pike.git / lib / modules / Calendar.pmod / tzdata / southamerica

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pike.git/lib/modules/Calendar.pmod/tzdata/southamerica:1: - # <pre> +    # This file is in the public domain, so clarified as of   # 2009-05-17 by Arthur David Olson.    - # This data is by no means authoritative; if you think you know better, + # This file is by no means authoritative; if you think you know better,   # go ahead and edit the file (and please send any changes to - # tz@iana.org for general use in the future). + # tz@iana.org for general use in the future). For more, please see + # the file CONTRIBUTING in the tz distribution.    - # From Paul Eggert (2006-03-22): - # A good source for time zone historical data outside the U.S. is + # From Paul Eggert (2016-12-05): + # + # Unless otherwise specified, the source for data through 1990 is:   # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),   # San Diego: ACS Publications, Inc. (2003). -  + # Unfortunately this book contains many errors and cites no sources.   # - # For data circa 1899, a common source is: - # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 - # <http://www.jstor.org/stable/1774359>. - # - # Gwillim Law writes that a good source - # for recent time zone data is the International Air Transport + # Many years ago Gwillim Law wrote that a good source + # for time zone data was the International Air Transport   # Association's Standard Schedules Information Manual (IATA SSIM),   # published semiannually. Law sent in several helpful summaries - # of the IATA's data after 1990. + # of the IATA's data after 1990. Except where otherwise noted, + # IATA SSIM is the source for entries after 1990.   # - # Except where otherwise noted, Shanks & Pottenger is the source for - # entries through 1990, and IATA SSIM is the source for entries afterwards. + # For data circa 1899, a common source is: + # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. + # https://www.jstor.org/stable/1774359   # - # Earlier editions of these tables used the North American style (e.g. ARST and - # ARDT for Argentine Standard and Daylight Time), but the following quote - # suggests that it's better to use European style (e.g. ART and ARST). - # I suggest the use of _Summer time_ instead of the more cumbersome - # _daylight-saving time_. _Summer time_ seems to be in general use - # in Europe and South America. - # -- E O Cutler, _New York Times_ (1937-02-14), quoted in - # H L Mencken, _The American Language: Supplement I_ (1960), p 466 - # - # Earlier editions of these tables also used the North American style - # for time zones in Brazil, but this was incorrect, as Brazilians say - # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in - # the railroad sector, writes (1999-07-06): - # The subject of time zones is currently a matter of discussion/debate in - # Brazil. Let's say that "the Brasilia time" is considered the - # "official time" because Brasilia is the capital city. - # The other three time zones are called "Brasilia time "minus one" or - # "plus one" or "plus two". As far as I know there is no such - # name/designation as "Eastern Time" or "Central Time". - # So I invented the following (English-language) abbreviations for now. - # Corrections are welcome! - # std dst - # -2:00 FNT FNST Fernando de Noronha - # -3:00 BRT BRST Brasilia - # -4:00 AMT AMST Amazon - # -5:00 ACT ACST Acre + # These tables use numeric abbreviations like -03 and -0330 for + # integer hour and minute UT offsets. Although earlier editions used + # alphabetic time zone abbreviations, these abbreviations were + # invented and did not reflect common practice.      ###############################################################################      ###############################################################################      # Argentina      # From Bob Devine (1988-01-28):   # Argentina: first Sunday in October to first Sunday in April since 1976.   # Double Summer time from 1969 to 1974. Switches at midnight.    - # From U. S. Naval Observatory (1988-01-199): + # From U. S. Naval Observatory (1988-01-19):   # ARGENTINA 3 H BEHIND UTC      # From Hernan G. Otero (1995-06-26):   # I am sending modifications to the Argentine time zone table...   # AR was chosen because they are the ISO letters that represent Argentina.      # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Arg 1930 only - Dec 1 0:00 1:00 S + Rule Arg 1930 only - Dec 1 0:00 1:00 -   Rule Arg 1931 only - Apr 1 0:00 0 - - Rule Arg 1931 only - Oct 15 0:00 1:00 S + Rule Arg 1931 only - Oct 15 0:00 1:00 -   Rule Arg 1932 1940 - Mar 1 0:00 0 - - Rule Arg 1932 1939 - Nov 1 0:00 1:00 S - Rule Arg 1940 only - Jul 1 0:00 1:00 S + Rule Arg 1932 1939 - Nov 1 0:00 1:00 - + Rule Arg 1940 only - Jul 1 0:00 1:00 -   Rule Arg 1941 only - Jun 15 0:00 0 - - Rule Arg 1941 only - Oct 15 0:00 1:00 S + Rule Arg 1941 only - Oct 15 0:00 1:00 -   Rule Arg 1943 only - Aug 1 0:00 0 - - Rule Arg 1943 only - Oct 15 0:00 1:00 S + Rule Arg 1943 only - Oct 15 0:00 1:00 -   Rule Arg 1946 only - Mar 1 0:00 0 - - Rule Arg 1946 only - Oct 1 0:00 1:00 S + Rule Arg 1946 only - Oct 1 0:00 1:00 -   Rule Arg 1963 only - Oct 1 0:00 0 - - Rule Arg 1963 only - Dec 15 0:00 1:00 S + Rule Arg 1963 only - Dec 15 0:00 1:00 -   Rule Arg 1964 1966 - Mar 1 0:00 0 - - Rule Arg 1964 1966 - Oct 15 0:00 1:00 S + Rule Arg 1964 1966 - Oct 15 0:00 1:00 -   Rule Arg 1967 only - Apr 2 0:00 0 - - Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S + Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 -   Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - - Rule Arg 1974 only - Jan 23 0:00 1:00 S + Rule Arg 1974 only - Jan 23 0:00 1:00 -   Rule Arg 1974 only - May 1 0:00 0 - - Rule Arg 1988 only - Dec 1 0:00 1:00 S + Rule Arg 1988 only - Dec 1 0:00 1:00 -   #   # From Hernan G. Otero (1995-06-26):   # These corrections were contributed by InterSoft Argentina S.A.,   # obtaining the data from the: - # Talleres de Hidrografia Naval Argentina + # Talleres de Hidrografía Naval Argentina   # (Argentine Naval Hydrography Institute)   Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - - Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S + Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 -   #   # From Hernan G. Otero (1995-06-26):   # From this moment on, the law that mandated the daylight saving   # time corrections was derogated and no more modifications   # to the time zones (for daylight saving) are now made.   #   # From Rives McDow (2000-01-10):   # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,   # which did not result in the switch of a time zone, as they stayed 9 hours   # from the International Date Line. - Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S + Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 -   # From Paul Eggert (2007-12-28):   # DST was set to expire on March 5, not March 3, but since it was converted   # to standard time on March 3 it's more convenient for us to pretend that   # it ended on March 3.   Rule Arg 2000 only - Mar 3 0:00 0 -   #   # From Peter Gradelski via Steffen Thorsen (2000-03-01): - # We just checked with our Sao Paulo office and they say the government of + # We just checked with our São Paulo office and they say the government of   # Argentina decided not to become one of the countries that go on or off DST.   # So Buenos Aires should be -3 hours from GMT at all times.   # - # From Fabian L. Arce Jofre (2000-04-04): + # From Fabián L. Arce Jofré (2000-04-04):   # The law that claimed DST for Argentina was derogated by President Fernando - # de la Rua on March 2, 2000, because it would make people spend more energy + # de la Rúa on March 2, 2000, because it would make people spend more energy   # in the winter time, rather than less. The change took effect on March 3.   #   # From Mariano Absatz (2001-06-06):   # one of the major newspapers here in Argentina said that the 1999   # Timezone Law (which never was effectively applied) will (would?) be   # in effect.... The article is at   # http://ar.clarin.com/diario/2001-06-06/e-01701.htm - # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted + # ... The Law itself is "Ley No. 25155", sanctioned on 1999-08-25, enacted   # 1999-09-17, and published 1999-09-21. The official publication is at:   # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF   # Regretfully, you have to subscribe (and pay) for the on-line version....   #   # (2001-06-12):   # the timezone for Argentina will not change next Sunday.   # Apparently it will do so on Sunday 24th....   # http://ar.clarin.com/diario/2001-06-12/s-03501.htm   #   # (2001-06-25):
pike.git/lib/modules/Calendar.pmod/tzdata/southamerica:149:   # This kind of things had always been done this way in Argentina.   # We are still -03:00 all year round in all of the country.   #   # From Steffen Thorsen (2007-12-21):   # A user (Leonardo Chaim) reported that Argentina will adopt DST....   # all of the country (all Zone-entries) are affected. News reports like   # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate   # that Argentina will use DST next year as well, from October to   # March, although exact rules are not given.   # - # From Jesper Norgaard Welen (2007-12-26) + # From Jesper Nørgaard Welen (2007-12-26)   # The last hurdle of Argentina DST is over, the proposal was approved in - # the lower chamber too (Deputados) with a vote 192 for and 2 against. + # the lower chamber too (Diputados) with a vote 192 for and 2 against.   # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to   # the original scanned proposal, where the dates and the zero hours are   # clear and unambiguous...This is the article about final approval: - # <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> +    # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 - # </a> +    #   # From Paul Eggert (2007-12-22):   # For dates after mid-2008, the following rules are my guesses and   # are quite possibly wrong, but are more likely than no DST at all.      # From Alexander Krivenyshev (2008-09-05):   # As per message from Carlos Alberto Fonseca Arauz (Nicaragua),   # Argentina will start DST on Sunday October 19, 2008.   # - # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> +    # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html - # </a> - # OR - # <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> +    # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) - # </a> +     - # From Rodrigo Severo (2008-10-06): - # Here is some info available at a Gentoo bug related to TZ on Argentina's DST: - # ... - # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- - # Hi, there is a problem with timezone-data-2008e and maybe with - # timezone-data-2008f - # Argentinian law [Number] 25.155 is no longer valid. - # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> + # From Juan Manuel Docile in https://bugs.gentoo.org/240339 (2008-10-07) + # via Rodrigo Severo: + # Argentinian law No. 25.155 is no longer valid.   # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm - # </a> - # The new one is law [Number] 26.350 - # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> + # The new one is law No. 26.350   # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm - # </a> +    # So there is no summer time in Argentina for now.      # From Mariano Absatz (2008-10-20): - # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina - # From 2008-10-19 until 2009-03-15 - # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> + # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST + # in Argentina from 2008-10-19 until 2009-03-15.   # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 - # </a> +    # - # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: - # Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz - # and Tierra del Fuego - # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> +  + # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer + # 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La + # Pampa, Neuquén, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego   # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 - # </a> +    # - # Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying - # it will not apply DST either (even when it was not included in Decree 1705/2008) - # <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> + # Press release 235 dated Saturday October 18th, from the Government of the + # Province of Jujuy saying it will not apply DST either (even when it was not + # included in Decree 1705/2008).   # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc - # </a> +       # From fullinet (2009-10-18):   # As announced in - # <a hef="http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356"> +    # http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 - # </a> - # (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change") + # (an official .gob.ar) under title: "Sin Cambio de Hora" + # (English: "No hour change").   # - # "Por el momento, el Gobierno Nacional resolvio no modificar la hora - # oficial, decision que estaba en estudio para su implementacion el - # domingo 18 de octubre. Desde el Ministerio de Planificacion se anuncio - # que la Argentina hoy, en estas condiciones meteorologicas, no necesita - # la modificacion del huso horario, ya que 2009 nos encuentra con - # crecimiento en la produccion y distribucion energetica." + # "Por el momento, el Gobierno Nacional resolvió no modificar la hora + # oficial, decisión que estaba en estudio para su implementación el + # domingo 18 de octubre. Desde el Ministerio de Planificación se anunció + # que la Argentina hoy, en estas condiciones meteorológicas, no necesita + # la modificación del huso horario, ya que 2009 nos encuentra con + # crecimiento en la producción y distribución energética."    - Rule Arg 2007 only - Dec 30 0:00 1:00 S + Rule Arg 2007 only - Dec 30 0:00 1:00 -   Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - - Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S + Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 -      # From Mariano Absatz (2004-05-21):   # Today it was officially published that the Province of Mendoza is changing   # its timezone this winter... starting tomorrow night....   # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf   # From Paul Eggert (2004-05-24):   # It's Law No. 7,210. This change is due to a public power emergency, so for   # now we'll assume it's for this year only.   # - # From Paul Eggert (2006-03-22): - # <a href="http://www.spicasc.net/horvera.html"> - # Hora de verano para la Republica Argentina (2003-06-08) - # </a> says that standard time in Argentina from 1894-10-31 + # From Paul Eggert (2018-01-31): + # Hora de verano para la República Argentina + # http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html + # says that standard time in Argentina from 1894-10-31   # to 1920-05-01 was -4:16:48.25. Go with this more-precise value - # over Shanks & Pottenger. + # over Shanks & Pottenger. It is upward compatible with Milne, who + # says Córdoba time was -4:16:48.2. +    #   # From Mariano Absatz (2004-06-05):   # These media articles from a major newspaper mostly cover the current state:   # http://www.lanacion.com.ar/04/05/27/de_604825.asp   # http://www.lanacion.com.ar/04/05/28/de_605203.asp   #   # The following eight (8) provinces pulled clocks back to UTC-04:00 at   # midnight Monday May 31st. (that is, the night between 05/31 and 06/01).   # Apparently, all nine provinces would go back to UTC-03:00 at the same   # time in October 17th.   #   # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, - # Tierra del Fuego, Tucuman. + # Tierra del Fuego, Tucumán.   #   # From Mariano Absatz (2004-06-14): - # ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 + # ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00   # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's   # annoyance with the change is much higher than the power savings obtained....   #   # From Gwillim Law (2004-06-14):   # http://www.lanacion.com.ar/04/06/10/de_609078.asp ...   # "The time change in Tierra del Fuego was a conflicted decision from   # the start. The government had decreed that the measure would take   # effect on June 1, but a normative error forced the new time to begin   # three days earlier, from a Saturday to a Sunday....   # Our understanding was that the change was originally scheduled to take place
pike.git/lib/modules/Calendar.pmod/tzdata/southamerica:293:   # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00   # at midnight between Saturday, July 24th and Sunday, July 25th....   # http://www.sanjuan.gov.ar/prensa/archivo/000329.html   # http://www.sanjuan.gov.ar/prensa/archivo/000426.html   # http://www.sanjuan.gov.ar/prensa/archivo/000441.html      # From Alex Krivenyshev (2008-01-17):   # Here are articles that Argentina Province San Luis is planning to end DST   # as earlier as upcoming Monday January 21, 2008 or February 2008:   # - # Provincia argentina retrasa reloj y marca diferencia con resto del pais + # Provincia argentina retrasa reloj y marca diferencia con resto del país   # (Argentine Province delayed clock and mark difference with the rest of the   # country) - # <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> +    # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel - # </a> +    #   # Es inminente que en San Luis atrasen una hora los relojes   # (It is imminent in San Luis clocks one hour delay) - # <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> - # http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 - # </a> - # - # <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> - # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html - # </a> + # https://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html + # http://www.worldtimezone.com/dst_news/dst_news_argentina02.html    - # From Jesper Norgaard Welen (2008-01-18): + # From Jesper Nørgaard Welen (2008-01-18):   # The page of the San Luis provincial government - # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> +    # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 - # </a> +    # confirms what Alex Krivenyshev has earlier sent to the tz   # emailing list about that San Luis plans to return to standard   # time much earlier than the rest of the country. It also   # confirms that upon request the provinces San Juan and Mendoza   # refused to follow San Luis in this change.   # - # The change is supposed to take place Monday the 21.st at 0:00 + # The change is supposed to take place Monday the 21st at 0:00   # hours. As far as I understand it if this goes ahead, we need   # a new timezone for San Luis (although there are also documented   # independent changes in the southamerica file of San Luis in   # 1990 and 1991 which has not been confirmed).    - # From Jesper Norgaard Welen (2008-01-25): + # From Jesper Nørgaard Welen (2008-01-25):   # Unfortunately the below page has become defunct, about the San Luis   # time change. Perhaps because it now is part of a group of pages "Most   # important pages of 2008."   #   # You can use - # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> +    # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 - # </a> +    # instead it seems. Or use "Buscador" from the main page of the San Luis   # government, and fill in "huso" and click OK, and you will get 3 pages   # from which the first one is identical to the above.      # From Mariano Absatz (2008-01-28):   # I can confirm that the Province of San Luis (and so far only that   # province) decided to go back to UTC-3 effective midnight Jan 20th 2008   # (that is, Monday 21st at 0:00 is the time the clocks were delayed back   # 1 hour), and they intend to keep UTC-3 as their timezone all year round   # (that is, unless they change their mind any minute now).   #   # So we'll have to add yet another city to 'southamerica' (I think San   # Luis city is the mos populated city in the Province, so it'd be   # America/Argentina/San_Luis... of course I can't remember if San Luis's   # history of particular changes goes along with Mendoza or San Juan :-(   # (I only remember not being able to collect hard facts about San Luis   # back in 2004, when these provinces changed to UTC-4 for a few days, I   # mailed them personally and never got an answer).    - # From Paul Eggert (2008-06-30): - # Unless otherwise specified, data are from Shanks & Pottenger through 1992, - # from the IATA otherwise. As noted below, Shanks & Pottenger say that + # From Paul Eggert (2014-08-12): + # Unless otherwise specified, data entries are from Shanks & Pottenger through + # 1992, from the IATA otherwise. As noted below, Shanks & Pottenger say that   # America/Cordoba split into 6 subregions during 1991/1992, one of which   # was America/San_Luis, but we haven't verified this yet so for now we'll   # keep America/Cordoba a single region rather than splitting it into the   # other 5 subregions.      # From Mariano Absatz (2009-03-13):   # Yesterday (with our usual 2-day notice) the Province of San Luis   # decided that next Sunday instead of "staying" @utc-03:00 they will go   # to utc-04:00 until the second Saturday in October...   #   # The press release is at - # <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> +    # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 - # </a> - # (I couldn't find the decree, but - # <a href="http://www.sanluis.gov.ar"> - # www.sanluis.gov.ar - # <a/> - # is the official page for the Province Government). + # (I couldn't find the decree, but www.sanluis.gov.ar + # is the official page for the Province Government.)   #   # There's also a note in only one of the major national papers ...   # http://www.lanacion.com.ar/nota.asp?nota_id=1107912   #   # The press release says [quick and dirty translation]:   # ... announced that next Sunday, at 00:00, Puntanos (the San Luis   # inhabitants) will have to turn back one hour their clocks   #   # Since then, San Luis will establish its own Province timezone. Thus,   # during 2009, this timezone change will run from 00:00 the third Sunday   # in March until 24:00 of the second Saturday in October.      # From Mariano Absatz (2009-10-16):   # ...the Province of San Luis is a case in itself.   #   # The Law at - # <a href="http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276>" +    # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 - # </a> +    # is ambiguous because establishes a calendar from the 2nd Sunday in   # October at 0:00 thru the 2nd Saturday in March at 24:00 and the   # complement of that starting on the 2nd Sunday of March at 0:00 and   # ending on the 2nd Saturday of March at 24:00.   #   # This clearly breaks every time the 1st of March or October is a Sunday.   #   # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd   # Sunday of October and March.   #   # The problem is that the changes in the rest of the Provinces that did   # change in 2007/2008, were made according to the Federal Law and Decrees   # that did so on the 3rd Sunday of October and March.   #   # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday   # (October 11th) at 0:00.   #   # So I guess a new set of rules, besides "Arg", must be made and the last   # America/Argentina/San_Luis entries should change to use these... - # - # I'm enclosing a patch that does what I say... regretfully, the San Luis - # timezone must be called "WART/WARST" even when most of the time (like, - # right now) WARST == ART... that is, since last Sunday, all the country - # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest - # of the country calls it "ART". +    # ...      # From Alexander Krivenyshev (2010-04-09): - # According to news reports from El Diario de la Republica Province San + # According to news reports from El Diario de la República Province San   # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time - # after April 11, 2010--will continue to have same time as rest of + # after April 11, 2010 - will continue to have same time as rest of   # Argentina (UTC-3) (no DST).   # - # Confirmaron la pr&oacute;rroga del huso horario de verano (Spanish) - # <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9"> + # Confirmaron la prórroga del huso horario de verano (Spanish)   # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 - # </a> +    # or (some English translation): - # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html"> +    # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html - # </a> +       # From Mariano Absatz (2010-04-12):   # yes...I can confirm this...and given that San Luis keeps calling   # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"   # rules...San Luis is still using "Western ARgentina Time" and it got   # stuck on Summer daylight savings time even though the summer is over.    - # From Paul Eggert (2013-09-05): - # Perhaps San Luis operates on the legal fiction that it is at UTC-4 - # with perpetual summer time, but ordinary usage typically seems to - # just say it's at UTC-3; see, for example, - # <http://es.wikipedia.org/wiki/Hora_oficial_argentina>. + # From Paul Eggert (2018-01-23): + # Perhaps San Luis operates on the legal fiction that it is at -04 + # with perpetual daylight saving time, but ordinary usage typically seems to + # just say it's at -03; see, for example, + # https://es.wikipedia.org/wiki/Hora_oficial_argentina   # We've documented similar situations as being plain changes to   # standard time, so let's do that here too. This does not change UTC   # offsets, only tm_isdst and the time zone abbreviations. One minor   # plus is that this silences a zic complaint that there's no POSIX TZ   # setting for time stamps past 2038.    - # From Paul Eggert (2013-02-21): - # Milne says Cordoba time was -4:16:48.2. Round to the nearest second. -  +    # Zone NAME GMTOFF RULES FORMAT [UNTIL]   #   # Buenos Aires (BA), Capital Federal (CF), - Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 -  -4:16:48 - CMT 1920 May # Cordoba Mean Time -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 Arg AR%sT + Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 +  -4:16:48 - CMT 1920 May # Córdoba Mean Time +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 Arg -03/-02   # - # Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), + # Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),   # Chaco (CC), Formosa (FM), Santiago del Estero (SE)   #   # Shanks & Pottenger also make the following claims, which we haven't verified:   # - Formosa switched to -3:00 on 1991-01-07.   # - Misiones switched to -3:00 on 1990-12-29.   # - Chaco switched to -3:00 on 1991-01-04.   # - Santiago del Estero switched to -4:00 on 1991-04-01,   # then to -3:00 on 1991-04-26.   #   Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1991 Mar 3 -  -4:00 - WART 1991 Oct 20 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 Arg AR%sT +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1991 Mar 3 +  -4:00 - -04 1991 Oct 20 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 Arg -03/-02   # - # Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) + # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)   Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1991 Mar 3 -  -4:00 - WART 1991 Oct 20 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1991 Mar 3 +  -4:00 - -04 1991 Oct 20 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03   # - # Tucuman (TM) + # Tucumán (TM)   Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1991 Mar 3 -  -4:00 - WART 1991 Oct 20 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 - ART 2004 Jun 1 -  -4:00 - WART 2004 Jun 13 -  -3:00 Arg AR%sT +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1991 Mar 3 +  -4:00 - -04 1991 Oct 20 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 - -03 2004 Jun 1 +  -4:00 - -04 2004 Jun 13 +  -3:00 Arg -03/-02   #   # La Rioja (LR)   Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1991 Mar 1 -  -4:00 - WART 1991 May 7 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 - ART 2004 Jun 1 -  -4:00 - WART 2004 Jun 20 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1991 Mar 1 +  -4:00 - -04 1991 May 7 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 - -03 2004 Jun 1 +  -4:00 - -04 2004 Jun 20 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03   #   # San Juan (SJ)   Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1991 Mar 1 -  -4:00 - WART 1991 May 7 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 - ART 2004 May 31 -  -4:00 - WART 2004 Jul 25 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1991 Mar 1 +  -4:00 - -04 1991 May 7 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 - -03 2004 May 31 +  -4:00 - -04 2004 Jul 25 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03   #   # Jujuy (JY)   Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1990 Mar 4 -  -4:00 - WART 1990 Oct 28 -  -4:00 1:00 WARST 1991 Mar 17 -  -4:00 - WART 1991 Oct 6 -  -3:00 1:00 ARST 1992 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1990 Mar 4 +  -4:00 - -04 1990 Oct 28 +  -4:00 1:00 -03 1991 Mar 17 +  -4:00 - -04 1991 Oct 6 +  -3:00 1:00 -02 1992 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03   #   # Catamarca (CT), Chubut (CH)   Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1991 Mar 3 -  -4:00 - WART 1991 Oct 20 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 - ART 2004 Jun 1 -  -4:00 - WART 2004 Jun 20 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1991 Mar 3 +  -4:00 - -04 1991 Oct 20 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 - -03 2004 Jun 1 +  -4:00 - -04 2004 Jun 20 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03   #   # Mendoza (MZ)   Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1990 Mar 4 -  -4:00 - WART 1990 Oct 15 -  -4:00 1:00 WARST 1991 Mar 1 -  -4:00 - WART 1991 Oct 15 -  -4:00 1:00 WARST 1992 Mar 1 -  -4:00 - WART 1992 Oct 18 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 - ART 2004 May 23 -  -4:00 - WART 2004 Sep 26 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1990 Mar 4 +  -4:00 - -04 1990 Oct 15 +  -4:00 1:00 -03 1991 Mar 1 +  -4:00 - -04 1991 Oct 15 +  -4:00 1:00 -03 1992 Mar 1 +  -4:00 - -04 1992 Oct 18 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 - -03 2004 May 23 +  -4:00 - -04 2004 Sep 26 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03   #   # San Luis (SL)      Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - - Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S + Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 -      Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31    -4:16:48 - CMT 1920 May -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1990 -  -3:00 1:00 ARST 1990 Mar 14 -  -4:00 - WART 1990 Oct 15 -  -4:00 1:00 WARST 1991 Mar 1 -  -4:00 - WART 1991 Jun 1 -  -3:00 - ART 1999 Oct 3 -  -4:00 1:00 WARST 2000 Mar 3 -  -3:00 - ART 2004 May 31 -  -4:00 - WART 2004 Jul 25 -  -3:00 Arg AR%sT 2008 Jan 21 -  -4:00 SanLuis WAR%sT 2009 Oct 11 -  -3:00 - ART +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1990 +  -3:00 1:00 -02 1990 Mar 14 +  -4:00 - -04 1990 Oct 15 +  -4:00 1:00 -03 1991 Mar 1 +  -4:00 - -04 1991 Jun 1 +  -3:00 - -03 1999 Oct 3 +  -4:00 1:00 -03 2000 Mar 3 +  -3:00 - -03 2004 May 31 +  -4:00 - -04 2004 Jul 25 +  -3:00 Arg -03/-02 2008 Jan 21 +  -4:00 SanLuis -04/-03 2009 Oct 11 +  -3:00 - -03   #   # Santa Cruz (SC) - Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 -  -4:16:48 - CMT 1920 May # Cordoba Mean Time -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 - ART 2004 Jun 1 -  -4:00 - WART 2004 Jun 20 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART + Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 +  -4:16:48 - CMT 1920 May +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 - -03 2004 Jun 1 +  -4:00 - -04 2004 Jun 20 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03   # - # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) - Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 -  -4:16:48 - CMT 1920 May # Cordoba Mean Time -  -4:00 - ART 1930 Dec -  -4:00 Arg AR%sT 1969 Oct 5 -  -3:00 Arg AR%sT 1999 Oct 3 -  -4:00 Arg AR%sT 2000 Mar 3 -  -3:00 - ART 2004 May 30 -  -4:00 - WART 2004 Jun 20 -  -3:00 Arg AR%sT 2008 Oct 18 -  -3:00 - ART + # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) + Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 +  -4:16:48 - CMT 1920 May +  -4:00 - -04 1930 Dec +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1999 Oct 3 +  -4:00 Arg -04/-03 2000 Mar 3 +  -3:00 - -03 2004 May 30 +  -4:00 - -04 2004 Jun 20 +  -3:00 Arg -03/-02 2008 Oct 18 +  -3:00 - -03      # Aruba   Link America/Curacao America/Aruba      # Bolivia   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/La_Paz -4:32:36 - LMT 1890    -4:32:36 - CMT 1931 Oct 15 # Calamarca MT -  -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST -  -4:00 - BOT # Bolivia Time +  -4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST +  -4:00 - -04      # Brazil      # From Paul Eggert (1993-11-18):   # The mayor of Rio recently attempted to change the time zone rules   # just in his city, in order to leave more summer time for the tourist trade.   # The rule change lasted only part of the day;   # the federal government refused to follow the city's rules, and business   # was in a chaos, so the mayor backed down that afternoon.      # From IATA SSIM (1996-02):   # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), - # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), - # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), + # Santa Catarina (SC), Paraná (PR), São Paulo (SP), Rio de Janeiro (RJ), + # Espírito Santo (ES), Minas Gerais (MG), Bahia (BA), Goiás (GO),   # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL].   # [The last three states are new to this issue of the IATA SSIM.]      # From Gwillim Law (1996-10-07): - # Geography, history (Tocantins was part of Goias until 1989), and other + # Geography, history (Tocantins was part of Goiás until 1989), and other   # sources of time zone information lead me to believe that AL, SE, and TO were   # always in BR1, and so the only change was whether or not they observed DST....   # The earliest issue of the SSIM I have is 2/91. Each issue from then until   # 9/95 says that DST is observed only in the ten states I quoted from 9/95,   # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2   # (UTC-4).... The other two time zones given for Brazil are BR3, which is   # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is   # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's   # become part of the state of Pernambuco). The boundary between BR1 and BR2   # has never been clearly stated. They've simply been called East and West.   # However, some conclusions can be drawn from another IATA manual: the Airline   # Coding Directory, which lists close to 400 airports in Brazil. For each   # airport it gives a time zone which is coded to the SSIM. From that - # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), - # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do - # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. + # information, I'm led to conclude that the states of Amapá (AP), Ceará (CE), + # Maranhão (MA), Paraíba (PR), Pernambuco (PE), Piauí (PI), and Rio Grande do + # Norte (RN), and the eastern part of Pará (PA) are all in BR1 without DST.      # From Marcos Tadeu (1998-09-27): - # <a href="http://pcdsh01.on.br/verao1.html"> - # Brazilian official page - # </a> + # Brazilian official page <http://pcdsh01.on.br/verao1.html>    - # From Jesper Norgaard (2000-11-03): + # From Jesper Nørgaard (2000-11-03):   # [For an official list of which regions in Brazil use which time zones, see:]   # http://pcdsh01.on.br/Fusbr.htm   # http://pcdsh01.on.br/Fusbrhv.htm      # From Celso Doria via David Madeo (2002-10-09):   # The reason for the delay this year has to do with elections in Brazil.   #   # Unlike in the United States, elections in Brazil are 100% computerized and   # the results are known almost immediately. Yesterday, it was the first   # round of the elections when 115 million Brazilians voted for President,
pike.git/lib/modules/Calendar.pmod/tzdata/southamerica:718:   # It's just the biannual change made necessary by the much hyped, supposedly   # modern Brazilian eletronic voting machines which, apparently, can't deal   # with a time change between the first and the second rounds of the elections.      # From Steffen Thorsen (2007-09-20):   # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00:   # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975      # From Paul Schulze (2008-06-24):   # ...by law number 11.662 of April 24, 2008 (published in the "Diario - # Oficial da Uniao"...) in Brazil there are changes in the timezones, + # Oficial da União"...) in Brazil there are changes in the timezones,   # effective today (00:00am at June 24, 2008) as follows:   # - # a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the + # a) The timezone UTC+5 is extinguished, with all the Acre state and the   # part of the Amazonas state that had this timezone now being put to the   # timezone UTC+4 - # b) The whole Para state now is put at timezone UTC+3, instead of just + # b) The whole Pará state now is put at timezone UTC+3, instead of just   # part of it, as was before.   #   # This change follows a proposal of senator Tiao Viana of Acre state, that   # proposed it due to concerns about open television channels displaying   # programs inappropriate to youths in the states that had the timezone   # UTC+5 too early in the night. In the occasion, some more corrections   # were proposed, trying to unify the timezones of any given state. This   # change modifies timezone rules defined in decree 2.784 of 18 June,   # 1913.      # From Rodrigo Severo (2008-06-24):   # Just correcting the URL: - # <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> +    # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 - # </a> +    #   # As a result of the above Decree I believe the America/Rio_Branco   # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall - # be created to represent the...west side of the Para State. I + # be created to represent the...west side of the Pará State. I   # suggest this new timezone be called Santarem as the most   # important/populated city in the affected area.   #   # This new timezone would be the same as the Rio_Branco timezone up to   # the 2008/06/24 change which would be to UTC-3 instead of UTC-4.      # From Alex Krivenyshev (2008-06-24):   # This is a quick reference page for New and Old Brazil Time Zones map. - # <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> +    # http://www.worldtimezone.com/brazil-time-new-old.php - # </a> +    # - # - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 - # (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western - # part of Par state is moving to one timezone UTC- 03 (from UTC -04). + # - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05 + # (state Acre and the part of the Amazonas will be UTC/GMT-04) - western + # part of Par state is moving to one timezone UTC-03 (from UTC-04).      # From Paul Eggert (2002-10-10):   # The official decrees referenced below are mostly taken from - # <a href="http://pcdsh01.on.br/DecHV.html"> - # Decretos sobre o Horario de Verao no Brasil - # </a>. + # Decretos sobre o Horário de Verão no Brasil. + # http://pcdsh01.on.br/DecHV.html      # From Steffen Thorsen (2008-08-29):   # As announced by the government and many newspapers in Brazil late   # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and   # it will end on 2009-02-15 (current rule for Brazil is fine). Based on   # past years experience with the elections, there was a good chance that   # the start was postponed to November, but it did not happen this year.   #   # It has not yet been posted to http://pcdsh01.on.br/DecHV.html   #   # An official page about it: - # <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> +    # http://www.mme.gov.br/site/news/detail.do?newsId=16722 - # </a> +    # Note that this link does not always work directly, but must be accessed   # by going to - # <a href="http://www.mme.gov.br/first"> +    # http://www.mme.gov.br/first - # </a> +    #   # One example link that works directly: - # <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> +    # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54   # (Portuguese) - # </a> +    #   # We have a written a short article about it as well: - # <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> - # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html - # </a> + # https://www.timeanddate.com/news/time/brazil-dst-2008-2009.html   #   # From Alexander Krivenyshev (2011-10-04):   # State Bahia will return to Daylight savings time this year after 8 years off.   # The announcement was made by Governor Jaques Wagner in an interview to a   # television station in Salvador.      # In Portuguese: - # <a href="http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html"> +    # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html - # </a> and - # <a href="http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html"> - # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html - # </a> + # https://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html      # From Guilherme Bernardes Rodrigues (2011-10-07):   # There is news in the media, however there is still no decree about it. - # I just send a e-mail to Zulmira Brandao at - # <a href="http://pcdsh01.on.br/">http://pcdsh01.on.br/</a> the + # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the   # official agency about time in Brazil, and she confirmed that the old rule is   # still in force.      # From Guilherme Bernardes Rodrigues (2011-10-14)   # It's official, the President signed a decree that includes Bahia in summer   # time.   # [ and in a second message (same day): ]   # I found the decree.   # - # DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011 + # DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011   # Link : - # <a href="http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6"> +    # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 - # </a> +       # From Kelley Cook (2012-10-16):   # The governor of state of Bahia in Brazil announced on Thursday that   # due to public pressure, he is reversing the DST policy they implemented   # last year and will not be going to Summer Time on October 21st....   # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia      # From Rodrigo Severo (2012-10-16):   # Tocantins state will have DST. - # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html + # https://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html      # From Steffen Thorsen (2013-09-20):   # Tocantins in Brazil is very likely not to observe DST from October....   # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto   # We will keep this article updated when this is confirmed: - # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html + # https://www.timeanddate.com/news/time/brazil-starts-dst-2013.html      # From Steffen Thorsen (2013-10-17): - # http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html + # https://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html   # Senator Jorge Viana announced that Acre will change time zone on November 10.   # He did not specify the time of the change, nor if western parts of Amazonas   # will change as well.   #   # From Paul Eggert (2013-10-17):   # For now, assume western Amazonas will change as well.      # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) - # Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) - Rule Brazil 1931 only - Oct 3 11:00 1:00 S + # Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01) + # Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10) + Rule Brazil 1931 only - Oct 3 11:00 1:00 -   Rule Brazil 1932 1933 - Apr 1 0:00 0 - - Rule Brazil 1932 only - Oct 3 0:00 1:00 S - # Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) + Rule Brazil 1932 only - Oct 3 0:00 1:00 - + # Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)   # revoked DST. - # Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) - # Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) - Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S + # Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24) + # Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13) + Rule Brazil 1949 1952 - Dec 1 0:00 1:00 -   Rule Brazil 1950 only - Apr 16 1:00 0 -   Rule Brazil 1951 1952 - Apr 1 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) + # Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24)   Rule Brazil 1953 only - Mar 1 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) + # Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30)   # revoked DST. - # Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) + # Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18)   # established DST from 1963-10-23 00:00 to 1964-02-29 00:00   # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. - # Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) + # Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03)   # extended the above decree to all of the national territory on 12-09. - Rule Brazil 1963 only - Dec 9 0:00 1:00 S - # Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) + Rule Brazil 1963 only - Dec 9 0:00 1:00 - + # Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25)   # extended summer time by one day to 1964-03-01 00:00 (start of school).   Rule Brazil 1964 only - Mar 1 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) - Rule Brazil 1965 only - Jan 31 0:00 1:00 S + # Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27) + Rule Brazil 1965 only - Jan 31 0:00 1:00 -   Rule Brazil 1965 only - Mar 31 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) - Rule Brazil 1965 only - Dec 1 0:00 1:00 S - # Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) + # Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22) + Rule Brazil 1965 only - Dec 1 0:00 1:00 - + # Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18)   Rule Brazil 1966 1968 - Mar 1 0:00 0 - - Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S - # Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) + Rule Brazil 1966 1967 - Nov 1 0:00 1:00 - + # Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15)   # revoked DST. - # Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) - Rule Brazil 1985 only - Nov 2 0:00 1:00 S + # Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27) + Rule Brazil 1985 only - Nov 2 0:00 1:00 -   # Decree 92,310 (1986-01-21)   # Decree 92,463 (1986-03-13)   Rule Brazil 1986 only - Mar 15 0:00 0 -   # Decree 93,316 (1986-10-01) - Rule Brazil 1986 only - Oct 25 0:00 1:00 S + Rule Brazil 1986 only - Oct 25 0:00 1:00 -   Rule Brazil 1987 only - Feb 14 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) - Rule Brazil 1987 only - Oct 25 0:00 1:00 S + # Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22) + Rule Brazil 1987 only - Oct 25 0:00 1:00 -   Rule Brazil 1988 only - Feb 7 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) + # Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12)   # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) - Rule Brazil 1988 only - Oct 16 0:00 1:00 S + Rule Brazil 1988 only - Oct 16 0:00 1:00 -   Rule Brazil 1989 only - Jan 29 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) + # Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21)   # with the same exceptions - Rule Brazil 1989 only - Oct 15 0:00 1:00 S + Rule Brazil 1989 only - Oct 15 0:00 1:00 -   Rule Brazil 1990 only - Feb 11 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) + # Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17)   # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF.   # Decree 99,629 (1990-10-19) adds BA, MT. - Rule Brazil 1990 only - Oct 21 0:00 1:00 S + Rule Brazil 1990 only - Oct 21 0:00 1:00 -   Rule Brazil 1991 only - Feb 17 0:00 0 - - # <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) + # Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25)   # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. - Rule Brazil 1991 only - Oct 20 0:00 1:00 S + Rule Brazil 1991 only - Oct 20 0:00 1:00 -   Rule Brazil 1992 only - Feb 9 0:00 0 - - # <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) + # Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16)   # adopted by same states. - Rule Brazil 1992 only - Oct 25 0:00 1:00 S + Rule Brazil 1992 only - Oct 25 0:00 1:00 -   Rule Brazil 1993 only - Jan 31 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) + # Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28)   # adopted by same states, plus AM. - # Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; + # Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22;   # web page corrected 2004-01-07) adopted by same states, minus AM. - # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) + # Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14)   # adopted by same states, plus MT and TO. - # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) + # Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13)   # adds AL, SE. - Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S + Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 -   Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 -   Rule Brazil 1996 only - Feb 11 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) + # Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04)   # adopted by same states, minus AL, SE. - Rule Brazil 1996 only - Oct 6 0:00 1:00 S + Rule Brazil 1996 only - Oct 6 0:00 1:00 -   Rule Brazil 1997 only - Feb 16 0:00 0 -   # From Daniel C. Sobral (1998-02-12):   # In 1997, the DS began on October 6. The stated reason was that   # because international television networks ignored Brazil's policy on DS,   # they bought the wrong times on satellite for coverage of Pope's visit.   # This year, the ending date of DS was postponed to March 1   # to help dealing with the shortages of electric power.   #   # Decree 2,317 (1997-09-04), adopted by same states. - Rule Brazil 1997 only - Oct 6 0:00 1:00 S - # Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> + Rule Brazil 1997 only - Oct 6 0:00 1:00 - + # Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG>   # (1998-02-10)   Rule Brazil 1998 only - Mar 1 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) + # Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11)   # adopted by the same states as before. - Rule Brazil 1998 only - Oct 11 0:00 1:00 S + Rule Brazil 1998 only - Oct 11 0:00 1:00 -   Rule Brazil 1999 only - Feb 21 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> + # Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif>   # (1999-08-23) adopted by same states. - # Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) + # Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30)   # adds SE, AL, PB, PE, RN, CE, PI, MA and RR. - Rule Brazil 1999 only - Oct 3 0:00 1:00 S + Rule Brazil 1999 only - Oct 3 0:00 1:00 -   Rule Brazil 2000 only - Feb 27 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) + # Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06)   # adopted by the same states as before. - # Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) + # Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13)   # repeals DST in PE and RR, effective 2000-10-15 00:00. - # Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) + # Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17)   # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. - # Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> + # Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif>   # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. - Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S + Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 -   Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 -   # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. - # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> - Rule Brazil 2002 only - Nov 3 0:00 1:00 S + # 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm> + Rule Brazil 2002 only - Nov 3 0:00 1:00 -   # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. - # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> - Rule Brazil 2003 only - Oct 19 0:00 1:00 S + # 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm> + Rule Brazil 2003 only - Oct 19 0:00 1:00 -   # Decree 5,223 (2004-10-01) reestablishes DST in MT. - # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> - Rule Brazil 2004 only - Nov 2 0:00 1:00 S - # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), + # 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm> + Rule Brazil 2004 only - Nov 2 0:00 1:00 - + # Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19),   # adopted by the same states as before. - Rule Brazil 2005 only - Oct 16 0:00 1:00 S - # Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), + Rule Brazil 2005 only - Oct 16 0:00 1:00 - + # Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03),   # adopted by the same states as before. - Rule Brazil 2006 only - Nov 5 0:00 1:00 S + Rule Brazil 2006 only - Nov 5 0:00 1:00 -   Rule Brazil 2007 only - Feb 25 0:00 0 - - # Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), + # Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26),   # adopted by the same states as before. - Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S + Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 -   # From Frederico A. C. Neves (2008-09-10):   # According to this decree - # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> +    # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm - # </a> +    # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the   # 3rd Feb Sunday. There is an exception on the return date when this is   # the Carnival Sunday then the return date will be the next Sunday... - Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S + Rule Brazil 2008 2017 - Oct Sun>=15 0:00 1:00 -   Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - -  + # Decree 7,584 <http://pcdsh01.on.br/HVdecreto7584_20111013.jpg> (2011-10-13) + # added Bahia.   Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - -  + # Decree 7,826 <http://pcdsh01.on.br/HVdecreto7826_20121015.jpg> (2012-10-15) + # removed Bahia and added Tocantins. + # Decree 8,112 <http://pcdsh01.on.br/HVdecreto8112_20130930.JPG> (2013-09-30) + # removed Tocantins.   Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 -   Rule Brazil 2015 only - Feb Sun>=22 0:00 0 -   Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - -  + # From Steffen Thorsen (2017-12-18): + # According to many media sources, next year's DST start in Brazil will move to + # the first Sunday of November, and it will stay like that for the years after. + # ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html + # From Steffen Thorsen (2017-12-20): + # http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm + Rule Brazil 2018 max - Nov Sun>=1 0:00 1:00 -   Rule Brazil 2023 only - Feb Sun>=22 0:00 0 -   Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 -   Rule Brazil 2026 only - Feb Sun>=22 0:00 0 -   Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 -   Rule Brazil 2034 only - Feb Sun>=22 0:00 0 -   Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 -   Rule Brazil 2037 only - Feb Sun>=22 0:00 0 -   # From Arthur David Olson (2008-09-29):   # The next is wrong in some years but is better than nothing.   Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -      # The latest ruleset listed above says that the following states observe DST:   # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP.      # Zone NAME GMTOFF RULES FORMAT [UNTIL]   #   # Fernando de Noronha (administratively part of PE)   Zone America/Noronha -2:09:40 - LMT 1914 -  -2:00 Brazil FN%sT 1990 Sep 17 -  -2:00 - FNT 1999 Sep 30 -  -2:00 Brazil FN%sT 2000 Oct 15 -  -2:00 - FNT 2001 Sep 13 -  -2:00 Brazil FN%sT 2002 Oct 1 -  -2:00 - FNT +  -2:00 Brazil -02/-01 1990 Sep 17 +  -2:00 - -02 1999 Sep 30 +  -2:00 Brazil -02/-01 2000 Oct 15 +  -2:00 - -02 2001 Sep 13 +  -2:00 Brazil -02/-01 2002 Oct 1 +  -2:00 - -02   # Other Atlantic islands have no permanent settlement. - # These include Trindade and Martin Vaz (administratively part of ES), - # Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (PE). + # These include Trindade and Martim Vaz (administratively part of ES), + # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).   # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01;   # it also included the Penedos.   # - # Amapa (AP), east Para (PA) - # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. - # The division between east and west Para is the river Xingu. + # Amapá (AP), east Pará (PA) + # East Pará includes Belém, Marabá, Serra Norte, and São Félix do Xingu. + # The division between east and west Pará is the river Xingu.   # In the north a very small part from the river Javary (now Jari I guess, - # the border with Amapa) to the Amazon, then to the Xingu. + # the border with Amapá) to the Amazon, then to the Xingu.   Zone America/Belem -3:13:56 - LMT 1914 -  -3:00 Brazil BR%sT 1988 Sep 12 -  -3:00 - BRT +  -3:00 Brazil -03/-02 1988 Sep 12 +  -3:00 - -03   # - # west Para (PA) - # West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. + # west Pará (PA) + # West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.   Zone America/Santarem -3:38:48 - LMT 1914 -  -4:00 Brazil AM%sT 1988 Sep 12 -  -4:00 - AMT 2008 Jun 24 00:00 -  -3:00 - BRT +  -4:00 Brazil -04/-03 1988 Sep 12 +  -4:00 - -04 2008 Jun 24 0:00 +  -3:00 - -03   # - # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), - # Paraiba (PB) + # Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN), + # Paraíba (PB)   Zone America/Fortaleza -2:34:00 - LMT 1914 -  -3:00 Brazil BR%sT 1990 Sep 17 -  -3:00 - BRT 1999 Sep 30 -  -3:00 Brazil BR%sT 2000 Oct 22 -  -3:00 - BRT 2001 Sep 13 -  -3:00 Brazil BR%sT 2002 Oct 1 -  -3:00 - BRT +  -3:00 Brazil -03/-02 1990 Sep 17 +  -3:00 - -03 1999 Sep 30 +  -3:00 Brazil -03/-02 2000 Oct 22 +  -3:00 - -03 2001 Sep 13 +  -3:00 Brazil -03/-02 2002 Oct 1 +  -3:00 - -03   #   # Pernambuco (PE) (except Atlantic islands)   Zone America/Recife -2:19:36 - LMT 1914 -  -3:00 Brazil BR%sT 1990 Sep 17 -  -3:00 - BRT 1999 Sep 30 -  -3:00 Brazil BR%sT 2000 Oct 15 -  -3:00 - BRT 2001 Sep 13 -  -3:00 Brazil BR%sT 2002 Oct 1 -  -3:00 - BRT +  -3:00 Brazil -03/-02 1990 Sep 17 +  -3:00 - -03 1999 Sep 30 +  -3:00 Brazil -03/-02 2000 Oct 15 +  -3:00 - -03 2001 Sep 13 +  -3:00 Brazil -03/-02 2002 Oct 1 +  -3:00 - -03   #   # Tocantins (TO)   Zone America/Araguaina -3:12:48 - LMT 1914 -  -3:00 Brazil BR%sT 1990 Sep 17 -  -3:00 - BRT 1995 Sep 14 -  -3:00 Brazil BR%sT 2003 Sep 24 -  -3:00 - BRT 2012 Oct 21 -  -3:00 Brazil BR%sT 2013 Sep -  -3:00 - BRT +  -3:00 Brazil -03/-02 1990 Sep 17 +  -3:00 - -03 1995 Sep 14 +  -3:00 Brazil -03/-02 2003 Sep 24 +  -3:00 - -03 2012 Oct 21 +  -3:00 Brazil -03/-02 2013 Sep +  -3:00 - -03   #   # Alagoas (AL), Sergipe (SE)   Zone America/Maceio -2:22:52 - LMT 1914 -  -3:00 Brazil BR%sT 1990 Sep 17 -  -3:00 - BRT 1995 Oct 13 -  -3:00 Brazil BR%sT 1996 Sep 4 -  -3:00 - BRT 1999 Sep 30 -  -3:00 Brazil BR%sT 2000 Oct 22 -  -3:00 - BRT 2001 Sep 13 -  -3:00 Brazil BR%sT 2002 Oct 1 -  -3:00 - BRT +  -3:00 Brazil -03/-02 1990 Sep 17 +  -3:00 - -03 1995 Oct 13 +  -3:00 Brazil -03/-02 1996 Sep 4 +  -3:00 - -03 1999 Sep 30 +  -3:00 Brazil -03/-02 2000 Oct 22 +  -3:00 - -03 2001 Sep 13 +  -3:00 Brazil -03/-02 2002 Oct 1 +  -3:00 - -03   #   # Bahia (BA)   # There are too many Salvadors elsewhere, so use America/Bahia instead   # of America/Salvador.   Zone America/Bahia -2:34:04 - LMT 1914 -  -3:00 Brazil BR%sT 2003 Sep 24 -  -3:00 - BRT 2011 Oct 16 -  -3:00 Brazil BR%sT 2012 Oct 21 -  -3:00 - BRT +  -3:00 Brazil -03/-02 2003 Sep 24 +  -3:00 - -03 2011 Oct 16 +  -3:00 Brazil -03/-02 2012 Oct 21 +  -3:00 - -03   # - # Goias (GO), Distrito Federal (DF), Minas Gerais (MG), - # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), + # Goiás (GO), Distrito Federal (DF), Minas Gerais (MG), + # Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),   # Santa Catarina (SC), Rio Grande do Sul (RS)   Zone America/Sao_Paulo -3:06:28 - LMT 1914 -  -3:00 Brazil BR%sT 1963 Oct 23 00:00 -  -3:00 1:00 BRST 1964 -  -3:00 Brazil BR%sT +  -3:00 Brazil -03/-02 1963 Oct 23 0:00 +  -3:00 1:00 -02 1964 +  -3:00 Brazil -03/-02   #   # Mato Grosso do Sul (MS)   Zone America/Campo_Grande -3:38:28 - LMT 1914 -  -4:00 Brazil AM%sT +  -4:00 Brazil -04/-03   #   # Mato Grosso (MT)   Zone America/Cuiaba -3:44:20 - LMT 1914 -  -4:00 Brazil AM%sT 2003 Sep 24 -  -4:00 - AMT 2004 Oct 1 -  -4:00 Brazil AM%sT +  -4:00 Brazil -04/-03 2003 Sep 24 +  -4:00 - -04 2004 Oct 1 +  -4:00 Brazil -04/-03   # - # Rondonia (RO) + # Rondônia (RO)   Zone America/Porto_Velho -4:15:36 - LMT 1914 -  -4:00 Brazil AM%sT 1988 Sep 12 -  -4:00 - AMT +  -4:00 Brazil -04/-03 1988 Sep 12 +  -4:00 - -04   #   # Roraima (RR)   Zone America/Boa_Vista -4:02:40 - LMT 1914 -  -4:00 Brazil AM%sT 1988 Sep 12 -  -4:00 - AMT 1999 Sep 30 -  -4:00 Brazil AM%sT 2000 Oct 15 -  -4:00 - AMT +  -4:00 Brazil -04/-03 1988 Sep 12 +  -4:00 - -04 1999 Sep 30 +  -4:00 Brazil -04/-03 2000 Oct 15 +  -4:00 - -04   # - # east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto + # east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto   # The great circle line from Tabatinga to Porto Acre divides   # east from west Amazonas.   Zone America/Manaus -4:00:04 - LMT 1914 -  -4:00 Brazil AM%sT 1988 Sep 12 -  -4:00 - AMT 1993 Sep 28 -  -4:00 Brazil AM%sT 1994 Sep 22 -  -4:00 - AMT +  -4:00 Brazil -04/-03 1988 Sep 12 +  -4:00 - -04 1993 Sep 28 +  -4:00 Brazil -04/-03 1994 Sep 22 +  -4:00 - -04   #   # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, - # Eirunepe, Envira, Ipixuna + # Eirunepé, Envira, Ipixuna   Zone America/Eirunepe -4:39:28 - LMT 1914 -  -5:00 Brazil AC%sT 1988 Sep 12 -  -5:00 - ACT 1993 Sep 28 -  -5:00 Brazil AC%sT 1994 Sep 22 -  -5:00 - ACT 2008 Jun 24 00:00 -  -4:00 - AMT 2013 Nov 10 -  -5:00 - ACT +  -5:00 Brazil -05/-04 1988 Sep 12 +  -5:00 - -05 1993 Sep 28 +  -5:00 Brazil -05/-04 1994 Sep 22 +  -5:00 - -05 2008 Jun 24 0:00 +  -4:00 - -04 2013 Nov 10 +  -5:00 - -05   #   # Acre (AC)   Zone America/Rio_Branco -4:31:12 - LMT 1914 -  -5:00 Brazil AC%sT 1988 Sep 12 -  -5:00 - ACT 2008 Jun 24 00:00 -  -4:00 - AMT 2013 Nov 10 -  -5:00 - ACT +  -5:00 Brazil -05/-04 1988 Sep 12 +  -5:00 - -05 2008 Jun 24 0:00 +  -4:00 - -04 2013 Nov 10 +  -5:00 - -05      # Chile    -  + # From Paul Eggert (2015-04-03): + # Shanks & Pottenger says America/Santiago introduced standard time in + # 1890 and rounds its UT offset to 70W40; guess that in practice this + # was the same offset as in 1916-1919. It also says Pacific/Easter + # standardized on 109W22 in 1890; assume this didn't change the clocks. + # + # Dates for America/Santiago from 1910 to 2004 are primarily from + # the following source, cited by Oscar van Vlijmen (2006-10-08): + # [1] Chile Law + # http://www.webexhibits.org/daylightsaving/chile.html + # This contains a copy of this official table: + # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30) + # https://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm + # [1] needs several corrections, though. + # + # The first set of corrections is from: + # [2] History of the Official Time of Chile + # http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See: + # https://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html + # This is an English translation of: + # Historia de la hora oficial de Chile (retrieved 2012-10-24). See: + # https://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm + # A fancier Spanish version (requiring mouse-clicking) is at: + # http://www.horaoficial.cl/historia_hora.html + # Conflicts between [1] and [2] were resolved as follows: + # + # - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites + # Boletín No. 1, Aviso No. 1 (1910). Go with [2]. + # + # - [1] says SMT was -4:42:45, [2] says Chile's official time from + # 1916 to 1919 was -4:42:46.3, the meridian of Chile's National + # Astronomical Observatory (OAN), then located in what is now + # Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46. + # + # - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites + # Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2]. + # + # - [1] does not give times for transitions; assume they occur + # at midnight mainland time, the current common practice. However, + # go with [2]'s specification of 23:00 for the 1947-05-21 transition. + # + # Another correction to [1] is from Jesper Nørgaard Welen, who + # wrote (2006-10-08), "I think that there are some obvious mistakes in + # the suggested link from Oscar van Vlijmen,... for instance entry 66 + # says that GMT-4 ended 1990-09-12 while entry 67 only begins GMT-3 at + # 1990-09-15 (they should have been 1990-09-15 and 1990-09-16 + # respectively), but anyhow it clears up some doubts too." + # + # Data for Pacific/Easter from 1910 through 1967 come from Shanks & + # Pottenger. After that, for lack of better info assume + # Pacific/Easter is always two hours behind America/Santiago; + # this is known to work for DST transitions starting in 2008 and + # may well be true for earlier transitions. +    # From Eduardo Krell (1995-10-19):   # The law says to switch to DST at midnight [24:00] on the second SATURDAY   # of October.... The law is the same for March and October.   # (1998-09-29):   # Because of the drought this year, the government decided to go into   # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ...   # (unless there's another dry season next year, I guess).      # From Julio I. Pacheco Troncoso (1999-03-18):   # Because of the same drought, the government decided to end DST later,   # on April 3, (one-time change).    - # From Oscar van Vlijmen (2006-10-08): - # http://www.horaoficial.cl/cambio.htm -  - # From Jesper Norgaard Welen (2006-10-08): - # I think that there are some obvious mistakes in the suggested link - # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 - # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 - # (they should have been 1990-09-15 and 1990-09-16 respectively), but - # anyhow it clears up some doubts too. -  - # From Paul Eggert (2006-12-27): - # The following data for Chile and America/Santiago are from - # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by - # Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks - # & Pottenger, except with DST transitions after 1932 cloned from - # America/Santiago. The pre-1980 Pacific/Easter data are dubious, - # but we have no other source. -  - # From German Poo-Caaman~o (2008-03-03): + # From Germán Poo-Caamaño (2008-03-03):   # Due to drought, Chile extends Daylight Time in three weeks. This   # is one-time change (Saturday 3/29 at 24:00 for America/Santiago   # and Saturday 3/29 at 22:00 for Pacific/Easter)   # The Supreme Decree is located at - # <a href="http://www.shoa.cl/servicios/supremo316.pdf"> +    # http://www.shoa.cl/servicios/supremo316.pdf - # </a> - # and the instructions for 2008 are located in: - # <a href="http://www.horaoficial.cl/cambio.htm"> - # http://www.horaoficial.cl/cambio.htm - # </a>. -  - # From Jose Miguel Garrido (2008-03-05): - # ... - # You could see the announces of the change on - # <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> + # + # From José Miguel Garrido (2008-03-05):   # http://www.shoa.cl/noticias/2008/04hora/hora.htm - # </a>. +       # From Angel Chiang (2010-03-04):   # Subject: DST in Chile exceptionally extended to 3 April due to earthquake - # <a href="http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098"> +    # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 - # </a> - # (in Spanish, last paragraph). +    # - # This is breaking news. There should be more information available later. -  - # From Arthur Daivd Olson (2010-03-06): + # From Arthur David Olson (2010-03-06):   # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch.    - # From Glenn Eychaner (2011-03-02): [geychaner@mac.com] - # It appears that the Chilean government has decided to postpone the - # change from summer time to winter time again, by three weeks to April - # 2nd: - # <a href="http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651"> - # http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651 - # </a> - # - # This is not yet reflected in the official "cambio de hora" site, but - # probably will be soon: - # <a href="http://www.horaoficial.cl/cambio.htm"> - # http://www.horaoficial.cl/cambio.htm - # </a> -  - # From Arthur David Olson (2011-03-02): - # The emol.com article mentions a water shortage as the cause of the - # postponement, which may mean that it's not a permanent change. -  +    # From Glenn Eychaner (2011-03-28): - # The article: - # <a href="http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E}"> +    # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} - # </a> - # +    # In English:   # Chile's clocks will go back an hour this year on the 7th of May instead   # of this Saturday. They will go forward again the 3rd Saturday in - # August, not in October as they have since 1968. This is a pilot plan - # which will be reevaluated in 2012. + # August, not in October as they have since 1968.      # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23):   # As stated in the website of the Chilean Energy Ministry   # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html   # The Chilean Government has decided to postpone the entrance into winter time - # (to leave DST) from March 11 2012 to April 28th 2012. The decision has not - # been yet formalized but it will within the next days. + # (to leave DST) from March 11 2012 to April 28th 2012....   # Quote from the website communication:   #   # 6. For the year 2012, the dates of entry into winter time will be as follows:   # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at   # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00   # of the same day.   # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is,   # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be   # 01:00 on September 2.      # From Steffen Thorsen (2013-02-15):   # According to several news sources, Chile has extended DST this year,   # they will end DST later and start DST earlier than planned. They   # hope to save energy. The new end date is 2013-04-28 00:00 and new   # start date is 2013-09-08 00:00....   # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm    - # NOTE: ChileAQ rules for Antarctic bases are stored separately in the - # 'antarctica' file. + # From José Miguel Garrido (2014-02-19): + # Today appeared in the Diario Oficial a decree amending the time change + # dates to 2014. + # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC) + # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC) + # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf    -  + # From Eduardo Romero Urra (2015-03-03): + # Today has been published officially that Chile will use the DST time + # permanently until March 25 of 2017 + # http://www.diariooficial.interior.gob.cl/media/2015/03/03/1-large.jpg + # + # From Paul Eggert (2015-03-03): + # For now, assume that the extension will persist indefinitely. +  + # From Juan Correa (2016-03-18): + # The decree regarding DST has been published in today's Official Gazette: + # http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/ + # http://www.leychile.cl/Navegar?idNorma=1088502 + # It does consider the second Saturday of May and August as the dates + # for the transition; and it lists DST dates until 2019, but I think + # this scheme will stick. + # + # From Paul Eggert (2016-03-18): + # For now, assume the pattern holds for the indefinite future. + # The decree says transitions occur at 24:00; in practice this appears + # to mean 24:00 mainland time, not 24:00 local time, so that Easter + # Island is always two hours behind the mainland. +  + # From Juan Correa (2016-12-04): + # Magallanes region ... will keep DST (UTC -3) all year round.... + # http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-el-decreto-para-establecer-un-horario-unico-para-la-Region-de-Magallanes.aspx + # + # From Deborah Goldsmith (2017-01-19): + # http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf + # From Paul Eggert (2017-01-19): + # The above says the Magallanes change expires 2019-05-11 at 24:00, + # so in theory, they will revert to -04/-03 after that, which means + # they will switch from -03 to -04 one hour after Santiago does that day. + # For now, assume that they will not revert. +    # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Chile 1927 1932 - Sep 1 0:00 1:00 S + Rule Chile 1927 1931 - Sep 1 0:00 1:00 -   Rule Chile 1928 1932 - Apr 1 0:00 0 - - Rule Chile 1942 only - Jun 1 4:00u 0 - - Rule Chile 1942 only - Aug 1 5:00u 1:00 S - Rule Chile 1946 only - Jul 15 4:00u 1:00 S - Rule Chile 1946 only - Sep 1 3:00u 0:00 - - Rule Chile 1947 only - Apr 1 4:00u 0 - - Rule Chile 1968 only - Nov 3 4:00u 1:00 S + Rule Chile 1968 only - Nov 3 4:00u 1:00 -   Rule Chile 1969 only - Mar 30 3:00u 0 - - Rule Chile 1969 only - Nov 23 4:00u 1:00 S + Rule Chile 1969 only - Nov 23 4:00u 1:00 -   Rule Chile 1970 only - Mar 29 3:00u 0 -   Rule Chile 1971 only - Mar 14 3:00u 0 - - Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S + Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 -   Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - - Rule Chile 1973 only - Sep 30 4:00u 1:00 S - Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S + Rule Chile 1973 only - Sep 30 4:00u 1:00 - + Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 -   Rule Chile 1987 only - Apr 12 3:00u 0 - - Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - - Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S - Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S - Rule Chile 1990 only - Mar 18 3:00u 0 - - Rule Chile 1990 only - Sep 16 4:00u 1:00 S + Rule Chile 1988 1990 - Mar Sun>=9 3:00u 0 - + Rule Chile 1988 1989 - Oct Sun>=9 4:00u 1:00 - + Rule Chile 1990 only - Sep 16 4:00u 1:00 -   Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - - Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S + Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 -   Rule Chile 1997 only - Mar 30 3:00u 0 -   Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - - Rule Chile 1998 only - Sep 27 4:00u 1:00 S + Rule Chile 1998 only - Sep 27 4:00u 1:00 -   Rule Chile 1999 only - Apr 4 3:00u 0 - - Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S + Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 -   Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 -   # N.B.: the end of March 29 in Chile is March 30 in Universal time,   # which is used below in specifying the transition.   Rule Chile 2008 only - Mar 30 3:00u 0 -   Rule Chile 2009 only - Mar Sun>=9 3:00u 0 -   Rule Chile 2010 only - Apr Sun>=1 3:00u 0 -   Rule Chile 2011 only - May Sun>=2 3:00u 0 - - Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S - Rule Chile 2012 max - Apr Sun>=23 3:00u 0 - - Rule Chile 2012 max - Sep Sun>=2 4:00u 1:00 S + Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 - + Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 - + Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 - + Rule Chile 2016 max - May Sun>=9 3:00u 0 - + Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 -   # IATA SSIM anomalies: (1992-02) says 1992-03-14;   # (1996-09) says 1998-03-08. Ignore these.   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Santiago -4:42:46 - LMT 1890 -  -4:42:46 - SMT 1910 # Santiago Mean Time -  -5:00 - CLT 1916 Jul 1 # Chile Time -  -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time -  -4:00 - CLT 1919 Jul 1 # Chile Time -  -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time -  -5:00 Chile CL%sT 1947 May 22 # Chile Time -  -4:00 Chile CL%sT - Zone Pacific/Easter -7:17:44 - LMT 1890 +  -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time +  -5:00 - -05 1916 Jul 1 +  -4:42:46 - SMT 1918 Sep 10 +  -4:00 - -04 1919 Jul 1 +  -4:42:46 - SMT 1927 Sep 1 +  -5:00 Chile -05/-04 1932 Sep 1 +  -4:00 - -04 1942 Jun 1 +  -5:00 - -05 1942 Aug 1 +  -4:00 - -04 1946 Jul 15 +  -4:00 1:00 -03 1946 Sep 1 # central Chile +  -4:00 - -04 1947 Apr 1 +  -5:00 - -05 1947 May 21 23:00 +  -4:00 Chile -04/-03 + Zone America/Punta_Arenas -4:43:40 - LMT 1890 +  -4:42:46 - SMT 1910 Jan 10 +  -5:00 - -05 1916 Jul 1 +  -4:42:46 - SMT 1918 Sep 10 +  -4:00 - -04 1919 Jul 1 +  -4:42:46 - SMT 1927 Sep 1 +  -5:00 Chile -05/-04 1932 Sep 1 +  -4:00 - -04 1942 Jun 1 +  -5:00 - -05 1942 Aug 1 +  -4:00 - -04 1947 Apr 1 +  -5:00 - -05 1947 May 21 23:00 +  -4:00 Chile -04/-03 2016 Dec 4 +  -3:00 - -03 + Zone Pacific/Easter -7:17:28 - LMT 1890    -7:17:28 - EMT 1932 Sep # Easter Mean Time -  -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time -  -6:00 Chile EAS%sT +  -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time +  -6:00 Chile -06/-05   # - # Sala y Gomez Island is like Pacific/Easter. - # Other Chilean locations, including Juan Fernandez Is, San Ambrosio, - # San Felix, and Antarctic bases, are like America/Santiago. + # Salas y Gómez Island is uninhabited. + # Other Chilean locations, including Juan Fernández Is, Desventuradas Is, + # and Antarctic bases, are like America/Santiago.    -  + # Antarctic base using South American rules + # (See the file 'antarctica' for more.) + # + # Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) + # + # From Ethan Dicks (1996-10-06): + # It keeps the same time as Punta Arenas, Chile, because, just like us + # and the South Pole, that's the other end of their supply line.... + # I verified with someone who was there that since 1980, + # Palmer has followed Chile. Prior to that, before the Falklands War, + # Palmer used to be supplied from Argentina. + # + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone Antarctica/Palmer 0 - -00 1965 +  -4:00 Arg -04/-03 1969 Oct 5 +  -3:00 Arg -03/-02 1982 May +  -4:00 Chile -04/-03 2016 Dec 4 +  -3:00 - -03 +    # Colombia    - # Milne gives 4:56:16.4 for Bogota time in 1899; round to nearest. He writes, + # Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes,   # "A variation of fifteen minutes in the public clocks of Bogota is not rare."      # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule CO 1992 only - May 3 0:00 1:00 S + Rule CO 1992 only - May 3 0:00 1:00 -   Rule CO 1993 only - Apr 4 0:00 0 -   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 -  -4:56:16 - BMT 1914 Nov 23 # Bogota Mean Time -  -5:00 CO CO%sT # Colombia Time +  -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time +  -5:00 CO -05/-04   # Malpelo, Providencia, San Andres   # no information; probably like America/Bogota    - # Curacao + # Curaçao    - # Milne gives 4:35:46.9 for Curacao mean time; round to nearest. + # Milne gives 4:35:46.9 for Curaçao mean time; round to nearest.   #   # From Paul Eggert (2006-03-22):   # Shanks & Pottenger say that The Bottom and Philipsburg have been at   # -4:00 since standard time was introduced on 1912-03-02; and that   # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from   # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say - # Saba Island has been like Curacao. + # Saba Island has been like Curaçao.   # This all predates our 1970 cutoff, though.   # - # By July 2007 Curacao and St Maarten are planned to become + # By July 2007 Curaçao and St Maarten are planned to become   # associated states within the Netherlands, much like Aruba;   # Bonaire, Saba and St Eustatius would become directly part of the   # Netherlands as Kingdom Islands. This won't affect their time zones   # though, as far as we know.   #   # Zone NAME GMTOFF RULES FORMAT [UNTIL] - Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad -  -4:30 - ANT 1965 # Netherlands Antilles Time + Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad +  -4:30 - -0430 1965    -4:00 - AST      # From Arthur David Olson (2011-06-15):   # use links for places with new iso3166 codes. - # The name "Lower Prince's Quarter" is both longer than fourteen charaters + # The name "Lower Prince's Quarter" is both longer than fourteen characters   # and contains an apostrophe; use "Lower_Princes" below.      Link America/Curacao America/Lower_Princes # Sint Maarten   Link America/Curacao America/Kralendijk # Caribbean Netherlands      # Ecuador   # - # Milne says the Sentral and South American Telegraph Company used -5:24:15. + # Milne says the Central and South American Telegraph Company used -5:24:15.   # - # From Paul Eggert (2007-03-04): - # Apparently Ecuador had a failed experiment with DST in 1992. - # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and - # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both - # talk about "hora Sixto". Leave this alone for now, as we have no data. + # From Alois Treindl (2016-12-15): + # https://www.elcomercio.com/actualidad/hora-sixto-1993.html + # ... Whether the law applied also to Galápagos, I do not know. + # From Paul Eggert (2016-12-15): + # https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html + # This says President Sixto Durán Ballén signed decree No. 285, which + # established DST from 1992-11-28 to 1993-02-05; it does not give transition + # times. The people called it "hora de Sixto" ("Sixto hour"). The change did + # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics + # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin + # sol" ("It was dawning in the middle of the night, the buses went to class + # without sun"). Although Ballén's campaign slogan was "Ni un paso atrás" + # (Not one step back), the clocks went back in 1993 and the experiment was not + # repeated. For now, assume transitions were at 00:00 local time country-wide.   # -  + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Ecuador 1992 only - Nov 28 0:00 1:00 - + Rule Ecuador 1993 only - Feb 5 0:00 0 - + #   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Guayaquil -5:19:20 - LMT 1890    -5:14:00 - QMT 1931 # Quito Mean Time -  -5:00 - ECT # Ecuador Time +  -5:00 Ecuador -05/-04   Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno -  -5:00 - ECT 1986 -  -6:00 - GALT # Galapagos Time +  -5:00 - -05 1986 +  -6:00 Ecuador -06/-05      # Falklands      # From Paul Eggert (2006-03-22):   # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except   # the IATA gives 1996-09-08. Go with Shanks & Pottenger.      # From Falkland Islands Government Office, London (2001-01-22) - # via Jesper Norgaard: + # via Jesper Nørgaard:   # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15   # April 2001 and advance one hour to summer time at 2 am on Sunday 2   # September. It is anticipated that the clocks will revert back at 2   # am on Sunday 21 April 2002 and advance to summer time at 2 am on   # Sunday 1 September.      # From Rives McDow (2001-02-13):   #   # I have communicated several times with people there, and the last   # time I had communications that was helpful was in 1998. Here is
pike.git/lib/modules/Calendar.pmod/tzdata/southamerica:1451:      # From Paul Eggert (2001-03-05):   # For now, we'll just record the time in Stanley, since we have no   # better info.      # From Steffen Thorsen (2011-04-01):   # The Falkland Islands will not turn back clocks this winter, but stay on   # daylight saving time.   #   # One source: - # <a href="http://www.falklandnews.com/public/story.cfm?get=5914&source=3"> +    # http://www.falklandnews.com/public/story.cfm?get=5914&source=3 - # </a> +    #   # We have gotten this confirmed by a clerk of the legislative assembly:   # Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the   # third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3   # hours) on the first Sunday of September at 0200hrs.   #   # IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands   # will not revert to local mean time, but clocks will remain on Summer   # time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term   # change to local time following the trial period will be notified.
pike.git/lib/modules/Calendar.pmod/tzdata/southamerica:1476:   # A letter from Justin McPhee, Chief Executive,   # Cable & Wireless Falkland Islands (dated 2012-02-22)   # states...   # The current Atlantic/Stanley entry under South America expects the   # clocks to go back to standard Falklands Time (FKT) on the 15th April.   # The database entry states that in 2011 Stanley was staying on fixed   # summer time on a trial basis only. FIG need to contact IANA and/or   # the maintainers of the database to inform them we're adopting   # the same policy this year and suggest recommendations for future years.   # - # For now we will assume permanent summer time for the Falklands + # For now we will assume permanent -03 for the Falklands   # until advised differently (to apply for 2012 and beyond, after the 2011   # experiment was apparently successful.)   # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S + Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 -   Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - - Rule Falk 1939 only - Oct 1 0:00 1:00 S - Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S + Rule Falk 1939 only - Oct 1 0:00 1:00 - + Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 -   Rule Falk 1943 only - Jan 1 0:00 0 - - Rule Falk 1983 only - Sep lastSun 0:00 1:00 S + Rule Falk 1983 only - Sep lastSun 0:00 1:00 -   Rule Falk 1984 1985 - Apr lastSun 0:00 0 - - Rule Falk 1984 only - Sep 16 0:00 1:00 S - Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S + Rule Falk 1984 only - Sep 16 0:00 1:00 - + Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 -   Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 -   Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - - Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S + Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 -   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone Atlantic/Stanley -3:51:24 - LMT 1890 -  -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time -  -4:00 Falk FK%sT 1983 May # Falkland Is Time -  -3:00 Falk FK%sT 1985 Sep 15 -  -4:00 Falk FK%sT 2010 Sep 5 02:00 -  -3:00 - FKST +  -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time +  -4:00 Falk -04/-03 1983 May +  -3:00 Falk -03/-02 1985 Sep 15 +  -4:00 Falk -04/-03 2010 Sep 5 2:00 +  -3:00 - -03      # French Guiana   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Cayenne -3:29:20 - LMT 1911 Jul -  -4:00 - GFT 1967 Oct # French Guiana Time -  -3:00 - GFT +  -4:00 - -04 1967 Oct +  -3:00 - -03      # Guyana   # Zone NAME GMTOFF RULES FORMAT [UNTIL] - Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown -  -3:45 - GBGT 1966 May 26 # Br Guiana Time -  -3:45 - GYT 1975 Jul 31 # Guyana Time -  -3:00 - GYT 1991 + Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown +  -3:45 - -0345 1975 Jul 31 +  -3:00 - -03 1991   # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. -  -4:00 - GYT +  -4:00 - -04      # Paraguay   #   # From Paul Eggert (2006-03-22): - # Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, - # and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 + # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, + # and autumn transitions are 00:00 -> 23:00. Go with pre-1999   # editions of Shanks, and with the IATA, who say transitions occur at 00:00.   #   # From Waldemar Villamayor-Venialbo (2013-09-20):   # No time of the day is established for the adjustment, so people normally   # adjust their clocks at 0 hour of the given dates.   #   # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Para 1975 1988 - Oct 1 0:00 1:00 S + Rule Para 1975 1988 - Oct 1 0:00 1:00 -   Rule Para 1975 1978 - Mar 1 0:00 0 -   Rule Para 1979 1991 - Apr 1 0:00 0 - - Rule Para 1989 only - Oct 22 0:00 1:00 S - Rule Para 1990 only - Oct 1 0:00 1:00 S - Rule Para 1991 only - Oct 6 0:00 1:00 S + Rule Para 1989 only - Oct 22 0:00 1:00 - + Rule Para 1990 only - Oct 1 0:00 1:00 - + Rule Para 1991 only - Oct 6 0:00 1:00 -   Rule Para 1992 only - Mar 1 0:00 0 - - Rule Para 1992 only - Oct 5 0:00 1:00 S + Rule Para 1992 only - Oct 5 0:00 1:00 -   Rule Para 1993 only - Mar 31 0:00 0 - - Rule Para 1993 1995 - Oct 1 0:00 1:00 S + Rule Para 1993 1995 - Oct 1 0:00 1:00 -   Rule Para 1994 1995 - Feb lastSun 0:00 0 -   Rule Para 1996 only - Mar 1 0:00 0 -   # IATA SSIM (2000-02) says 1999-10-10; ignore this for now.   # From Steffen Thorsen (2000-10-02):   # I have three independent reports that Paraguay changed to DST this Sunday   # (10-01).   #   # Translated by Gwillim Law (2001-02-27) from - # <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> - # Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) - # </a>: + # Noticias, a daily paper in Asunción, Paraguay (2000-10-01): + # http://www.diarionoticias.com.py/011000/nacional/naciona1.htm   # Starting at 0:00 today, the clock will be set forward 60 minutes, in   # fulfillment of Decree No. 7,273 of the Executive Power.... The time change   # system has been operating for several years. Formerly there was a separate   # decree each year; the new law has the same effect, but permanently. Every   # year, the time will change on the first Sunday of October; likewise, the   # clock will be set back on the first Sunday of March.   # - Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S + Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 -   # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger.   Rule Para 1997 only - Feb lastSun 0:00 0 -   # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but   # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27).   Rule Para 1998 2001 - Mar Sun>=1 0:00 0 -   # From Rives McDow (2002-02-28): - # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the + # A decree was issued in Paraguay (No. 16350) on 2002-02-26 that changed the   # dst method to be from the first Sunday in September to the first Sunday in   # April.   Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - - Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S + Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 -   # - # From Jesper Norgaard Welen (2005-01-02): + # From Jesper Nørgaard Welen (2005-01-02):   # There are several sources that claim that Paraguay made   # a timezone rule change in autumn 2004.   # From Steffen Thorsen (2005-01-05):   # Decree 1,867 (2004-03-05) - # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) - # <http://www.presidencia.gov.py/decretos/D1867.pdf> - Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S + # From Carlos Raúl Perasso via Jesper Nørgaard Welen (2006-10-13) + # http://www.presidencia.gov.py/decretos/D1867.pdf + Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 -   Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - - # From Carlos Raul Perasso (2010-02-18): - # By decree number 3958 issued yesterday ( - # <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> + # From Carlos Raúl Perasso (2010-02-18): + # By decree number 3958 issued yesterday   # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf - # </a> - # ) +    # Paraguay changes its DST schedule, postponing the March rule to April and   # modifying the October date. The decree reads:   # ...   # Art. 1. It is hereby established that from the second Sunday of the month of   # April of this year (2010), the official time is to be set back 60 minutes,   # and that on the first Sunday of the month of October, it is to be set   # forward 60 minutes, in all the territory of the Paraguayan Republic.   # ... - Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S + Rule Para 2010 max - Oct Sun>=1 0:00 1:00 -   Rule Para 2010 2012 - Apr Sun>=8 0:00 0 -   #   # From Steffen Thorsen (2013-03-07):   # Paraguay will end DST on 2013-03-24 00:00....   # http://www.ande.gov.py/interna.php?id=1075   # - # From Carlos Raul Perasso (2013-03-15): + # From Carlos Raúl Perasso (2013-03-15):   # The change in Paraguay is now final. Decree number 10780   # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf -  + # From Carlos Raúl Perasso (2014-02-28): + # Decree 1264 can be found at: + # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf   Rule Para 2013 max - Mar Sun>=22 0:00 0 -      # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Asuncion -3:50:40 - LMT 1890 -  -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time -  -4:00 - PYT 1972 Oct # Paraguay Time -  -3:00 - PYT 1974 Apr -  -4:00 Para PY%sT +  -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time +  -4:00 - -04 1972 Oct +  -3:00 - -03 1974 Apr +  -4:00 Para -04/-03      # Peru   # - # <a href="news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net"> - # From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> + # From Evelyn C. Leeper via Mark Brader (2003-10-26) + # <news:xrGmb.39935$gA1.13896113@news4.srv.hcvlny.cv.net>:   # When we were in Peru in 1985-1986, they apparently switched over   # sometime between December 29 and January 3 while we were on the Amazon.   #   # From Paul Eggert (2006-03-22):   # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987.      # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Peru 1938 only - Jan 1 0:00 1:00 S + Rule Peru 1938 only - Jan 1 0:00 1:00 -   Rule Peru 1938 only - Apr 1 0:00 0 - - Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S + Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 -   Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - - Rule Peru 1986 1987 - Jan 1 0:00 1:00 S + Rule Peru 1986 1987 - Jan 1 0:00 1:00 -   Rule Peru 1986 1987 - Apr 1 0:00 0 - - Rule Peru 1990 only - Jan 1 0:00 1:00 S + Rule Peru 1990 only - Jan 1 0:00 1:00 -   Rule Peru 1990 only - Apr 1 0:00 0 -   # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. - Rule Peru 1994 only - Jan 1 0:00 1:00 S + Rule Peru 1994 only - Jan 1 0:00 1:00 -   Rule Peru 1994 only - Apr 1 0:00 0 -   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Lima -5:08:12 - LMT 1890    -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? -  -5:00 Peru PE%sT # Peru Time +  -5:00 Peru -05/-04      # South Georgia   # Zone NAME GMTOFF RULES FORMAT [UNTIL] - Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken -  -2:00 - GST # South Georgia Time + Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken +  -2:00 - -02      # South Sandwich Is   # uninhabited; scientific personnel have wintered      # Suriname   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Paramaribo -3:40:40 - LMT 1911    -3:40:52 - PMT 1935 # Paramaribo Mean Time -  -3:40:36 - PMT 1945 Oct # The capital moved? -  -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time -  -3:30 - SRT 1984 Oct # Suriname Time -  -3:00 - SRT +  -3:40:36 - PMT 1945 Oct # The capital moved? +  -3:30 - -0330 1984 Oct +  -3:00 - -03      # Trinidad and Tobago   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2    -4:00 - AST    -  + # These all agree with Trinidad and Tobago since 1970.   Link America/Port_of_Spain America/Anguilla -  + Link America/Port_of_Spain America/Antigua   Link America/Port_of_Spain America/Dominica   Link America/Port_of_Spain America/Grenada   Link America/Port_of_Spain America/Guadeloupe - Link America/Port_of_Spain America/Marigot + Link America/Port_of_Spain America/Marigot # St Martin (French part)   Link America/Port_of_Spain America/Montserrat - Link America/Port_of_Spain America/St_Barthelemy - Link America/Port_of_Spain America/St_Kitts + Link America/Port_of_Spain America/St_Barthelemy # St Barthélemy + Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis   Link America/Port_of_Spain America/St_Lucia - Link America/Port_of_Spain America/St_Thomas + Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US)   Link America/Port_of_Spain America/St_Vincent - Link America/Port_of_Spain America/Tortola + Link America/Port_of_Spain America/Tortola # Virgin Islands (UK)      # Uruguay   # From Paul Eggert (1993-11-18):   # Uruguay wins the prize for the strangest peacetime manipulation of the rules. - # From Shanks & Pottenger: + # + # From Tim Parenti (2018-02-20), per Jeremie Bonjour (2018-01-31) and Michael + # Deckers (2018-02-20): + # ... At least they kept good records... + # + # http://www.armada.mil.uy/ContenidosPDFs/sohma/web/almanaque/almanaque_2018.pdf#page=36 + # Page 36 of Almanaque 2018, published by the Oceanography, Hydrography, and + # Meteorology Service of the Uruguayan Navy, seems to give many transitions + # with greater clarity than we've had before. It directly references many laws + # and decrees which are, in turn, referenced below. They can be viewed in the + # public archives of the Diario Oficial (in Spanish) at + # http://www.impo.com.uy/diariooficial/ + # + # Ley No. 3920 of 1908-06-10 placed the determination of legal time under the + # auspices of the National Institute for the Prediction of Time. It is unclear + # exactly what offset was used during this period, though Ley No. 7200 of + # 1920-04-23 used the Observatory of the National Meteorological Institute in + # Montevideo (34° 54' 33" S, 56° 12' 45" W) as its reference meridian, + # retarding legal time by 15 minutes 9 seconds from 1920-04-30 24:00, + # resulting in UT-04. Assume the corresponding LMT of UT-03:44:51 (given on + # page 725 of the Proceedings of the Second Pan-American Scientific Congress, + # 1915-1916) was in use, and merely became official from 1908-06-10. + # https://www.impo.com.uy/diariooficial/1908/06/18/12 + # https://www.impo.com.uy/diariooficial/1920/04/27/9 + # + # Ley No. 7594 of 1923-06-28 specified legal time as Observatory time advanced + # by 44 minutes 51 seconds (UT-03) "from 30 September to 31 March", and by 14 + # minutes 51 seconds (UT-03:30) "the rest of the year"; a message from the + # National Council of Administration the same day, published directly below the + # law in the Diario Oficial, specified the first transition to be 1923-09-30 + # 24:00. This effectively established standard time at UT-03:30 with 30 + # minutes DST. Assume transitions at 24:00 on the specified days until Ley No. + # 7919 of 1926-03-05 ended this arrangement, repealing all "laws and other + # provisions which oppose" it, resulting in year-round UT-03:30; a Resolución + # of 1926-03-11 puts the final transition at 1926-03-31 24:00, the same as it + # would have been under the previous law. + # https://www.impo.com.uy/diariooficial/1923/07/02/2 + # https://www.impo.com.uy/diariooficial/1926/03/10/2 + # https://www.impo.com.uy/diariooficial/1926/03/18/2 + #   # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - # Whitman gives 1923 Oct 1; go with Shanks & Pottenger. - Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS + Rule Uruguay 1923 1925 - Oct 1 0:00 0:30 -   Rule Uruguay 1924 1926 - Apr 1 0:00 0 - - Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS - Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS - # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. - Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - - Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS - Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - - # Whitman gives 1937 Oct 3; go with Shanks & Pottenger. - Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS - # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, - # and 1943 Apr 13 "to present time"; go with Shanks & Pottenger. - Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS - Rule Uruguay 1942 only - Jan 1 0:00 0 - - Rule Uruguay 1942 only - Dec 14 0:00 1:00 S + # From Tim Parenti (2018-02-15): + # http://www.impo.com.uy/diariooficial/1933/10/27/6 + # + # It appears Ley No. 9122 of 1933 was never published as such in the Diario + # Oficial, but instead appeared as Document 26 in the Diario on Friday + # 1933-10-27 as a decree made Monday 1933-10-23 and filed under the Ministry of + # National Defense. It reinstituted a DST of 30 minutes (to UT-03) "from the + # last Sunday of October...until the last Saturday of March." In accordance + # with this provision, the first transition was explicitly specified in Article + # 2 of the decree as Saturday 1933-10-28 at 24:00; that is, Sunday 1933-10-29 + # at 00:00. Assume transitions at 00:00 Sunday throughout. + # + # Departing from the matter-of-fact nature of previous timekeeping laws, the + # 1933 decree "consider[s] the advantages of...the advance of legal time": + # + # "Whereas: The measure adopted by almost all nations at the time of the last + # World War still persists in North America and Europe, precisely because of + # the economic, hygienic, and social advantages derived from such an + # emergency measure... + # + # Whereas: The advance of the legal time during the summer seasons, by + # displacing social activity near sunrise, favors the citizen populations + # and especially the society that creates and works..." + # + # It further specified that "necessary measures" be taken to ensure that + # "public spectacles finish, in general, before [01:00]." + Rule Uruguay 1933 1938 - Oct lastSun 0:00 0:30 - + Rule Uruguay 1934 1941 - Mar lastSat 24:00 0 - + # From Tim Parenti (2018-02-15): + # Most of the Rules below, and their contemporaneous Zone lines, have been + # updated simply to match the Almanaque 2018. Although the document does not + # list exact transition times, midnight transitions were already present in our + # data here for all transitions through 2004-09, and this is both consistent + # with prior transitions and verified in several decrees marked below between + # 1939-09 and 2004-09, wherein the relevant text was typically of the form: + # + # "From 0 hours on [date], the legal time of the entire Republic will be... + # + # In accordance with [the preceding], on [previous date] at 24 hours, all + # clocks throughout the Republic will be [advanced/retarded] by..." + # + # It is possible that there is greater specificity to be found for the Rules + # below, but it is buried in no fewer than 40 different decrees individually + # referenced by the Almanaque for the period from 1939-09 to 2014-09. + # Four-fifths of these were promulgated less than two weeks before taking + # effect; more than half within a week and none more than 5 weeks. Only the + # handful with comments below have been checked with any thoroughness. + Rule Uruguay 1939 only - Oct 1 0:00 0:30 - + Rule Uruguay 1940 only - Oct 27 0:00 0:30 - + # From Tim Parenti (2018-02-15): + # Decreto 1145 of the Ministry of National Defense, dated 1941-07-26, specified + # UT-03 from Friday 1941-08-01 00:00, citing an "urgent...need to save fuel". + # http://www.impo.com.uy/diariooficial/1941/08/04/1 + Rule Uruguay 1941 only - Aug 1 0:00 0:30 - + # From Tim Parenti (2018-02-15): + # Decreto 1866 of the Ministry of National Defense, dated 1942-12-09, specified + # further advancement (to UT-02:30) from Sunday 1942-12-13 24:00. Since clocks + # never went back to UT-03:30 thereafter, this is modeled as advancing standard + # time by 30 minutes to UT-03, while retaining 30 minutes of DST. + # http://www.impo.com.uy/diariooficial/1942/12/16/3 + Rule Uruguay 1942 only - Dec 14 0:00 0:30 -   Rule Uruguay 1943 only - Mar 14 0:00 0 - - Rule Uruguay 1959 only - May 24 0:00 1:00 S + Rule Uruguay 1959 only - May 24 0:00 0:30 -   Rule Uruguay 1959 only - Nov 15 0:00 0 - - Rule Uruguay 1960 only - Jan 17 0:00 1:00 S + Rule Uruguay 1960 only - Jan 17 0:00 1:00 -   Rule Uruguay 1960 only - Mar 6 0:00 0 - - Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S + Rule Uruguay 1965 only - Apr 4 0:00 1:00 -   Rule Uruguay 1965 only - Sep 26 0:00 0 - - Rule Uruguay 1966 1967 - Oct 31 0:00 0 - - Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS - Rule Uruguay 1968 1970 - Dec 2 0:00 0 - - Rule Uruguay 1972 only - Apr 24 0:00 1:00 S - Rule Uruguay 1972 only - Aug 15 0:00 0 - - Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS - Rule Uruguay 1974 only - Dec 22 0:00 1:00 S - Rule Uruguay 1976 only - Oct 1 0:00 0 - - Rule Uruguay 1977 only - Dec 4 0:00 1:00 S - Rule Uruguay 1978 only - Apr 1 0:00 0 - - Rule Uruguay 1979 only - Oct 1 0:00 1:00 S - Rule Uruguay 1980 only - May 1 0:00 0 - - Rule Uruguay 1987 only - Dec 14 0:00 1:00 S - Rule Uruguay 1988 only - Mar 14 0:00 0 - - Rule Uruguay 1988 only - Dec 11 0:00 1:00 S - Rule Uruguay 1989 only - Mar 12 0:00 0 - - Rule Uruguay 1989 only - Oct 29 0:00 1:00 S - # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, - # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. - Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - - Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S - Rule Uruguay 1992 only - Oct 18 0:00 1:00 S + # From Tim Parenti (2018-02-15): + # Decreto 321/968 of 1968-05-25, citing emergency drought measures decreed the + # day before, brought clocks forward 30 minutes from Monday 1968-05-27 00:00. + # http://www.impo.com.uy/diariooficial/1968/05/30/5 + Rule Uruguay 1968 only - May 27 0:00 0:30 - + Rule Uruguay 1968 only - Dec 1 0:00 0 - + # From Tim Parenti (2018-02-15): + # Decreto 188/970 of 1970-04-23 instituted restrictions on electricity + # consumption "as a consequence of the current rainfall regime in the country". + # Articles 13 and 14 advanced clocks by an hour from Saturday 1970-04-25 00:00. + # http://www.impo.com.uy/diariooficial/1970/04/29/4 + Rule Uruguay 1970 only - Apr 25 0:00 1:00 - + Rule Uruguay 1970 only - Jun 14 0:00 0 - + Rule Uruguay 1972 only - Apr 23 0:00 1:00 - + Rule Uruguay 1972 only - Jul 16 0:00 0 - + # From Tim Parenti (2018-02-15): + # Decreto 29/974 of 1974-01-11, citing "the international rise in the price of + # oil", advanced clocks by 90 minutes (to UT-01:30). Decreto 163/974 of + # 1974-03-04 returned 60 of those minutes (to UT-02:30), and the remaining 30 + # minutes followed in Decreto 679/974 of 1974-08-29. + # http://www.impo.com.uy/diariooficial/1974/01/22/11 + # http://www.impo.com.uy/diariooficial/1974/03/14/3 + # http://www.impo.com.uy/diariooficial/1974/09/04/6 + Rule Uruguay 1974 only - Jan 13 0:00 1:30 - + Rule Uruguay 1974 only - Mar 10 0:00 0:30 - + Rule Uruguay 1974 only - Sep 1 0:00 0 - + Rule Uruguay 1974 only - Dec 22 0:00 1:00 - + Rule Uruguay 1975 only - Mar 30 0:00 0 - + Rule Uruguay 1976 only - Dec 19 0:00 1:00 - + Rule Uruguay 1977 only - Mar 6 0:00 0 - + Rule Uruguay 1977 only - Dec 4 0:00 1:00 - + Rule Uruguay 1978 1979 - Mar Sun>=1 0:00 0 - + Rule Uruguay 1978 only - Dec 17 0:00 1:00 - + Rule Uruguay 1979 only - Apr 29 0:00 1:00 - + Rule Uruguay 1980 only - Mar 16 0:00 0 - + # From Tim Parenti (2018-02-15): + # Decreto 725/987 of 1987-12-04 cited "better use of national tourist + # attractions" to advance clocks one hour from Monday 1987-12-14 00:00. + # http://www.impo.com.uy/diariooficial/1988/01/25/1 + Rule Uruguay 1987 only - Dec 14 0:00 1:00 - + Rule Uruguay 1988 only - Feb 28 0:00 0 - + Rule Uruguay 1988 only - Dec 11 0:00 1:00 - + Rule Uruguay 1989 only - Mar 5 0:00 0 - + Rule Uruguay 1989 only - Oct 29 0:00 1:00 - + Rule Uruguay 1990 only - Feb 25 0:00 0 - + # From Tim Parenti (2018-02-15), per Paul Eggert (1999-11-04): + # IATA agrees as below for 1990-10 through 1993-02. Per Almanaque 2018, the + # 1992/1993 season appears to be the first in over half a century where DST + # both began and ended pursuant to the same decree. + Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 - + Rule Uruguay 1991 1992 - Mar Sun>=1 0:00 0 - + Rule Uruguay 1992 only - Oct 18 0:00 1:00 -   Rule Uruguay 1993 only - Feb 28 0:00 0 -   # From Eduardo Cota (2004-09-20): - # The uruguayan government has decreed a change in the local time.... - # http://www.presidencia.gub.uy/decretos/2004091502.htm - Rule Uruguay 2004 only - Sep 19 0:00 1:00 S + # The Uruguayan government has decreed a change in the local time.... + # From Tim Parenti (2018-02-15): + # Decreto 328/004 of 2004-09-15. + # http://www.impo.com.uy/diariooficial/2004/09/23/documentos.pdf#page=1 + Rule Uruguay 2004 only - Sep 19 0:00 1:00 -   # From Steffen Thorsen (2005-03-11):   # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to   # save energy ... it was postponed two weeks.... - # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm + # From Tim Parenti (2018-02-15): + # This 2005 postponement is not in Almanaque 2018. Go with the contemporaneous + # reporting, which is confirmed by Decreto 107/005 of 2005-03-10 amending + # Decreto 328/004: + # http://www.impo.com.uy/diariooficial/2005/03/15/documentos.pdf#page=1 + # The original decree specified a transition of 2005-03-12 24:00, but the new + # one specified 2005-03-27 02:00.   Rule Uruguay 2005 only - Mar 27 2:00 0 -   # From Eduardo Cota (2005-09-27): - # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF - # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at - # 02:00 local time, official time in Uruguay will be at GMT -2. - Rule Uruguay 2005 only - Oct 9 2:00 1:00 S - Rule Uruguay 2006 only - Mar 12 2:00 0 - - # From Jesper Norgaard Welen (2006-09-06): - # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF - Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S - Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - - # Zone NAME GMTOFF RULES FORMAT [UNTIL] - Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 -  -3:44:44 - MMT 1920 May 1 # Montevideo MT -  -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time -  -3:00 Uruguay UY%sT + # ...from 2005-10-09 at 02:00 local time, until 2006-03-12 at 02:00 local time, + # official time in Uruguay will be at GMT -2. + # From Tim Parenti (2018-02-15): + # Decreto 318/005 of 2005-09-19. + # http://www.impo.com.uy/diariooficial/2005/09/23/documentos.pdf#page=1 + Rule Uruguay 2005 only - Oct 9 2:00 1:00 - + Rule Uruguay 2006 2015 - Mar Sun>=8 2:00 0 - + # From Tim Parenti (2018-02-15), per Jesper Nørgaard Welen (2006-09-06): + # Decreto 311/006 of 2006-09-04 established regular DST from the first Sunday + # of October at 02:00 through the second Sunday of March at 02:00. Almanaque + # 2018 appears to have a few typoed dates through this period; ignore them. + # http://www.impo.com.uy/diariooficial/2006/09/08/documentos.pdf#page=1 + Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 - + # From Steffen Thorsen (2015-06-30): + # ... it looks like they will not be using DST the coming summer: + # http://www.elobservador.com.uy/gobierno-resolvio-que-no-habra-cambio-horario-verano-n656787 + # http://www.republica.com.uy/este-ano-no-se-modificara-el-huso-horario-en-uruguay/523760/ + # From Paul Eggert (2015-06-30): + # Apparently restaurateurs complained that DST caused people to go to the beach + # instead of out to dinner. + # From Pablo Camargo (2015-07-13): + # http://archivo.presidencia.gub.uy/sci/decretos/2015/06/cons_min_201.pdf + # From Tim Parenti (2018-02-15): + # Decreto 178/015 of 2015-06-29; repeals Decreto 311/006.    -  + # This Zone can be simplified once we assume zic %z. + Zone America/Montevideo -3:44:51 - LMT 1908 Jun 10 +  -3:44:51 - MMT 1920 May 1 # Montevideo MT +  -4:00 - -04 1923 Oct 1 +  -3:30 Uruguay -0330/-03 1942 Dec 14 +  -3:00 Uruguay -03/-0230 1960 +  -3:00 Uruguay -03/-02 1968 +  -3:00 Uruguay -03/-0230 1970 +  -3:00 Uruguay -03/-02 1974 +  -3:00 Uruguay -03/-0130 1974 Mar 10 +  -3:00 Uruguay -03/-0230 1974 Dec 22 +  -3:00 Uruguay -03/-02 +    # Venezuela   # -  + # From Paul Eggert (2015-07-28): + # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533 + # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf + #   # From John Stainforth (2007-11-28):   # ... the change for Venezuela originally expected for 2007-12-31 has   # been brought forward to 2007-12-09. The official announcement was - # published today in the "Gaceta Oficial de la Republica Bolivariana - # de Venezuela, numero 38.819" (official document for all laws or + # published today in the "Gaceta Oficial de la República Bolivariana + # de Venezuela, número 38.819" (official document for all laws or   # resolution publication)   # http://www.globovision.com/news.php?nid=72208    -  + # From Alexander Krivenyshev (2016-04-15): + # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino + # + # From Paul Eggert (2016-04-15): + # Clocks advance 30 minutes on 2016-05-01 at 02:30.... + # "'Venezuela's new time-zone: hours without light, hours without water, + # hours of presidential broadcasts, hours of lines,' quipped comedian + # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps + # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400 + # https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE + # + # From Matt Johnson (2016-04-20): + # ... published in the official Gazette [2016-04-18], here: + # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf +    # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone America/Caracas -4:27:44 - LMT 1890    -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? -  -4:30 - VET 1965 # Venezuela Time -  -4:00 - VET 2007 Dec 9 03:00 -  -4:30 - VET +  -4:30 - -0430 1965 Jan 1 0:00 +  -4:00 - -04 2007 Dec 9 3:00 +  -4:30 - -0430 2016 May 1 2:30 +  -4:00 - -04