defunct, about the San Luis 271# time change. Perhaps because it now is part of a group of pages "Most 272# important pages of 2008." 273# 274# You can use 275# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 276# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 277# </a> 278# instead it seems. Or use "Buscador" from the main page of the San Luis 279# government, and fill in "huso" and click OK, and you will get 3 pages 280# from which the first one is identical to the above. 281 282# From Mariano Absatz (2008-01-28): 283# I can confirm that the Province of San Luis (and so far only that 284# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 285# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 286# 1 hour), and they intend to keep UTC-3 as their timezone all year round 287# (that is, unless they change their mind any minute now). 288# 289# So we'll have to add yet another city to 'southamerica' (I think San 290# Luis city is the mos populated city in the Province, so it'd be 291# America/Argentina/San_Luis... of course I can't remember if San Luis's 292# history of particular changes goes along with Mendoza or San Juan :-( 293# (I only remember not being able to collect hard facts about San Luis 294# back in 2004, when these provinces changed to UTC-4 for a few days, I 295# mailed them personally and never got an answer). 296 297# From Paul Eggert (2008-06-30): 298# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 299# from the IATA otherwise. As noted below, Shanks & Pottenger say that 300# America/Cordoba split into 6 subregions during 1991/1992, one of which 301# was America/San_Luis, but we haven't verified this yet so for now we'll 302# keep America/Cordoba a single region rather than splitting it into the 303# other 5 subregions. 304 305# 306# Zone NAME GMTOFF RULES FORMAT [UNTIL] 307# 308# Buenos Aires (BA), Capital Federal (CF), 309Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 310 -4:16:48 - CMT 1920 May # Cordoba Mean Time 311 -4:00 - ART 1930 Dec 312 -4:00 Arg AR%sT 1969 Oct 5 313 -3:00 Arg AR%sT 1999 Oct 3 314 -4:00 Arg AR%sT 2000 Mar 3 315 -3:00 Arg AR%sT 316# 317# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), 318# Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB), 319# La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 320# 321# Shanks & Pottenger also make the following claims, which we haven't verified: 322# - Formosa switched to -3:00 on 1991-01-07. 323# - Misiones switched to -3:00 on 1990-12-29. 324# - Chaco switched to -3:00 on 1991-01-04. 325# - Santiago del Estero switched to -4:00 on 1991-04-01, 326# then to -3:00 on 1991-04-26. 327# 328Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 329 -4:16:48 - CMT 1920 May 330 -4:00 - ART 1930 Dec 331 -4:00 Arg AR%sT 1969 Oct 5 332 -3:00 Arg AR%sT 1991 Mar 3 333 -4:00 - WART 1991 Oct 20 334 -3:00 Arg AR%sT 1999 Oct 3 335 -4:00 Arg AR%sT 2000 Mar 3 336 -3:00 Arg AR%sT 337# 338# Tucuman (TM) 339Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 340 -4:16:48 - CMT 1920 May 341 -4:00 - ART 1930 Dec 342 -4:00 Arg AR%sT 1969 Oct 5 343 -3:00 Arg AR%sT 1991 Mar 3 344 -4:00 - WART 1991 Oct 20 345 -3:00 Arg AR%sT 1999 Oct 3 346 -4:00 Arg AR%sT 2000 Mar 3 347 -3:00 - ART 2004 Jun 1 348 -4:00 - WART 2004 Jun 13 349 -3:00 Arg AR%sT 350# 351# La Rioja (LR) 352Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 353 -4:16:48 - CMT 1920 May 354 -4:00 - ART 1930 Dec 355 -4:00 Arg AR%sT 1969 Oct 5 356 -3:00 Arg AR%sT 1991 Mar 1 357 -4:00 - WART 1991 May 7 358 -3:00 Arg AR%sT 1999 Oct 3 359 -4:00 Arg AR%sT 2000 Mar 3 360 -3:00 - ART 2004 Jun 1 361 -4:00 - WART 2004 Jun 20 362 -3:00 Arg AR%sT 363# 364# San Juan (SJ) 365Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 366 -4:16:48 - CMT 1920 May 367 -4:00 - ART 1930 Dec 368 -4:00 Arg AR%sT 1969 Oct 5 369 -3:00 Arg AR%sT 1991 Mar 1 370 -4:00 - WART 1991 May 7 371 -3:00 Arg AR%sT 1999 Oct 3 372 -4:00 Arg AR%sT 2000 Mar 3 373 -3:00 - ART 2004 May 31 374 -4:00 - WART 2004 Jul 25 375 -3:00 Arg AR%sT 376# 377# Jujuy (JY) 378Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 379 -4:16:48 - CMT 1920 May 380 -4:00 - ART 1930 Dec 381 -4:00 Arg AR%sT 1969 Oct 5 382 -3:00 Arg AR%sT 1990 Mar 4 383 -4:00 - WART 1990 Oct 28 384 -4:00 1:00 WARST 1991 Mar 17 385 -4:00 - WART 1991 Oct 6 386 -3:00 1:00 ARST 1992 387 -3:00 Arg AR%sT 1999 Oct 3 388 -4:00 Arg AR%sT 2000 Mar 3 389 -3:00 Arg AR%sT 390# 391# Catamarca (CT), Chubut (CH) 392Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 393 -4:16:48 - CMT 1920 May 394 -4:00 - ART 1930 Dec 395 -4:00 Arg AR%sT 1969 Oct 5 396 -3:00 Arg AR%sT 1991 Mar 3 397 -4:00 - WART 1991 Oct 20 398 -3:00 Arg AR%sT 1999 Oct 3 399 -4:00 Arg AR%sT 2000 Mar 3 400 -3:00 - ART 2004 Jun 1 401 -4:00 - WART 2004 Jun 20 402 -3:00 Arg AR%sT 403# 404# Mendoza (MZ) 405Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 406 -4:16:48 - CMT 1920 May 407 -4:00 - ART 1930 Dec 408 -4:00 Arg AR%sT 1969 Oct 5 409 -3:00 Arg AR%sT 1990 Mar 4 410 -4:00 - WART 1990 Oct 15 411 -4:00 1:00 WARST 1991 Mar 1 412 -4:00 - WART 1991 Oct 15 413 -4:00 1:00 WARST 1992 Mar 1 414 -4:00 - WART 1992 Oct 18 415 -3:00 Arg AR%sT 1999 Oct 3 416 -4:00 Arg AR%sT 2000 Mar 3 417 -3:00 - ART 2004 May 23 418 -4:00 - WART 2004 Sep 26 419 -3:00 Arg AR%sT 420# 421# San Luis (SL) 422Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 423 -4:16:48 - CMT 1920 May 424 -4:00 - ART 1930 Dec 425 -4:00 Arg AR%sT 1969 Oct 5 426 -3:00 Arg AR%sT 1990 427 -3:00 1:00 ARST 1990 Mar 14 428 -4:00 - WART 1990 Oct 15 429 -4:00 1:00 WARST 1991 Mar 1 430 -4:00 - WART 1991 Jun 1 431 -3:00 - ART 1999 Oct 3 432 -4:00 1:00 WARST 2000 Mar 3 433 -3:00 - ART 2004 May 31 434 -4:00 - WART 2004 Jul 25 435 -3:00 Arg AR%sT 2008 Jan 21 436 -3:00 - ART 437# 438# Santa Cruz (SC) 439Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 440 -4:16:48 - CMT 1920 May # Cordoba Mean Time 441 -4:00 - ART 1930 Dec 442 -4:00 Arg AR%sT 1969 Oct 5 443 -3:00 Arg AR%sT 1999 Oct 3 444 -4:00 Arg AR%sT 2000 Mar 3 445 -3:00 - ART 2004 Jun 1 446 -4:00 - WART 2004 Jun 20 447 -3:00 Arg AR%sT 448# 449# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 450Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 451 -4:16:48 - CMT 1920 May # Cordoba Mean Time 452 -4:00 - ART 1930 Dec 453 -4:00 Arg AR%sT 1969 Oct 5 454 -3:00 Arg AR%sT 1999 Oct 3 455 -4:00 Arg AR%sT 2000 Mar 3 456 -3:00 - ART 2004 May 30 457 -4:00 - WART 2004 Jun 20 458 -3:00 Arg AR%sT 459 460# Aruba 461# Zone NAME GMTOFF RULES FORMAT [UNTIL] 462Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 463 -4:30 - ANT 1965 # Netherlands Antilles Time 464 -4:00 - AST 465 466# Bolivia 467# Zone NAME GMTOFF RULES FORMAT [UNTIL] 468Zone America/La_Paz -4:32:36 - LMT 1890 469 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 470 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 471 -4:00 - BOT # Bolivia Time 472 473# Brazil 474 475# From Paul Eggert (1993-11-18): 476# The mayor of Rio recently attempted to change the time zone rules 477# just in his city, in order to leave more summer time for the tourist trade. 478# The rule change lasted only part of the day; 479# the federal government refused to follow the city's rules, and business 480# was in a chaos, so the mayor backed down that afternoon. 481 482# From IATA SSIM (1996-02): 483# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 484# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 485# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 486# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 487# [The last three states are new to this issue of the IATA SSIM.] 488 489# From Gwillim Law (1996-10-07): 490# Geography, history (Tocantins was part of Goias until 1989), and other 491# sources of time zone information lead me to believe that AL, SE, and TO were 492# always in BR1, and so the only change was whether or not they observed DST.... 493# The earliest issue of the SSIM I have is 2/91. Each issue from then until 494# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 495# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 496# (UTC-4).... The other two time zones given for Brazil are BR3, which is 497# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 498# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 499# become part of the state of Pernambuco). The boundary between BR1 and BR2 500# has never been clearly stated. They've simply been called East and West. 501# However, some conclusions can be drawn from another IATA manual: the Airline 502# Coding Directory, which lists close to 400 airports in Brazil. For each 503# airport it gives a time zone which is coded to the SSIM. From that 504# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 505# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 506# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 507 508# From Marcos Tadeu (1998-09-27): 509# <a href="http://pcdsh01.on.br/verao1.html"> 510# Brazilian official page 511# </a> 512 513# From Jesper Norgaard (2000-11-03): 514# [For an official list of which regions in Brazil use which time zones, see:] 515# http://pcdsh01.on.br/Fusbr.htm 516# http://pcdsh01.on.br/Fusbrhv.htm 517 518# From Celso Doria via David Madeo (2002-10-09): 519# The reason for the delay this year has to do with elections in Brazil. 520# 521# Unlike in the United States, elections in Brazil are 100% computerized and 522# the results are known almost immediately. Yesterday, it was the first 523# round of the elections when 115 million Brazilians voted for President, 524# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 525# counting (or re-counting) votes anymore and we know there will be a second 526# round for the Presidency and also for some Governors. The 2nd round will 527# take place on October 27th. 528# 529# The reason why the DST will only begin November 3rd is that the thousands 530# of electoral machines used cannot have their time changed, and since the 531# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 532# the Government decided to postpone DST, instead of changing the Constitution 533# (maybe, for the next elections, it will be possible to change the clock)... 534 535# From Rodrigo Severo (2004-10-04): 536# It's just the biannual change made necessary by the much hyped, supposedly 537# modern Brazilian eletronic voting machines which, apparently, can't deal 538# with a time change between the first and the second rounds of the elections. 539 540# From Steffen Thorsen (2007-09-20): 541# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 542# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 543 544# From Paul Schulze (2008-06-24): 545# ...by law number 11.662 of April 24, 2008 (published in the "Diario 546# Oficial da Uniao"...) in Brazil there are changes in the timezones, 547# effective today (00:00am at June 24, 2008) as follows: 548# 549# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 550# part of the Amazonas state that had this timezone now being put to the 551# timezone UTC+4 552# b) The whole Para state now is put at timezone UTC+3, instead of just 553# part of it, as was before. 554# 555# This change follows a proposal of senator Tiao Viana of Acre state, that 556# proposed it due to concerns about open television channels displaying 557# programs inappropriate to youths in the states that had the timezone 558# UTC+5 too early in the night. In the occasion, some more corrections 559# were proposed, trying to unify the timezones of any given state. This 560# change modifies timezone rules defined in decree 2.784 of 18 June, 561# 1913. 562 563# From Rodrigo Severo (2008-06-24): 564# Just correcting the URL: 565# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008"> 566# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008 567# </a> 568# 569# As a result of the above Decree I believe the America/Rio_Branco 570# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 571# be created to represent the the west side of the Para State. I 572# suggest this new timezone be called Santarem as the most 573# important/populated city in the affected area. 574# 575# This new timezone would be the same as the Rio_Branco timezone up to 576# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 577 578# From Alex Krivenyshev (2008-06-24): 579# This is a quick reference page for New and Old Brazil Time Zones map. 580# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 581# http://www.worldtimezone.com/brazil-time-new-old.php 582# </a> 583# 584# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 585# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 586# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 587 588# From Paul Eggert (2002-10-10): 589# The official decrees referenced below are mostly taken from 590# <a href="http://pcdsh01.on.br/DecHV.html"> 591# Decretos sobre o Horario de Verao no Brasil 592# </a>. 593
| 183 184# From Mariano Absatz (2004-05-21): 185# Today it was officially published that the Province of Mendoza is changing 186# its timezone this winter... starting tomorrow night.... 187# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 188# From Paul Eggert (2004-05-24): 189# It's Law No. 7,210. This change is due to a public power emergency, so for 190# now we'll assume it's for this year only. 191# 192# From Paul Eggert (2006-03-22): 193# <a href="http://www.spicasc.net/horvera.html"> 194# Hora de verano para la Republica Argentina (2003-06-08) 195# </a> says that standard time in Argentina from 1894-10-31 196# to 1920-05-01 was -4:16:48.25. Go with this more-precise value 197# over Shanks & Pottenger. 198# 199# From Mariano Absatz (2004-06-05): 200# These media articles from a major newspaper mostly cover the current state: 201# http://www.lanacion.com.ar/04/05/27/de_604825.asp 202# http://www.lanacion.com.ar/04/05/28/de_605203.asp 203# 204# The following eight (8) provinces pulled clocks back to UTC-04:00 at 205# midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 206# Apparently, all nine provinces would go back to UTC-03:00 at the same 207# time in October 17th. 208# 209# Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 210# Tierra del Fuego, Tucuman. 211# 212# From Mariano Absatz (2004-06-14): 213# ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 214# yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 215# annoyance with the change is much higher than the power savings obtained.... 216# 217# From Gwillim Law (2004-06-14): 218# http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 219# "The time change in Tierra del Fuego was a conflicted decision from 220# the start. The government had decreed that the measure would take 221# effect on June 1, but a normative error forced the new time to begin 222# three days earlier, from a Saturday to a Sunday.... 223# Our understanding was that the change was originally scheduled to take place 224# on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 225# provinces). Sunday was May 30, only two days earlier. So the article 226# contains a contradiction. I would give more credence to the Saturday/Sunday 227# date than the "three days earlier" phrase, and conclude that Tierra del 228# Fuego set its clocks back at 2004-05-30 00:00. 229# 230# From Steffen Thorsen (2004-10-05): 231# The previous law 7210 which changed the province of Mendoza's time zone 232# back in May have been modified slightly in a new law 7277, which set the 233# new end date to 2004-09-26 (original date was 2004-10-17). 234# http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 235# 236# From Mariano Absatz (2004-10-05): 237# San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 238# Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 239# at midnight between Saturday, July 24th and Sunday, July 25th.... 240# http://www.sanjuan.gov.ar/prensa/archivo/000329.html 241# http://www.sanjuan.gov.ar/prensa/archivo/000426.html 242# http://www.sanjuan.gov.ar/prensa/archivo/000441.html 243 244# From Alex Krivenyshev (2008-01-17): 245# Here are articles that Argentina Province San Luis is planning to end DST 246# as earlier as upcoming Monday January 21, 2008 or February 2008: 247# 248# Provincia argentina retrasa reloj y marca diferencia con resto del pais 249# (Argentine Province delayed clock and mark difference with the rest of the 250# country) 251# <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 252# http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 253# </a> 254# 255# Es inminente que en San Luis atrasen una hora los relojes 256# (It is imminent in San Luis clocks one hour delay) 257# <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 258# http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 259# </a> 260# 261# <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 262# http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 263# </a> 264 265# From Jesper Norgaard Welen (2008-01-18): 266# The page of the San Luis provincial government 267# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 268# http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 269# </a> 270# confirms what Alex Krivenyshev has earlier sent to the tz 271# emailing list about that San Luis plans to return to standard 272# time much earlier than the rest of the country. It also 273# confirms that upon request the provinces San Juan and Mendoza 274# refused to follow San Luis in this change. 275# 276# The change is supposed to take place Monday the 21.st at 0:00 277# hours. As far as I understand it if this goes ahead, we need 278# a new timezone for San Luis (although there are also documented 279# independent changes in the southamerica file of San Luis in 280# 1990 and 1991 which has not been confirmed). 281 282# From Jesper Norgaard Welen (2008-01-25): 283# Unfortunately the below page has become defunct, about the San Luis 284# time change. Perhaps because it now is part of a group of pages "Most 285# important pages of 2008." 286# 287# You can use 288# <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 289# http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 290# </a> 291# instead it seems. Or use "Buscador" from the main page of the San Luis 292# government, and fill in "huso" and click OK, and you will get 3 pages 293# from which the first one is identical to the above. 294 295# From Mariano Absatz (2008-01-28): 296# I can confirm that the Province of San Luis (and so far only that 297# province) decided to go back to UTC-3 effective midnight Jan 20th 2008 298# (that is, Monday 21st at 0:00 is the time the clocks were delayed back 299# 1 hour), and they intend to keep UTC-3 as their timezone all year round 300# (that is, unless they change their mind any minute now). 301# 302# So we'll have to add yet another city to 'southamerica' (I think San 303# Luis city is the mos populated city in the Province, so it'd be 304# America/Argentina/San_Luis... of course I can't remember if San Luis's 305# history of particular changes goes along with Mendoza or San Juan :-( 306# (I only remember not being able to collect hard facts about San Luis 307# back in 2004, when these provinces changed to UTC-4 for a few days, I 308# mailed them personally and never got an answer). 309 310# From Paul Eggert (2008-06-30): 311# Unless otherwise specified, data are from Shanks & Pottenger through 1992, 312# from the IATA otherwise. As noted below, Shanks & Pottenger say that 313# America/Cordoba split into 6 subregions during 1991/1992, one of which 314# was America/San_Luis, but we haven't verified this yet so for now we'll 315# keep America/Cordoba a single region rather than splitting it into the 316# other 5 subregions. 317 318# 319# Zone NAME GMTOFF RULES FORMAT [UNTIL] 320# 321# Buenos Aires (BA), Capital Federal (CF), 322Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 323 -4:16:48 - CMT 1920 May # Cordoba Mean Time 324 -4:00 - ART 1930 Dec 325 -4:00 Arg AR%sT 1969 Oct 5 326 -3:00 Arg AR%sT 1999 Oct 3 327 -4:00 Arg AR%sT 2000 Mar 3 328 -3:00 Arg AR%sT 329# 330# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), 331# Formosa (FM), Salta (SA), Santiago del Estero (SE), Cordoba (CB), 332# La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 333# 334# Shanks & Pottenger also make the following claims, which we haven't verified: 335# - Formosa switched to -3:00 on 1991-01-07. 336# - Misiones switched to -3:00 on 1990-12-29. 337# - Chaco switched to -3:00 on 1991-01-04. 338# - Santiago del Estero switched to -4:00 on 1991-04-01, 339# then to -3:00 on 1991-04-26. 340# 341Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 342 -4:16:48 - CMT 1920 May 343 -4:00 - ART 1930 Dec 344 -4:00 Arg AR%sT 1969 Oct 5 345 -3:00 Arg AR%sT 1991 Mar 3 346 -4:00 - WART 1991 Oct 20 347 -3:00 Arg AR%sT 1999 Oct 3 348 -4:00 Arg AR%sT 2000 Mar 3 349 -3:00 Arg AR%sT 350# 351# Tucuman (TM) 352Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 353 -4:16:48 - CMT 1920 May 354 -4:00 - ART 1930 Dec 355 -4:00 Arg AR%sT 1969 Oct 5 356 -3:00 Arg AR%sT 1991 Mar 3 357 -4:00 - WART 1991 Oct 20 358 -3:00 Arg AR%sT 1999 Oct 3 359 -4:00 Arg AR%sT 2000 Mar 3 360 -3:00 - ART 2004 Jun 1 361 -4:00 - WART 2004 Jun 13 362 -3:00 Arg AR%sT 363# 364# La Rioja (LR) 365Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 366 -4:16:48 - CMT 1920 May 367 -4:00 - ART 1930 Dec 368 -4:00 Arg AR%sT 1969 Oct 5 369 -3:00 Arg AR%sT 1991 Mar 1 370 -4:00 - WART 1991 May 7 371 -3:00 Arg AR%sT 1999 Oct 3 372 -4:00 Arg AR%sT 2000 Mar 3 373 -3:00 - ART 2004 Jun 1 374 -4:00 - WART 2004 Jun 20 375 -3:00 Arg AR%sT 376# 377# San Juan (SJ) 378Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 379 -4:16:48 - CMT 1920 May 380 -4:00 - ART 1930 Dec 381 -4:00 Arg AR%sT 1969 Oct 5 382 -3:00 Arg AR%sT 1991 Mar 1 383 -4:00 - WART 1991 May 7 384 -3:00 Arg AR%sT 1999 Oct 3 385 -4:00 Arg AR%sT 2000 Mar 3 386 -3:00 - ART 2004 May 31 387 -4:00 - WART 2004 Jul 25 388 -3:00 Arg AR%sT 389# 390# Jujuy (JY) 391Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 392 -4:16:48 - CMT 1920 May 393 -4:00 - ART 1930 Dec 394 -4:00 Arg AR%sT 1969 Oct 5 395 -3:00 Arg AR%sT 1990 Mar 4 396 -4:00 - WART 1990 Oct 28 397 -4:00 1:00 WARST 1991 Mar 17 398 -4:00 - WART 1991 Oct 6 399 -3:00 1:00 ARST 1992 400 -3:00 Arg AR%sT 1999 Oct 3 401 -4:00 Arg AR%sT 2000 Mar 3 402 -3:00 Arg AR%sT 403# 404# Catamarca (CT), Chubut (CH) 405Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 406 -4:16:48 - CMT 1920 May 407 -4:00 - ART 1930 Dec 408 -4:00 Arg AR%sT 1969 Oct 5 409 -3:00 Arg AR%sT 1991 Mar 3 410 -4:00 - WART 1991 Oct 20 411 -3:00 Arg AR%sT 1999 Oct 3 412 -4:00 Arg AR%sT 2000 Mar 3 413 -3:00 - ART 2004 Jun 1 414 -4:00 - WART 2004 Jun 20 415 -3:00 Arg AR%sT 416# 417# Mendoza (MZ) 418Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 419 -4:16:48 - CMT 1920 May 420 -4:00 - ART 1930 Dec 421 -4:00 Arg AR%sT 1969 Oct 5 422 -3:00 Arg AR%sT 1990 Mar 4 423 -4:00 - WART 1990 Oct 15 424 -4:00 1:00 WARST 1991 Mar 1 425 -4:00 - WART 1991 Oct 15 426 -4:00 1:00 WARST 1992 Mar 1 427 -4:00 - WART 1992 Oct 18 428 -3:00 Arg AR%sT 1999 Oct 3 429 -4:00 Arg AR%sT 2000 Mar 3 430 -3:00 - ART 2004 May 23 431 -4:00 - WART 2004 Sep 26 432 -3:00 Arg AR%sT 433# 434# San Luis (SL) 435Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 436 -4:16:48 - CMT 1920 May 437 -4:00 - ART 1930 Dec 438 -4:00 Arg AR%sT 1969 Oct 5 439 -3:00 Arg AR%sT 1990 440 -3:00 1:00 ARST 1990 Mar 14 441 -4:00 - WART 1990 Oct 15 442 -4:00 1:00 WARST 1991 Mar 1 443 -4:00 - WART 1991 Jun 1 444 -3:00 - ART 1999 Oct 3 445 -4:00 1:00 WARST 2000 Mar 3 446 -3:00 - ART 2004 May 31 447 -4:00 - WART 2004 Jul 25 448 -3:00 Arg AR%sT 2008 Jan 21 449 -3:00 - ART 450# 451# Santa Cruz (SC) 452Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 453 -4:16:48 - CMT 1920 May # Cordoba Mean Time 454 -4:00 - ART 1930 Dec 455 -4:00 Arg AR%sT 1969 Oct 5 456 -3:00 Arg AR%sT 1999 Oct 3 457 -4:00 Arg AR%sT 2000 Mar 3 458 -3:00 - ART 2004 Jun 1 459 -4:00 - WART 2004 Jun 20 460 -3:00 Arg AR%sT 461# 462# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 463Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 464 -4:16:48 - CMT 1920 May # Cordoba Mean Time 465 -4:00 - ART 1930 Dec 466 -4:00 Arg AR%sT 1969 Oct 5 467 -3:00 Arg AR%sT 1999 Oct 3 468 -4:00 Arg AR%sT 2000 Mar 3 469 -3:00 - ART 2004 May 30 470 -4:00 - WART 2004 Jun 20 471 -3:00 Arg AR%sT 472 473# Aruba 474# Zone NAME GMTOFF RULES FORMAT [UNTIL] 475Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 476 -4:30 - ANT 1965 # Netherlands Antilles Time 477 -4:00 - AST 478 479# Bolivia 480# Zone NAME GMTOFF RULES FORMAT [UNTIL] 481Zone America/La_Paz -4:32:36 - LMT 1890 482 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 483 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 484 -4:00 - BOT # Bolivia Time 485 486# Brazil 487 488# From Paul Eggert (1993-11-18): 489# The mayor of Rio recently attempted to change the time zone rules 490# just in his city, in order to leave more summer time for the tourist trade. 491# The rule change lasted only part of the day; 492# the federal government refused to follow the city's rules, and business 493# was in a chaos, so the mayor backed down that afternoon. 494 495# From IATA SSIM (1996-02): 496# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 497# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 498# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 499# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 500# [The last three states are new to this issue of the IATA SSIM.] 501 502# From Gwillim Law (1996-10-07): 503# Geography, history (Tocantins was part of Goias until 1989), and other 504# sources of time zone information lead me to believe that AL, SE, and TO were 505# always in BR1, and so the only change was whether or not they observed DST.... 506# The earliest issue of the SSIM I have is 2/91. Each issue from then until 507# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 508# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 509# (UTC-4).... The other two time zones given for Brazil are BR3, which is 510# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 511# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 512# become part of the state of Pernambuco). The boundary between BR1 and BR2 513# has never been clearly stated. They've simply been called East and West. 514# However, some conclusions can be drawn from another IATA manual: the Airline 515# Coding Directory, which lists close to 400 airports in Brazil. For each 516# airport it gives a time zone which is coded to the SSIM. From that 517# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 518# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 519# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 520 521# From Marcos Tadeu (1998-09-27): 522# <a href="http://pcdsh01.on.br/verao1.html"> 523# Brazilian official page 524# </a> 525 526# From Jesper Norgaard (2000-11-03): 527# [For an official list of which regions in Brazil use which time zones, see:] 528# http://pcdsh01.on.br/Fusbr.htm 529# http://pcdsh01.on.br/Fusbrhv.htm 530 531# From Celso Doria via David Madeo (2002-10-09): 532# The reason for the delay this year has to do with elections in Brazil. 533# 534# Unlike in the United States, elections in Brazil are 100% computerized and 535# the results are known almost immediately. Yesterday, it was the first 536# round of the elections when 115 million Brazilians voted for President, 537# Governor, Senators, Federal Deputies, and State Deputies. Nobody is 538# counting (or re-counting) votes anymore and we know there will be a second 539# round for the Presidency and also for some Governors. The 2nd round will 540# take place on October 27th. 541# 542# The reason why the DST will only begin November 3rd is that the thousands 543# of electoral machines used cannot have their time changed, and since the 544# Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 545# the Government decided to postpone DST, instead of changing the Constitution 546# (maybe, for the next elections, it will be possible to change the clock)... 547 548# From Rodrigo Severo (2004-10-04): 549# It's just the biannual change made necessary by the much hyped, supposedly 550# modern Brazilian eletronic voting machines which, apparently, can't deal 551# with a time change between the first and the second rounds of the elections. 552 553# From Steffen Thorsen (2007-09-20): 554# Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 555# http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 556 557# From Paul Schulze (2008-06-24): 558# ...by law number 11.662 of April 24, 2008 (published in the "Diario 559# Oficial da Uniao"...) in Brazil there are changes in the timezones, 560# effective today (00:00am at June 24, 2008) as follows: 561# 562# a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 563# part of the Amazonas state that had this timezone now being put to the 564# timezone UTC+4 565# b) The whole Para state now is put at timezone UTC+3, instead of just 566# part of it, as was before. 567# 568# This change follows a proposal of senator Tiao Viana of Acre state, that 569# proposed it due to concerns about open television channels displaying 570# programs inappropriate to youths in the states that had the timezone 571# UTC+5 too early in the night. In the occasion, some more corrections 572# were proposed, trying to unify the timezones of any given state. This 573# change modifies timezone rules defined in decree 2.784 of 18 June, 574# 1913. 575 576# From Rodrigo Severo (2008-06-24): 577# Just correcting the URL: 578# <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008"> 579# https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=3Ddo&secao=3D1&pagina=3D1&data=3D25/04/2008 580# </a> 581# 582# As a result of the above Decree I believe the America/Rio_Branco 583# timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 584# be created to represent the the west side of the Para State. I 585# suggest this new timezone be called Santarem as the most 586# important/populated city in the affected area. 587# 588# This new timezone would be the same as the Rio_Branco timezone up to 589# the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 590 591# From Alex Krivenyshev (2008-06-24): 592# This is a quick reference page for New and Old Brazil Time Zones map. 593# <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 594# http://www.worldtimezone.com/brazil-time-new-old.php 595# </a> 596# 597# - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 598# (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 599# part of Par state is moving to one timezone UTC- 03 (from UTC -04). 600 601# From Paul Eggert (2002-10-10): 602# The official decrees referenced below are mostly taken from 603# <a href="http://pcdsh01.on.br/DecHV.html"> 604# Decretos sobre o Horario de Verao no Brasil 605# </a>. 606
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| 607# From Steffen Thorsen (2008-08-29): 608# As announced by the government and many newspapers in Brazil late 609# yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 610# it will end on 2009-02-15 (current rule for Brazil is fine). Based on 611# past years experience with the elections, there was a good chance that 612# the start was postponed to November, but it did not happen this year. 613# 614# It has not yet been posted to http://pcdsh01.on.br/DecHV.html 615# 616# An official page about it: 617# <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 618# http://www.mme.gov.br/site/news/detail.do?newsId=16722 619# </a> 620# Note that this link does not always work directly, but must be accessed 621# by going to 622# <a href="http://www.mme.gov.br/first>" 623# http://www.mme.gov.br/first 624# </a> 625# 626# One example link that works directly: 627# <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 628# http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 629# (Portuguese) 630# </a> 631# 632# We have a written a short article about it as well: 633# <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 634# http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 635# </a> 636
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594# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 595# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 596# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 597Rule Brazil 1931 only - Oct 3 11:00 1:00 S 598Rule Brazil 1932 1933 - Apr 1 0:00 0 - 599Rule Brazil 1932 only - Oct 3 0:00 1:00 S 600# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 601# revoked DST. 602# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 603# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 604Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 605Rule Brazil 1950 only - Apr 16 1:00 0 - 606Rule Brazil 1951 1952 - Apr 1 0:00 0 - 607# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 608Rule Brazil 1953 only - Mar 1 0:00 0 - 609# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 610# revoked DST. 611# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 612# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 613# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 614# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 615# extended the above decree to all of the national territory on 12-09. 616Rule Brazil 1963 only - Dec 9 0:00 1:00 S 617# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 618# extended summer time by one day to 1964-03-01 00:00 (start of school). 619Rule Brazil 1964 only - Mar 1 0:00 0 - 620# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 621Rule Brazil 1965 only - Jan 31 0:00 1:00 S 622Rule Brazil 1965 only - Mar 31 0:00 0 - 623# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 624Rule Brazil 1965 only - Dec 1 0:00 1:00 S 625# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 626Rule Brazil 1966 1968 - Mar 1 0:00 0 - 627Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 628# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 629# revoked DST. 630# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 631Rule Brazil 1985 only - Nov 2 0:00 1:00 S 632# Decree 92,310 (1986-01-21) 633# Decree 92,463 (1986-03-13) 634Rule Brazil 1986 only - Mar 15 0:00 0 - 635# Decree 93,316 (1986-10-01) 636Rule Brazil 1986 only - Oct 25 0:00 1:00 S 637Rule Brazil 1987 only - Feb 14 0:00 0 - 638# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 639Rule Brazil 1987 only - Oct 25 0:00 1:00 S 640Rule Brazil 1988 only - Feb 7 0:00 0 - 641# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 642# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 643Rule Brazil 1988 only - Oct 16 0:00 1:00 S 644Rule Brazil 1989 only - Jan 29 0:00 0 - 645# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 646# with the same exceptions 647Rule Brazil 1989 only - Oct 15 0:00 1:00 S 648Rule Brazil 1990 only - Feb 11 0:00 0 - 649# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 650# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 651# Decree 99,629 (1990-10-19) adds BA, MT. 652Rule Brazil 1990 only - Oct 21 0:00 1:00 S 653Rule Brazil 1991 only - Feb 17 0:00 0 - 654# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 655# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 656Rule Brazil 1991 only - Oct 20 0:00 1:00 S 657Rule Brazil 1992 only - Feb 9 0:00 0 - 658# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 659# adopted by same states. 660Rule Brazil 1992 only - Oct 25 0:00 1:00 S 661Rule Brazil 1993 only - Jan 31 0:00 0 - 662# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 663# adopted by same states, plus AM. 664# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 665# web page corrected 2004-01-07) adopted by same states, minus AM. 666# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 667# adopted by same states, plus MT and TO. 668# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 669# adds AL, SE. 670Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 671Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 672Rule Brazil 1996 only - Feb 11 0:00 0 - 673# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 674# adopted by same states, minus AL, SE. 675Rule Brazil 1996 only - Oct 6 0:00 1:00 S 676Rule Brazil 1997 only - Feb 16 0:00 0 - 677# From Daniel C. Sobral (1998-02-12): 678# In 1997, the DS began on October 6. The stated reason was that 679# because international television networks ignored Brazil's policy on DS, 680# they bought the wrong times on satellite for coverage of Pope's visit. 681# This year, the ending date of DS was postponed to March 1 682# to help dealing with the shortages of electric power. 683# 684# Decree 2,317 (1997-09-04), adopted by same states. 685Rule Brazil 1997 only - Oct 6 0:00 1:00 S 686# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 687# (1998-02-10) 688Rule Brazil 1998 only - Mar 1 0:00 0 - 689# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 690# adopted by the same states as before. 691Rule Brazil 1998 only - Oct 11 0:00 1:00 S 692Rule Brazil 1999 only - Feb 21 0:00 0 - 693# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 694# (1999-08-23) adopted by same states. 695# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 696# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 697Rule Brazil 1999 only - Oct 3 0:00 1:00 S 698Rule Brazil 2000 only - Feb 27 0:00 0 - 699# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 700# adopted by the same states as before. 701# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 702# repeals DST in PE and RR, effective 2000-10-15 00:00. 703# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 704# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 705# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 706# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 707Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 708Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 709# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 710# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 711Rule Brazil 2002 only - Nov 3 0:00 1:00 S 712# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 713# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 714Rule Brazil 2003 only - Oct 19 0:00 1:00 S 715# Decree 5,223 (2004-10-01) reestablishes DST in MT. 716# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 717Rule Brazil 2004 only - Nov 2 0:00 1:00 S 718# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 719# adopted by the same states as before. 720Rule Brazil 2005 only - Oct 16 0:00 1:00 S 721# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 722# adopted by the same states as before. 723Rule Brazil 2006 only - Nov 5 0:00 1:00 S 724Rule Brazil 2007 only - Feb 25 0:00 0 - 725# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 726# adopted by the same states as before.
| 637# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 638# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 639# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 640Rule Brazil 1931 only - Oct 3 11:00 1:00 S 641Rule Brazil 1932 1933 - Apr 1 0:00 0 - 642Rule Brazil 1932 only - Oct 3 0:00 1:00 S 643# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 644# revoked DST. 645# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 646# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 647Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 648Rule Brazil 1950 only - Apr 16 1:00 0 - 649Rule Brazil 1951 1952 - Apr 1 0:00 0 - 650# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 651Rule Brazil 1953 only - Mar 1 0:00 0 - 652# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 653# revoked DST. 654# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 655# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 656# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 657# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 658# extended the above decree to all of the national territory on 12-09. 659Rule Brazil 1963 only - Dec 9 0:00 1:00 S 660# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 661# extended summer time by one day to 1964-03-01 00:00 (start of school). 662Rule Brazil 1964 only - Mar 1 0:00 0 - 663# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 664Rule Brazil 1965 only - Jan 31 0:00 1:00 S 665Rule Brazil 1965 only - Mar 31 0:00 0 - 666# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 667Rule Brazil 1965 only - Dec 1 0:00 1:00 S 668# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 669Rule Brazil 1966 1968 - Mar 1 0:00 0 - 670Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 671# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 672# revoked DST. 673# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 674Rule Brazil 1985 only - Nov 2 0:00 1:00 S 675# Decree 92,310 (1986-01-21) 676# Decree 92,463 (1986-03-13) 677Rule Brazil 1986 only - Mar 15 0:00 0 - 678# Decree 93,316 (1986-10-01) 679Rule Brazil 1986 only - Oct 25 0:00 1:00 S 680Rule Brazil 1987 only - Feb 14 0:00 0 - 681# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 682Rule Brazil 1987 only - Oct 25 0:00 1:00 S 683Rule Brazil 1988 only - Feb 7 0:00 0 - 684# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 685# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 686Rule Brazil 1988 only - Oct 16 0:00 1:00 S 687Rule Brazil 1989 only - Jan 29 0:00 0 - 688# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 689# with the same exceptions 690Rule Brazil 1989 only - Oct 15 0:00 1:00 S 691Rule Brazil 1990 only - Feb 11 0:00 0 - 692# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 693# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 694# Decree 99,629 (1990-10-19) adds BA, MT. 695Rule Brazil 1990 only - Oct 21 0:00 1:00 S 696Rule Brazil 1991 only - Feb 17 0:00 0 - 697# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 698# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 699Rule Brazil 1991 only - Oct 20 0:00 1:00 S 700Rule Brazil 1992 only - Feb 9 0:00 0 - 701# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 702# adopted by same states. 703Rule Brazil 1992 only - Oct 25 0:00 1:00 S 704Rule Brazil 1993 only - Jan 31 0:00 0 - 705# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 706# adopted by same states, plus AM. 707# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 708# web page corrected 2004-01-07) adopted by same states, minus AM. 709# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 710# adopted by same states, plus MT and TO. 711# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 712# adds AL, SE. 713Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 714Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 715Rule Brazil 1996 only - Feb 11 0:00 0 - 716# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 717# adopted by same states, minus AL, SE. 718Rule Brazil 1996 only - Oct 6 0:00 1:00 S 719Rule Brazil 1997 only - Feb 16 0:00 0 - 720# From Daniel C. Sobral (1998-02-12): 721# In 1997, the DS began on October 6. The stated reason was that 722# because international television networks ignored Brazil's policy on DS, 723# they bought the wrong times on satellite for coverage of Pope's visit. 724# This year, the ending date of DS was postponed to March 1 725# to help dealing with the shortages of electric power. 726# 727# Decree 2,317 (1997-09-04), adopted by same states. 728Rule Brazil 1997 only - Oct 6 0:00 1:00 S 729# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 730# (1998-02-10) 731Rule Brazil 1998 only - Mar 1 0:00 0 - 732# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 733# adopted by the same states as before. 734Rule Brazil 1998 only - Oct 11 0:00 1:00 S 735Rule Brazil 1999 only - Feb 21 0:00 0 - 736# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 737# (1999-08-23) adopted by same states. 738# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 739# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 740Rule Brazil 1999 only - Oct 3 0:00 1:00 S 741Rule Brazil 2000 only - Feb 27 0:00 0 - 742# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 743# adopted by the same states as before. 744# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 745# repeals DST in PE and RR, effective 2000-10-15 00:00. 746# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 747# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 748# Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 749# (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 750Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 751Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 752# Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 753# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 754Rule Brazil 2002 only - Nov 3 0:00 1:00 S 755# Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 756# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 757Rule Brazil 2003 only - Oct 19 0:00 1:00 S 758# Decree 5,223 (2004-10-01) reestablishes DST in MT. 759# <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 760Rule Brazil 2004 only - Nov 2 0:00 1:00 S 761# Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 762# adopted by the same states as before. 763Rule Brazil 2005 only - Oct 16 0:00 1:00 S 764# Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 765# adopted by the same states as before. 766Rule Brazil 2006 only - Nov 5 0:00 1:00 S 767Rule Brazil 2007 only - Feb 25 0:00 0 - 768# Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 769# adopted by the same states as before.
|
727Rule Brazil 2007 max - Oct Sun>=8 0:00 1:00 S
| 770Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S
|
728Rule Brazil 2008 max - Feb Sun>=15 0:00 0 -
| 771Rule Brazil 2008 max - Feb Sun>=15 0:00 0 -
|
| 772Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S
|
729# The latest ruleset listed above says that the following states observe DST: 730# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 731# For dates after mid-2008, the above rules with TO="max" are guesses 732# and are quite possibly wrong, but are more likely than no DST at all. 733 734# Zone NAME GMTOFF RULES FORMAT [UNTIL] 735# 736# Fernando de Noronha (administratively part of PE) 737Zone America/Noronha -2:09:40 - LMT 1914 738 -2:00 Brazil FN%sT 1990 Sep 17 739 -2:00 - FNT 1999 Sep 30 740 -2:00 Brazil FN%sT 2000 Oct 15 741 -2:00 - FNT 2001 Sep 13 742 -2:00 Brazil FN%sT 2002 Oct 1 743 -2:00 - FNT 744# Other Atlantic islands have no permanent settlement. 745# These include Trindade and Martin Vaz (administratively part of ES), 746# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 747# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 748# it also included the Penedos. 749# 750# Amapa (AP), east Para (PA) 751# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 752# The division between east and west Para is the river Xingu. 753# In the north a very small part from the river Javary (now Jari I guess, 754# the border with Amapa) to the Amazon, then to the Xingu. 755Zone America/Belem -3:13:56 - LMT 1914 756 -3:00 Brazil BR%sT 1988 Sep 12 757 -3:00 - BRT 758# 759# west Para (PA) 760# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 761Zone America/Santarem -3:38:48 - LMT 1914 762 -4:00 Brazil AM%sT 1988 Sep 12 763 -4:00 - AMT 2008 Jun 24 00:00 764 -3:00 - BRT 765# 766# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 767# Paraiba (PB) 768Zone America/Fortaleza -2:34:00 - LMT 1914 769 -3:00 Brazil BR%sT 1990 Sep 17 770 -3:00 - BRT 1999 Sep 30 771 -3:00 Brazil BR%sT 2000 Oct 22 772 -3:00 - BRT 2001 Sep 13 773 -3:00 Brazil BR%sT 2002 Oct 1 774 -3:00 - BRT 775# 776# Pernambuco (PE) (except Atlantic islands) 777Zone America/Recife -2:19:36 - LMT 1914 778 -3:00 Brazil BR%sT 1990 Sep 17 779 -3:00 - BRT 1999 Sep 30 780 -3:00 Brazil BR%sT 2000 Oct 15 781 -3:00 - BRT 2001 Sep 13 782 -3:00 Brazil BR%sT 2002 Oct 1 783 -3:00 - BRT 784# 785# Tocantins (TO) 786Zone America/Araguaina -3:12:48 - LMT 1914 787 -3:00 Brazil BR%sT 1990 Sep 17 788 -3:00 - BRT 1995 Sep 14 789 -3:00 Brazil BR%sT 2003 Sep 24 790 -3:00 - BRT 791# 792# Alagoas (AL), Sergipe (SE) 793Zone America/Maceio -2:22:52 - LMT 1914 794 -3:00 Brazil BR%sT 1990 Sep 17 795 -3:00 - BRT 1995 Oct 13 796 -3:00 Brazil BR%sT 1996 Sep 4 797 -3:00 - BRT 1999 Sep 30 798 -3:00 Brazil BR%sT 2000 Oct 22 799 -3:00 - BRT 2001 Sep 13 800 -3:00 Brazil BR%sT 2002 Oct 1 801 -3:00 - BRT 802# 803# Bahia (BA) 804# There are too many Salvadors elsewhere, so use America/Bahia instead 805# of America/Salvador. 806Zone America/Bahia -2:34:04 - LMT 1914 807 -3:00 Brazil BR%sT 2003 Sep 24 808 -3:00 - BRT 809# 810# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 811# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 812# Santa Catarina (SC), Rio Grande do Sul (RS) 813Zone America/Sao_Paulo -3:06:28 - LMT 1914 814 -3:00 Brazil BR%sT 1963 Oct 23 00:00 815 -3:00 1:00 BRST 1964 816 -3:00 Brazil BR%sT 817# 818# Mato Grosso do Sul (MS) 819Zone America/Campo_Grande -3:38:28 - LMT 1914 820 -4:00 Brazil AM%sT 821# 822# Mato Grosso (MT) 823Zone America/Cuiaba -3:44:20 - LMT 1914 824 -4:00 Brazil AM%sT 2003 Sep 24 825 -4:00 - AMT 2004 Oct 1 826 -4:00 Brazil AM%sT 827# 828# Rondonia (RO) 829Zone America/Porto_Velho -4:15:36 - LMT 1914 830 -4:00 Brazil AM%sT 1988 Sep 12 831 -4:00 - AMT 832# 833# Roraima (RR) 834Zone America/Boa_Vista -4:02:40 - LMT 1914 835 -4:00 Brazil AM%sT 1988 Sep 12 836 -4:00 - AMT 1999 Sep 30 837 -4:00 Brazil AM%sT 2000 Oct 15 838 -4:00 - AMT 839# 840# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 841# The great circle line from Tabatinga to Porto Acre divides 842# east from west Amazonas. 843Zone America/Manaus -4:00:04 - LMT 1914 844 -4:00 Brazil AM%sT 1988 Sep 12 845 -4:00 - AMT 1993 Sep 28 846 -4:00 Brazil AM%sT 1994 Sep 22 847 -4:00 - AMT 848# 849# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 850# Eirunepe, Envira, Ipixuna 851Zone America/Eirunepe -4:39:28 - LMT 1914 852 -5:00 Brazil AC%sT 1988 Sep 12 853 -5:00 - ACT 1993 Sep 28 854 -5:00 Brazil AC%sT 1994 Sep 22 855 -5:00 - ACT 2008 Jun 24 00:00 856 -4:00 - AMT 857# 858# Acre (AC) 859Zone America/Rio_Branco -4:31:12 - LMT 1914 860 -5:00 Brazil AC%sT 1988 Sep 12 861 -5:00 - ACT 2008 Jun 24 00:00 862 -4:00 - AMT 863 864# Chile 865 866# From Eduardo Krell (1995-10-19): 867# The law says to switch to DST at midnight [24:00] on the second SATURDAY 868# of October.... The law is the same for March and October. 869# (1998-09-29): 870# Because of the drought this year, the government decided to go into 871# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 872# (unless there's another dry season next year, I guess). 873 874# From Julio I. Pacheco Troncoso (1999-03-18): 875# Because of the same drought, the government decided to end DST later, 876# on April 3, (one-time change). 877 878# From Oscar van Vlijmen (2006-10-08): 879# http://www.horaoficial.cl/cambio.htm 880 881# From Jesper Norgaard Welen (2006-10-08): 882# I think that there are some obvious mistakes in the suggested link 883# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 884# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 885# (they should have been 1990-09-15 and 1990-09-16 respectively), but 886# anyhow it clears up some doubts too. 887 888# From Paul Eggert (2006-12-27): 889# The following data for Chile and America/Santiago are from 890# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 891# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 892# & Pottenger, except with DST transitions after 1932 cloned from 893# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 894# but we have no other source. 895 896# From German Poo-Caaman~o (2008-03-03): 897# Due to drought, Chile extends Daylight Time in three weeks. This 898# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 899# and Saturday 3/29 at 22:00 for Pacific/Easter) 900# The Supreme Decree is located at 901# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 902# http://www.shoa.cl/servicios/supremo316.pdf 903# </a> 904# and the instructions for 2008 are located in: 905# <a href="http://www.horaoficial.cl/cambio.htm"> 906# http://www.horaoficial.cl/cambio.htm 907# </a>. 908 909# From Jose Miguel Garrido (2008-03-05): 910# ... 911# You could see the announces of the change on 912# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 913# http://www.shoa.cl/noticias/2008/04hora/hora.htm 914# </a>. 915 916# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 917Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 918Rule Chile 1928 1932 - Apr 1 0:00 0 - 919Rule Chile 1942 only - Jun 1 4:00u 0 - 920Rule Chile 1942 only - Aug 1 5:00u 1:00 S 921Rule Chile 1946 only - Jul 15 4:00u 1:00 S 922Rule Chile 1946 only - Sep 1 3:00u 0:00 - 923Rule Chile 1947 only - Apr 1 4:00u 0 - 924Rule Chile 1968 only - Nov 3 4:00u 1:00 S 925Rule Chile 1969 only - Mar 30 3:00u 0 - 926Rule Chile 1969 only - Nov 23 4:00u 1:00 S 927Rule Chile 1970 only - Mar 29 3:00u 0 - 928Rule Chile 1971 only - Mar 14 3:00u 0 - 929Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 930Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 931Rule Chile 1973 only - Sep 30 4:00u 1:00 S 932Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 933Rule Chile 1987 only - Apr 12 3:00u 0 - 934Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 935Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 936Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 937Rule Chile 1990 only - Mar 18 3:00u 0 - 938Rule Chile 1990 only - Sep 16 4:00u 1:00 S 939Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 940Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 941Rule Chile 1997 only - Mar 30 3:00u 0 - 942Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 943Rule Chile 1998 only - Sep 27 4:00u 1:00 S 944Rule Chile 1999 only - Apr 4 3:00u 0 - 945Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 946Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 947# N.B.: the end of March 29 in Chile is March 30 in Universal time, 948# which is used below in specifying the transition. 949Rule Chile 2008 only - Mar 30 3:00u 0 - 950Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - 951# IATA SSIM anomalies: (1992-02) says 1992-03-14; 952# (1996-09) says 1998-03-08. Ignore these. 953# Zone NAME GMTOFF RULES FORMAT [UNTIL] 954Zone America/Santiago -4:42:46 - LMT 1890 955 -4:42:46 - SMT 1910 # Santiago Mean Time 956 -5:00 - CLT 1916 Jul 1 # Chile Time 957 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 958 -4:00 - CLT 1919 Jul 1 # Chile Time 959 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 960 -5:00 Chile CL%sT 1947 May 22 # Chile Time 961 -4:00 Chile CL%sT 962Zone Pacific/Easter -7:17:44 - LMT 1890 963 -7:17:28 - EMT 1932 Sep # Easter Mean Time 964 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 965 -6:00 Chile EAS%sT 966# 967# Sala y Gomez Island is like Pacific/Easter. 968# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 969# San Felix, and Antarctic bases, are like America/Santiago. 970 971# Colombia 972# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 973Rule CO 1992 only - May 3 0:00 1:00 S 974Rule CO 1993 only - Apr 4 0:00 0 - 975# Zone NAME GMTOFF RULES FORMAT [UNTIL] 976Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 977 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 978 -5:00 CO CO%sT # Colombia Time 979# Malpelo, Providencia, San Andres 980# no information; probably like America/Bogota 981 982# Curacao 983# 984# From Paul Eggert (2006-03-22): 985# Shanks & Pottenger say that The Bottom and Philipsburg have been at 986# -4:00 since standard time was introduced on 1912-03-02; and that 987# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 988# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 989# Saba Island has been like Curacao. 990# This all predates our 1970 cutoff, though. 991# 992# By July 2007 Curacao and St Maarten are planned to become 993# associated states within the Netherlands, much like Aruba; 994# Bonaire, Saba and St Eustatius would become directly part of the 995# Netherlands as Kingdom Islands. This won't affect their time zones 996# though, as far as we know. 997# 998# Zone NAME GMTOFF RULES FORMAT [UNTIL] 999Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1000 -4:30 - ANT 1965 # Netherlands Antilles Time 1001 -4:00 - AST 1002 1003# Ecuador 1004# 1005# From Paul Eggert (2007-03-04): 1006# Apparently Ecuador had a failed experiment with DST in 1992. 1007# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1008# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1009# talk about "hora Sixto". Leave this alone for now, as we have no data. 1010# 1011# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1012Zone America/Guayaquil -5:19:20 - LMT 1890 1013 -5:14:00 - QMT 1931 # Quito Mean Time 1014 -5:00 - ECT # Ecuador Time 1015Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1016 -5:00 - ECT 1986 1017 -6:00 - GALT # Galapagos Time 1018 1019# Falklands 1020 1021# From Paul Eggert (2006-03-22): 1022# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1023# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1024 1025# From Falkland Islands Government Office, London (2001-01-22) 1026# via Jesper Norgaard: 1027# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1028# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1029# September. It is anticipated that the clocks will revert back at 2 1030# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1031# Sunday 1 September. 1032 1033# From Rives McDow (2001-02-13): 1034# 1035# I have communicated several times with people there, and the last 1036# time I had communications that was helpful was in 1998. Here is 1037# what was said then: 1038# 1039# "The general rule was that Stanley used daylight saving and the Camp 1040# did not. However for various reasons many people in the Camp have 1041# started to use daylight saving (known locally as 'Stanley Time') 1042# There is no rule as to who uses daylight saving - it is a matter of 1043# personal choice and so it is impossible to draw a map showing who 1044# uses it and who does not. Any list would be out of date as soon as 1045# it was produced. This year daylight saving ended on April 18/19th 1046# and started again on September 12/13th. I do not know what the rule 1047# is, but can find out if you like. We do not change at the same time 1048# as UK or Chile." 1049# 1050# I did have in my notes that the rule was "Second Saturday in Sep at 1051# 0:00 until third Saturday in Apr at 0:00". I think that this does 1052# not agree in some cases with Shanks; is this true? 1053# 1054# Also, there is no mention in the list that some areas in the 1055# Falklands do not use DST. I have found in my communications there 1056# that these areas are on the western half of East Falkland and all of 1057# West Falkland. Stanley is the only place that consistently observes 1058# DST. Again, as in other places in the world, the farmers don't like 1059# it. West Falkland is almost entirely sheep farmers. 1060# 1061# I know one lady there that keeps a list of which farm keeps DST and 1062# which doesn't each year. She runs a shop in Stanley, and says that 1063# the list changes each year. She uses it to communicate to her 1064# customers, catching them when they are home for lunch or dinner. 1065 1066# From Paul Eggert (2001-03-05): 1067# For now, we'll just record the time in Stanley, since we have no 1068# better info. 1069 1070# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1071Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1072Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1073Rule Falk 1939 only - Oct 1 0:00 1:00 S 1074Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1075Rule Falk 1943 only - Jan 1 0:00 0 - 1076Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1077Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1078Rule Falk 1984 only - Sep 16 0:00 1:00 S 1079Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1080Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1081Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1082Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1083# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1084Zone Atlantic/Stanley -3:51:24 - LMT 1890 1085 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1086 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1087 -3:00 Falk FK%sT 1985 Sep 15 1088 -4:00 Falk FK%sT 1089 1090# French Guiana 1091# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1092Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1093 -4:00 - GFT 1967 Oct # French Guiana Time 1094 -3:00 - GFT 1095 1096# Guyana 1097# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1098Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1099 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1100 -3:45 - GYT 1975 Jul 31 # Guyana Time 1101 -3:00 - GYT 1991 1102# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1103 -4:00 - GYT 1104 1105# Paraguay 1106# From Paul Eggert (2006-03-22): 1107# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1108# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1109# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1110# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1111Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1112Rule Para 1975 1978 - Mar 1 0:00 0 - 1113Rule Para 1979 1991 - Apr 1 0:00 0 - 1114Rule Para 1989 only - Oct 22 0:00 1:00 S 1115Rule Para 1990 only - Oct 1 0:00 1:00 S 1116Rule Para 1991 only - Oct 6 0:00 1:00 S 1117Rule Para 1992 only - Mar 1 0:00 0 - 1118Rule Para 1992 only - Oct 5 0:00 1:00 S 1119Rule Para 1993 only - Mar 31 0:00 0 - 1120Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1121Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1122Rule Para 1996 only - Mar 1 0:00 0 - 1123# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1124# From Steffen Thorsen (2000-10-02): 1125# I have three independent reports that Paraguay changed to DST this Sunday 1126# (10-01). 1127# 1128# Translated by Gwillim Law (2001-02-27) from 1129# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1130# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1131# </a>: 1132# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1133# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1134# system has been operating for several years. Formerly there was a separate 1135# decree each year; the new law has the same effect, but permanently. Every 1136# year, the time will change on the first Sunday of October; likewise, the 1137# clock will be set back on the first Sunday of March. 1138# 1139Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1140# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1141Rule Para 1997 only - Feb lastSun 0:00 0 - 1142# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1143# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1144Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1145# From Rives McDow (2002-02-28): 1146# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1147# dst method to be from the first Sunday in September to the first Sunday in 1148# April. 1149Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1150Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1151# 1152# From Jesper Norgaard Welen (2005-01-02): 1153# There are several sources that claim that Paraguay made 1154# a timezone rule change in autumn 2004. 1155# From Steffen Thorsen (2005-01-05): 1156# Decree 1,867 (2004-03-05) 1157# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1158# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1159Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1160Rule Para 2005 max - Mar Sun>=8 0:00 0 - 1161 1162# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1163Zone America/Asuncion -3:50:40 - LMT 1890 1164 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1165 -4:00 - PYT 1972 Oct # Paraguay Time 1166 -3:00 - PYT 1974 Apr 1167 -4:00 Para PY%sT 1168 1169# Peru 1170# 1171# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1172# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1173# When we were in Peru in 1985-1986, they apparently switched over 1174# sometime between December 29 and January 3 while we were on the Amazon. 1175# 1176# From Paul Eggert (2006-03-22): 1177# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1178 1179# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1180Rule Peru 1938 only - Jan 1 0:00 1:00 S 1181Rule Peru 1938 only - Apr 1 0:00 0 - 1182Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1183Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1184Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1185Rule Peru 1986 1987 - Apr 1 0:00 0 - 1186Rule Peru 1990 only - Jan 1 0:00 1:00 S 1187Rule Peru 1990 only - Apr 1 0:00 0 - 1188# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1189Rule Peru 1994 only - Jan 1 0:00 1:00 S 1190Rule Peru 1994 only - Apr 1 0:00 0 - 1191# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1192Zone America/Lima -5:08:12 - LMT 1890 1193 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1194 -5:00 Peru PE%sT # Peru Time 1195 1196# South Georgia 1197# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1198Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1199 -2:00 - GST # South Georgia Time 1200 1201# South Sandwich Is 1202# uninhabited; scientific personnel have wintered 1203 1204# Suriname 1205# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1206Zone America/Paramaribo -3:40:40 - LMT 1911 1207 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1208 -3:40:36 - PMT 1945 Oct # The capital moved? 1209 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1210 -3:30 - SRT 1984 Oct # Suriname Time 1211 -3:00 - SRT 1212 1213# Trinidad and Tobago 1214# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1215Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1216 -4:00 - AST 1217 1218# Uruguay 1219# From Paul Eggert (1993-11-18): 1220# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1221# From Shanks & Pottenger: 1222# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1223# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1224Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1225Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1226Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1227Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1228# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1229Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1230Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1231Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1232# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1233Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1234# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1235# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1236Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1237Rule Uruguay 1942 only - Jan 1 0:00 0 - 1238Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1239Rule Uruguay 1943 only - Mar 14 0:00 0 - 1240Rule Uruguay 1959 only - May 24 0:00 1:00 S 1241Rule Uruguay 1959 only - Nov 15 0:00 0 - 1242Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1243Rule Uruguay 1960 only - Mar 6 0:00 0 - 1244Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1245Rule Uruguay 1965 only - Sep 26 0:00 0 - 1246Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1247Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1248Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1249Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1250Rule Uruguay 1972 only - Aug 15 0:00 0 - 1251Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1252Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1253Rule Uruguay 1976 only - Oct 1 0:00 0 - 1254Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1255Rule Uruguay 1978 only - Apr 1 0:00 0 - 1256Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1257Rule Uruguay 1980 only - May 1 0:00 0 - 1258Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1259Rule Uruguay 1988 only - Mar 14 0:00 0 - 1260Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1261Rule Uruguay 1989 only - Mar 12 0:00 0 - 1262Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1263# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1264# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1265Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1266Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1267Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1268Rule Uruguay 1993 only - Feb 28 0:00 0 - 1269# From Eduardo Cota (2004-09-20): 1270# The uruguayan government has decreed a change in the local time.... 1271# http://www.presidencia.gub.uy/decretos/2004091502.htm 1272Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1273# From Steffen Thorsen (2005-03-11): 1274# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1275# save energy ... it was postponed two weeks.... 1276# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1277Rule Uruguay 2005 only - Mar 27 2:00 0 - 1278# From Eduardo Cota (2005-09-27): 1279# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1280# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1281# 02:00 local time, official time in Uruguay will be at GMT -2. 1282Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1283Rule Uruguay 2006 only - Mar 12 2:00 0 - 1284# From Jesper Norgaard Welen (2006-09-06): 1285# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1286Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1287Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1288# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1289Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1290 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1291 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1292 -3:00 Uruguay UY%sT 1293 1294# Venezuela 1295# 1296# From John Stainforth (2007-11-28): 1297# ... the change for Venezuela originally expected for 2007-12-31 has 1298# been brought forward to 2007-12-09. The official announcement was 1299# published today in the "Gaceta Oficial de la Republica Bolivariana 1300# de Venezuela, numero 38.819" (official document for all laws or 1301# resolution publication) 1302# http://www.globovision.com/news.php?nid=72208 1303 1304# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1305Zone America/Caracas -4:27:44 - LMT 1890 1306 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1307 -4:30 - VET 1965 # Venezuela Time 1308 -4:00 - VET 2007 Dec 9 03:00 1309 -4:30 - VET
| 773# The latest ruleset listed above says that the following states observe DST: 774# DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 775# For dates after mid-2008, the above rules with TO="max" are guesses 776# and are quite possibly wrong, but are more likely than no DST at all. 777 778# Zone NAME GMTOFF RULES FORMAT [UNTIL] 779# 780# Fernando de Noronha (administratively part of PE) 781Zone America/Noronha -2:09:40 - LMT 1914 782 -2:00 Brazil FN%sT 1990 Sep 17 783 -2:00 - FNT 1999 Sep 30 784 -2:00 Brazil FN%sT 2000 Oct 15 785 -2:00 - FNT 2001 Sep 13 786 -2:00 Brazil FN%sT 2002 Oct 1 787 -2:00 - FNT 788# Other Atlantic islands have no permanent settlement. 789# These include Trindade and Martin Vaz (administratively part of ES), 790# Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). 791# Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 792# it also included the Penedos. 793# 794# Amapa (AP), east Para (PA) 795# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 796# The division between east and west Para is the river Xingu. 797# In the north a very small part from the river Javary (now Jari I guess, 798# the border with Amapa) to the Amazon, then to the Xingu. 799Zone America/Belem -3:13:56 - LMT 1914 800 -3:00 Brazil BR%sT 1988 Sep 12 801 -3:00 - BRT 802# 803# west Para (PA) 804# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 805Zone America/Santarem -3:38:48 - LMT 1914 806 -4:00 Brazil AM%sT 1988 Sep 12 807 -4:00 - AMT 2008 Jun 24 00:00 808 -3:00 - BRT 809# 810# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 811# Paraiba (PB) 812Zone America/Fortaleza -2:34:00 - LMT 1914 813 -3:00 Brazil BR%sT 1990 Sep 17 814 -3:00 - BRT 1999 Sep 30 815 -3:00 Brazil BR%sT 2000 Oct 22 816 -3:00 - BRT 2001 Sep 13 817 -3:00 Brazil BR%sT 2002 Oct 1 818 -3:00 - BRT 819# 820# Pernambuco (PE) (except Atlantic islands) 821Zone America/Recife -2:19:36 - LMT 1914 822 -3:00 Brazil BR%sT 1990 Sep 17 823 -3:00 - BRT 1999 Sep 30 824 -3:00 Brazil BR%sT 2000 Oct 15 825 -3:00 - BRT 2001 Sep 13 826 -3:00 Brazil BR%sT 2002 Oct 1 827 -3:00 - BRT 828# 829# Tocantins (TO) 830Zone America/Araguaina -3:12:48 - LMT 1914 831 -3:00 Brazil BR%sT 1990 Sep 17 832 -3:00 - BRT 1995 Sep 14 833 -3:00 Brazil BR%sT 2003 Sep 24 834 -3:00 - BRT 835# 836# Alagoas (AL), Sergipe (SE) 837Zone America/Maceio -2:22:52 - LMT 1914 838 -3:00 Brazil BR%sT 1990 Sep 17 839 -3:00 - BRT 1995 Oct 13 840 -3:00 Brazil BR%sT 1996 Sep 4 841 -3:00 - BRT 1999 Sep 30 842 -3:00 Brazil BR%sT 2000 Oct 22 843 -3:00 - BRT 2001 Sep 13 844 -3:00 Brazil BR%sT 2002 Oct 1 845 -3:00 - BRT 846# 847# Bahia (BA) 848# There are too many Salvadors elsewhere, so use America/Bahia instead 849# of America/Salvador. 850Zone America/Bahia -2:34:04 - LMT 1914 851 -3:00 Brazil BR%sT 2003 Sep 24 852 -3:00 - BRT 853# 854# Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 855# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 856# Santa Catarina (SC), Rio Grande do Sul (RS) 857Zone America/Sao_Paulo -3:06:28 - LMT 1914 858 -3:00 Brazil BR%sT 1963 Oct 23 00:00 859 -3:00 1:00 BRST 1964 860 -3:00 Brazil BR%sT 861# 862# Mato Grosso do Sul (MS) 863Zone America/Campo_Grande -3:38:28 - LMT 1914 864 -4:00 Brazil AM%sT 865# 866# Mato Grosso (MT) 867Zone America/Cuiaba -3:44:20 - LMT 1914 868 -4:00 Brazil AM%sT 2003 Sep 24 869 -4:00 - AMT 2004 Oct 1 870 -4:00 Brazil AM%sT 871# 872# Rondonia (RO) 873Zone America/Porto_Velho -4:15:36 - LMT 1914 874 -4:00 Brazil AM%sT 1988 Sep 12 875 -4:00 - AMT 876# 877# Roraima (RR) 878Zone America/Boa_Vista -4:02:40 - LMT 1914 879 -4:00 Brazil AM%sT 1988 Sep 12 880 -4:00 - AMT 1999 Sep 30 881 -4:00 Brazil AM%sT 2000 Oct 15 882 -4:00 - AMT 883# 884# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 885# The great circle line from Tabatinga to Porto Acre divides 886# east from west Amazonas. 887Zone America/Manaus -4:00:04 - LMT 1914 888 -4:00 Brazil AM%sT 1988 Sep 12 889 -4:00 - AMT 1993 Sep 28 890 -4:00 Brazil AM%sT 1994 Sep 22 891 -4:00 - AMT 892# 893# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 894# Eirunepe, Envira, Ipixuna 895Zone America/Eirunepe -4:39:28 - LMT 1914 896 -5:00 Brazil AC%sT 1988 Sep 12 897 -5:00 - ACT 1993 Sep 28 898 -5:00 Brazil AC%sT 1994 Sep 22 899 -5:00 - ACT 2008 Jun 24 00:00 900 -4:00 - AMT 901# 902# Acre (AC) 903Zone America/Rio_Branco -4:31:12 - LMT 1914 904 -5:00 Brazil AC%sT 1988 Sep 12 905 -5:00 - ACT 2008 Jun 24 00:00 906 -4:00 - AMT 907 908# Chile 909 910# From Eduardo Krell (1995-10-19): 911# The law says to switch to DST at midnight [24:00] on the second SATURDAY 912# of October.... The law is the same for March and October. 913# (1998-09-29): 914# Because of the drought this year, the government decided to go into 915# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 916# (unless there's another dry season next year, I guess). 917 918# From Julio I. Pacheco Troncoso (1999-03-18): 919# Because of the same drought, the government decided to end DST later, 920# on April 3, (one-time change). 921 922# From Oscar van Vlijmen (2006-10-08): 923# http://www.horaoficial.cl/cambio.htm 924 925# From Jesper Norgaard Welen (2006-10-08): 926# I think that there are some obvious mistakes in the suggested link 927# from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 928# ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 929# (they should have been 1990-09-15 and 1990-09-16 respectively), but 930# anyhow it clears up some doubts too. 931 932# From Paul Eggert (2006-12-27): 933# The following data for Chile and America/Santiago are from 934# <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 935# Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 936# & Pottenger, except with DST transitions after 1932 cloned from 937# America/Santiago. The pre-1980 Pacific/Easter data are dubious, 938# but we have no other source. 939 940# From German Poo-Caaman~o (2008-03-03): 941# Due to drought, Chile extends Daylight Time in three weeks. This 942# is one-time change (Saturday 3/29 at 24:00 for America/Santiago 943# and Saturday 3/29 at 22:00 for Pacific/Easter) 944# The Supreme Decree is located at 945# <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 946# http://www.shoa.cl/servicios/supremo316.pdf 947# </a> 948# and the instructions for 2008 are located in: 949# <a href="http://www.horaoficial.cl/cambio.htm"> 950# http://www.horaoficial.cl/cambio.htm 951# </a>. 952 953# From Jose Miguel Garrido (2008-03-05): 954# ... 955# You could see the announces of the change on 956# <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 957# http://www.shoa.cl/noticias/2008/04hora/hora.htm 958# </a>. 959 960# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 961Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 962Rule Chile 1928 1932 - Apr 1 0:00 0 - 963Rule Chile 1942 only - Jun 1 4:00u 0 - 964Rule Chile 1942 only - Aug 1 5:00u 1:00 S 965Rule Chile 1946 only - Jul 15 4:00u 1:00 S 966Rule Chile 1946 only - Sep 1 3:00u 0:00 - 967Rule Chile 1947 only - Apr 1 4:00u 0 - 968Rule Chile 1968 only - Nov 3 4:00u 1:00 S 969Rule Chile 1969 only - Mar 30 3:00u 0 - 970Rule Chile 1969 only - Nov 23 4:00u 1:00 S 971Rule Chile 1970 only - Mar 29 3:00u 0 - 972Rule Chile 1971 only - Mar 14 3:00u 0 - 973Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 974Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 975Rule Chile 1973 only - Sep 30 4:00u 1:00 S 976Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 977Rule Chile 1987 only - Apr 12 3:00u 0 - 978Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 979Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 980Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 981Rule Chile 1990 only - Mar 18 3:00u 0 - 982Rule Chile 1990 only - Sep 16 4:00u 1:00 S 983Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 984Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 985Rule Chile 1997 only - Mar 30 3:00u 0 - 986Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 987Rule Chile 1998 only - Sep 27 4:00u 1:00 S 988Rule Chile 1999 only - Apr 4 3:00u 0 - 989Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 990Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 991# N.B.: the end of March 29 in Chile is March 30 in Universal time, 992# which is used below in specifying the transition. 993Rule Chile 2008 only - Mar 30 3:00u 0 - 994Rule Chile 2009 max - Mar Sun>=9 3:00u 0 - 995# IATA SSIM anomalies: (1992-02) says 1992-03-14; 996# (1996-09) says 1998-03-08. Ignore these. 997# Zone NAME GMTOFF RULES FORMAT [UNTIL] 998Zone America/Santiago -4:42:46 - LMT 1890 999 -4:42:46 - SMT 1910 # Santiago Mean Time 1000 -5:00 - CLT 1916 Jul 1 # Chile Time 1001 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1002 -4:00 - CLT 1919 Jul 1 # Chile Time 1003 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1004 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1005 -4:00 Chile CL%sT 1006Zone Pacific/Easter -7:17:44 - LMT 1890 1007 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1008 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1009 -6:00 Chile EAS%sT 1010# 1011# Sala y Gomez Island is like Pacific/Easter. 1012# Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1013# San Felix, and Antarctic bases, are like America/Santiago. 1014 1015# Colombia 1016# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1017Rule CO 1992 only - May 3 0:00 1:00 S 1018Rule CO 1993 only - Apr 4 0:00 0 - 1019# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1020Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1021 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1022 -5:00 CO CO%sT # Colombia Time 1023# Malpelo, Providencia, San Andres 1024# no information; probably like America/Bogota 1025 1026# Curacao 1027# 1028# From Paul Eggert (2006-03-22): 1029# Shanks & Pottenger say that The Bottom and Philipsburg have been at 1030# -4:00 since standard time was introduced on 1912-03-02; and that 1031# Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1032# 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1033# Saba Island has been like Curacao. 1034# This all predates our 1970 cutoff, though. 1035# 1036# By July 2007 Curacao and St Maarten are planned to become 1037# associated states within the Netherlands, much like Aruba; 1038# Bonaire, Saba and St Eustatius would become directly part of the 1039# Netherlands as Kingdom Islands. This won't affect their time zones 1040# though, as far as we know. 1041# 1042# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1043Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1044 -4:30 - ANT 1965 # Netherlands Antilles Time 1045 -4:00 - AST 1046 1047# Ecuador 1048# 1049# From Paul Eggert (2007-03-04): 1050# Apparently Ecuador had a failed experiment with DST in 1992. 1051# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1052# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1053# talk about "hora Sixto". Leave this alone for now, as we have no data. 1054# 1055# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1056Zone America/Guayaquil -5:19:20 - LMT 1890 1057 -5:14:00 - QMT 1931 # Quito Mean Time 1058 -5:00 - ECT # Ecuador Time 1059Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1060 -5:00 - ECT 1986 1061 -6:00 - GALT # Galapagos Time 1062 1063# Falklands 1064 1065# From Paul Eggert (2006-03-22): 1066# Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1067# the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1068 1069# From Falkland Islands Government Office, London (2001-01-22) 1070# via Jesper Norgaard: 1071# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1072# April 2001 and advance one hour to summer time at 2 am on Sunday 2 1073# September. It is anticipated that the clocks will revert back at 2 1074# am on Sunday 21 April 2002 and advance to summer time at 2 am on 1075# Sunday 1 September. 1076 1077# From Rives McDow (2001-02-13): 1078# 1079# I have communicated several times with people there, and the last 1080# time I had communications that was helpful was in 1998. Here is 1081# what was said then: 1082# 1083# "The general rule was that Stanley used daylight saving and the Camp 1084# did not. However for various reasons many people in the Camp have 1085# started to use daylight saving (known locally as 'Stanley Time') 1086# There is no rule as to who uses daylight saving - it is a matter of 1087# personal choice and so it is impossible to draw a map showing who 1088# uses it and who does not. Any list would be out of date as soon as 1089# it was produced. This year daylight saving ended on April 18/19th 1090# and started again on September 12/13th. I do not know what the rule 1091# is, but can find out if you like. We do not change at the same time 1092# as UK or Chile." 1093# 1094# I did have in my notes that the rule was "Second Saturday in Sep at 1095# 0:00 until third Saturday in Apr at 0:00". I think that this does 1096# not agree in some cases with Shanks; is this true? 1097# 1098# Also, there is no mention in the list that some areas in the 1099# Falklands do not use DST. I have found in my communications there 1100# that these areas are on the western half of East Falkland and all of 1101# West Falkland. Stanley is the only place that consistently observes 1102# DST. Again, as in other places in the world, the farmers don't like 1103# it. West Falkland is almost entirely sheep farmers. 1104# 1105# I know one lady there that keeps a list of which farm keeps DST and 1106# which doesn't each year. She runs a shop in Stanley, and says that 1107# the list changes each year. She uses it to communicate to her 1108# customers, catching them when they are home for lunch or dinner. 1109 1110# From Paul Eggert (2001-03-05): 1111# For now, we'll just record the time in Stanley, since we have no 1112# better info. 1113 1114# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1115Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1116Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1117Rule Falk 1939 only - Oct 1 0:00 1:00 S 1118Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1119Rule Falk 1943 only - Jan 1 0:00 0 - 1120Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1121Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1122Rule Falk 1984 only - Sep 16 0:00 1:00 S 1123Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1124Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1125Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1126Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1127# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1128Zone Atlantic/Stanley -3:51:24 - LMT 1890 1129 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1130 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1131 -3:00 Falk FK%sT 1985 Sep 15 1132 -4:00 Falk FK%sT 1133 1134# French Guiana 1135# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1136Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1137 -4:00 - GFT 1967 Oct # French Guiana Time 1138 -3:00 - GFT 1139 1140# Guyana 1141# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1142Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1143 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1144 -3:45 - GYT 1975 Jul 31 # Guyana Time 1145 -3:00 - GYT 1991 1146# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1147 -4:00 - GYT 1148 1149# Paraguay 1150# From Paul Eggert (2006-03-22): 1151# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1152# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1153# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1154# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1155Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1156Rule Para 1975 1978 - Mar 1 0:00 0 - 1157Rule Para 1979 1991 - Apr 1 0:00 0 - 1158Rule Para 1989 only - Oct 22 0:00 1:00 S 1159Rule Para 1990 only - Oct 1 0:00 1:00 S 1160Rule Para 1991 only - Oct 6 0:00 1:00 S 1161Rule Para 1992 only - Mar 1 0:00 0 - 1162Rule Para 1992 only - Oct 5 0:00 1:00 S 1163Rule Para 1993 only - Mar 31 0:00 0 - 1164Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1165Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1166Rule Para 1996 only - Mar 1 0:00 0 - 1167# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1168# From Steffen Thorsen (2000-10-02): 1169# I have three independent reports that Paraguay changed to DST this Sunday 1170# (10-01). 1171# 1172# Translated by Gwillim Law (2001-02-27) from 1173# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1174# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1175# </a>: 1176# Starting at 0:00 today, the clock will be set forward 60 minutes, in 1177# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1178# system has been operating for several years. Formerly there was a separate 1179# decree each year; the new law has the same effect, but permanently. Every 1180# year, the time will change on the first Sunday of October; likewise, the 1181# clock will be set back on the first Sunday of March. 1182# 1183Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1184# IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1185Rule Para 1997 only - Feb lastSun 0:00 0 - 1186# Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1187# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1188Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1189# From Rives McDow (2002-02-28): 1190# A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1191# dst method to be from the first Sunday in September to the first Sunday in 1192# April. 1193Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1194Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1195# 1196# From Jesper Norgaard Welen (2005-01-02): 1197# There are several sources that claim that Paraguay made 1198# a timezone rule change in autumn 2004. 1199# From Steffen Thorsen (2005-01-05): 1200# Decree 1,867 (2004-03-05) 1201# From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1202# <http://www.presidencia.gov.py/decretos/D1867.pdf> 1203Rule Para 2004 max - Oct Sun>=15 0:00 1:00 S 1204Rule Para 2005 max - Mar Sun>=8 0:00 0 - 1205 1206# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1207Zone America/Asuncion -3:50:40 - LMT 1890 1208 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1209 -4:00 - PYT 1972 Oct # Paraguay Time 1210 -3:00 - PYT 1974 Apr 1211 -4:00 Para PY%sT 1212 1213# Peru 1214# 1215# <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> 1216# From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1217# When we were in Peru in 1985-1986, they apparently switched over 1218# sometime between December 29 and January 3 while we were on the Amazon. 1219# 1220# From Paul Eggert (2006-03-22): 1221# Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1222 1223# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1224Rule Peru 1938 only - Jan 1 0:00 1:00 S 1225Rule Peru 1938 only - Apr 1 0:00 0 - 1226Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1227Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1228Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1229Rule Peru 1986 1987 - Apr 1 0:00 0 - 1230Rule Peru 1990 only - Jan 1 0:00 1:00 S 1231Rule Peru 1990 only - Apr 1 0:00 0 - 1232# IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1233Rule Peru 1994 only - Jan 1 0:00 1:00 S 1234Rule Peru 1994 only - Apr 1 0:00 0 - 1235# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1236Zone America/Lima -5:08:12 - LMT 1890 1237 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1238 -5:00 Peru PE%sT # Peru Time 1239 1240# South Georgia 1241# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1242Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1243 -2:00 - GST # South Georgia Time 1244 1245# South Sandwich Is 1246# uninhabited; scientific personnel have wintered 1247 1248# Suriname 1249# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1250Zone America/Paramaribo -3:40:40 - LMT 1911 1251 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1252 -3:40:36 - PMT 1945 Oct # The capital moved? 1253 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1254 -3:30 - SRT 1984 Oct # Suriname Time 1255 -3:00 - SRT 1256 1257# Trinidad and Tobago 1258# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1259Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1260 -4:00 - AST 1261 1262# Uruguay 1263# From Paul Eggert (1993-11-18): 1264# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1265# From Shanks & Pottenger: 1266# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1267# Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1268Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1269Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1270Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1271Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1272# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1273Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1274Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1275Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1276# Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1277Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1278# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1279# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1280Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1281Rule Uruguay 1942 only - Jan 1 0:00 0 - 1282Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1283Rule Uruguay 1943 only - Mar 14 0:00 0 - 1284Rule Uruguay 1959 only - May 24 0:00 1:00 S 1285Rule Uruguay 1959 only - Nov 15 0:00 0 - 1286Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1287Rule Uruguay 1960 only - Mar 6 0:00 0 - 1288Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1289Rule Uruguay 1965 only - Sep 26 0:00 0 - 1290Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1291Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1292Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1293Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1294Rule Uruguay 1972 only - Aug 15 0:00 0 - 1295Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1296Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1297Rule Uruguay 1976 only - Oct 1 0:00 0 - 1298Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1299Rule Uruguay 1978 only - Apr 1 0:00 0 - 1300Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1301Rule Uruguay 1980 only - May 1 0:00 0 - 1302Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1303Rule Uruguay 1988 only - Mar 14 0:00 0 - 1304Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1305Rule Uruguay 1989 only - Mar 12 0:00 0 - 1306Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1307# Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1308# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1309Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1310Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1311Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1312Rule Uruguay 1993 only - Feb 28 0:00 0 - 1313# From Eduardo Cota (2004-09-20): 1314# The uruguayan government has decreed a change in the local time.... 1315# http://www.presidencia.gub.uy/decretos/2004091502.htm 1316Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1317# From Steffen Thorsen (2005-03-11): 1318# Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1319# save energy ... it was postponed two weeks.... 1320# http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1321Rule Uruguay 2005 only - Mar 27 2:00 0 - 1322# From Eduardo Cota (2005-09-27): 1323# http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1324# This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1325# 02:00 local time, official time in Uruguay will be at GMT -2. 1326Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1327Rule Uruguay 2006 only - Mar 12 2:00 0 - 1328# From Jesper Norgaard Welen (2006-09-06): 1329# http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1330Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1331Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1332# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1333Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1334 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1335 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1336 -3:00 Uruguay UY%sT 1337 1338# Venezuela 1339# 1340# From John Stainforth (2007-11-28): 1341# ... the change for Venezuela originally expected for 2007-12-31 has 1342# been brought forward to 2007-12-09. The official announcement was 1343# published today in the "Gaceta Oficial de la Republica Bolivariana 1344# de Venezuela, numero 38.819" (official document for all laws or 1345# resolution publication) 1346# http://www.globovision.com/news.php?nid=72208 1347 1348# Zone NAME GMTOFF RULES FORMAT [UNTIL] 1349Zone America/Caracas -4:27:44 - LMT 1890 1350 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1351 -4:30 - VET 1965 # Venezuela Time 1352 -4:00 - VET 2007 Dec 9 03:00 1353 -4:30 - VET
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