28 # go ahead and edit the file (and please send any changes to
29 # tz@iana.org for general use in the future). For more, please see
30 # the file CONTRIBUTING in the tz distribution.
31
32 # From Paul Eggert (2016-12-05):
33 #
34 # Unless otherwise specified, the source for data through 1990 is:
35 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
36 # San Diego: ACS Publications, Inc. (2003).
37 # Unfortunately this book contains many errors and cites no sources.
38 #
39 # Many years ago Gwillim Law wrote that a good source
40 # for time zone data was the International Air Transport
41 # Association's Standard Schedules Information Manual (IATA SSIM),
42 # published semiannually. Law sent in several helpful summaries
43 # of the IATA's data after 1990. Except where otherwise noted,
44 # IATA SSIM is the source for entries after 1990.
45 #
46 # For data circa 1899, a common source is:
47 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
48 # http://www.jstor.org/stable/1774359
49 #
50 # These tables use numeric abbreviations like -03 and -0330 for
51 # integer hour and minute UTC offsets. Although earlier editions used
52 # alphabetic time zone abbreviations, these abbreviations were
53 # invented and did not reflect common practice.
54
55 ###############################################################################
56
57 ###############################################################################
58
59 # Argentina
60
61 # From Bob Devine (1988-01-28):
62 # Argentina: first Sunday in October to first Sunday in April since 1976.
63 # Double Summer time from 1969 to 1974. Switches at midnight.
64
65 # From U. S. Naval Observatory (1988-01-19):
66 # ARGENTINA 3 H BEHIND UTC
67
68 # From Hernan G. Otero (1995-06-26):
271 #
272 # From Mariano Absatz (2004-10-05):
273 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between
274 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00
275 # at midnight between Saturday, July 24th and Sunday, July 25th....
276 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html
277 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html
278 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html
279
280 # From Alex Krivenyshev (2008-01-17):
281 # Here are articles that Argentina Province San Luis is planning to end DST
282 # as earlier as upcoming Monday January 21, 2008 or February 2008:
283 #
284 # Provincia argentina retrasa reloj y marca diferencia con resto del país
285 # (Argentine Province delayed clock and mark difference with the rest of the
286 # country)
287 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel
288 #
289 # Es inminente que en San Luis atrasen una hora los relojes
290 # (It is imminent in San Luis clocks one hour delay)
291 # http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html
292 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html
293
294 # From Jesper Nørgaard Welen (2008-01-18):
295 # The page of the San Luis provincial government
296 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812
297 # confirms what Alex Krivenyshev has earlier sent to the tz
298 # emailing list about that San Luis plans to return to standard
299 # time much earlier than the rest of the country. It also
300 # confirms that upon request the provinces San Juan and Mendoza
301 # refused to follow San Luis in this change.
302 #
303 # The change is supposed to take place Monday the 21st at 0:00
304 # hours. As far as I understand it if this goes ahead, we need
305 # a new timezone for San Luis (although there are also documented
306 # independent changes in the southamerica file of San Luis in
307 # 1990 and 1991 which has not been confirmed).
308
309 # From Jesper Nørgaard Welen (2008-01-25):
310 # Unfortunately the below page has become defunct, about the San Luis
311 # time change. Perhaps because it now is part of a group of pages "Most
312 # important pages of 2008."
391 # According to news reports from El Diario de la República Province San
392 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
393 # after April 11, 2010 - will continue to have same time as rest of
394 # Argentina (UTC-3) (no DST).
395 #
396 # Confirmaron la prórroga del huso horario de verano (Spanish)
397 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
398 # or (some English translation):
399 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
400
401 # From Mariano Absatz (2010-04-12):
402 # yes...I can confirm this...and given that San Luis keeps calling
403 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
404 # rules...San Luis is still using "Western ARgentina Time" and it got
405 # stuck on Summer daylight savings time even though the summer is over.
406
407 # From Paul Eggert (2013-09-05):
408 # Perhaps San Luis operates on the legal fiction that it is at -04
409 # with perpetual summer time, but ordinary usage typically seems to
410 # just say it's at -03; see, for example,
411 # http://es.wikipedia.org/wiki/Hora_oficial_argentina
412 # We've documented similar situations as being plain changes to
413 # standard time, so let's do that here too. This does not change UTC
414 # offsets, only tm_isdst and the time zone abbreviations. One minor
415 # plus is that this silences a zic complaint that there's no POSIX TZ
416 # setting for time stamps past 2038.
417
418 # From Paul Eggert (2013-02-21):
419 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second.
420
421 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
422 #
423 # Buenos Aires (BA), Capital Federal (CF),
424 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
425 -4:16:48 - CMT 1920 May # Córdoba Mean Time
426 -4:00 - -04 1930 Dec
427 -4:00 Arg -04/-03 1969 Oct 5
428 -3:00 Arg -03/-02 1999 Oct 3
429 -4:00 Arg -04/-03 2000 Mar 3
430 -3:00 Arg -03/-02
431 #
722 # From Steffen Thorsen (2008-08-29):
723 # As announced by the government and many newspapers in Brazil late
724 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and
725 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on
726 # past years experience with the elections, there was a good chance that
727 # the start was postponed to November, but it did not happen this year.
728 #
729 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html
730 #
731 # An official page about it:
732 # http://www.mme.gov.br/site/news/detail.do?newsId=16722
733 # Note that this link does not always work directly, but must be accessed
734 # by going to
735 # http://www.mme.gov.br/first
736 #
737 # One example link that works directly:
738 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54
739 # (Portuguese)
740 #
741 # We have a written a short article about it as well:
742 # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
743 #
744 # From Alexander Krivenyshev (2011-10-04):
745 # State Bahia will return to Daylight savings time this year after 8 years off.
746 # The announcement was made by Governor Jaques Wagner in an interview to a
747 # television station in Salvador.
748
749 # In Portuguese:
750 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
751 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
752
753 # From Guilherme Bernardes Rodrigues (2011-10-07):
754 # There is news in the media, however there is still no decree about it.
755 # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the
756 # official agency about time in Brazil, and she confirmed that the old rule is
757 # still in force.
758
759 # From Guilherme Bernardes Rodrigues (2011-10-14)
760 # It's official, the President signed a decree that includes Bahia in summer
761 # time.
762 # [ and in a second message (same day): ]
763 # I found the decree.
764 #
765 # DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011
766 # Link :
767 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
768
769 # From Kelley Cook (2012-10-16):
770 # The governor of state of Bahia in Brazil announced on Thursday that
771 # due to public pressure, he is reversing the DST policy they implemented
772 # last year and will not be going to Summer Time on October 21st....
773 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
774
775 # From Rodrigo Severo (2012-10-16):
776 # Tocantins state will have DST.
777 # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
778
779 # From Steffen Thorsen (2013-09-20):
780 # Tocantins in Brazil is very likely not to observe DST from October....
781 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
782 # We will keep this article updated when this is confirmed:
783 # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
784
785 # From Steffen Thorsen (2013-10-17):
786 # http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
787 # Senator Jorge Viana announced that Acre will change time zone on November 10.
788 # He did not specify the time of the change, nor if western parts of Amazonas
789 # will change as well.
790 #
791 # From Paul Eggert (2013-10-17):
792 # For now, assume western Amazonas will change as well.
793
794 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
795 # Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01)
796 # Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10)
797 Rule Brazil 1931 only - Oct 3 11:00 1:00 S
798 Rule Brazil 1932 1933 - Apr 1 0:00 0 -
799 Rule Brazil 1932 only - Oct 3 0:00 1:00 S
800 # Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)
801 # revoked DST.
802 # Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24)
803 # Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13)
804 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S
805 Rule Brazil 1950 only - Apr 16 1:00 0 -
806 Rule Brazil 1951 1952 - Apr 1 0:00 0 -
1082 #
1083 # Acre (AC)
1084 Zone America/Rio_Branco -4:31:12 - LMT 1914
1085 -5:00 Brazil -05/-04 1988 Sep 12
1086 -5:00 - -05 2008 Jun 24 0:00
1087 -4:00 - -04 2013 Nov 10
1088 -5:00 - -05
1089
1090 # Chile
1091
1092 # From Paul Eggert (2015-04-03):
1093 # Shanks & Pottenger says America/Santiago introduced standard time in
1094 # 1890 and rounds its UTC offset to 70W40; guess that in practice this
1095 # was the same offset as in 1916-1919. It also says Pacific/Easter
1096 # standardized on 109W22 in 1890; assume this didn't change the clocks.
1097 #
1098 # Dates for America/Santiago from 1910 to 2004 are primarily from
1099 # the following source, cited by Oscar van Vlijmen (2006-10-08):
1100 # [1] Chile Law
1101 # http://www.webexhibits.org/daylightsaving/chile.html
1102 # This contains a copy of a this official table:
1103 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1104 # http://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1105 # [1] needs several corrections, though.
1106 #
1107 # The first set of corrections is from:
1108 # [2] History of the Official Time of Chile
1109 # http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See:
1110 # http://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
1111 # This is an English translation of:
1112 # Historia de la hora oficial de Chile (retrieved 2012-10-24). See:
1113 # http://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
1114 # A fancier Spanish version (requiring mouse-clicking) is at:
1115 # http://www.horaoficial.cl/historia_hora.html
1116 # Conflicts between [1] and [2] were resolved as follows:
1117 #
1118 # - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites
1119 # Boletín No. 1, Aviso No. 1 (1910). Go with [2].
1120 #
1121 # - [1] says SMT was -4:42:45, [2] says Chile's official time from
1122 # 1916 to 1919 was -4:42:46.3, the meridian of Chile's National
1123 # Astronomical Observatory (OAN), then located in what is now
1124 # Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46.
1125 #
1126 # - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites
1127 # Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2].
1128 #
1129 # - [1] does not give times for transitions; assume they occur
1130 # at midnight mainland time, the current common practice. However,
1131 # go with [2]'s specification of 23:00 for the 1947-05-21 transition.
1132 #
1133 # Another correction to [1] is from Jesper Nørgaard Welen, who
1369 # though, as far as we know.
1370 #
1371 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1372 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1373 -4:30 - -0430 1965
1374 -4:00 - AST
1375
1376 # From Arthur David Olson (2011-06-15):
1377 # use links for places with new iso3166 codes.
1378 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1379 # and contains an apostrophe; use "Lower_Princes" below.
1380
1381 Link America/Curacao America/Lower_Princes # Sint Maarten
1382 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1383
1384 # Ecuador
1385 #
1386 # Milne says the Central and South American Telegraph Company used -5:24:15.
1387 #
1388 # From Alois Treindl (2016-12-15):
1389 # http://www.elcomercio.com/actualidad/hora-sixto-1993.html
1390 # ... Whether the law applied also to Galápagos, I do not know.
1391 # From Paul Eggert (2016-12-15):
1392 # http://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
1393 # This says President Sixto Durán Ballén signed decree No. 285, which
1394 # established DST from 1992-11-28 to 1993-02-05; it does not give transition
1395 # times. The people called it "hora de Sixto" ("Sixto hour"). The change did
1396 # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics
1397 # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin
1398 # sol" ("It was dawning in the middle of the night, the buses went to class
1399 # without sun"). Although Ballén's campaign slogan was "Ni un paso atrás"
1400 # (Not one step back), the clocks went back in 1993 and the experiment was not
1401 # repeated. For now, assume transitions were at 00:00 local time country-wide.
1402 #
1403 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1404 Rule Ecuador 1992 only - Nov 28 0:00 1:00 S
1405 Rule Ecuador 1993 only - Feb 5 0:00 0 -
1406 #
1407 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1408 Zone America/Guayaquil -5:19:20 - LMT 1890
1409 -5:14:00 - QMT 1931 # Quito Mean Time
1410 -5:00 Ecuador -05/-04
1411 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1412 -5:00 - -05 1986
1784 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
1785 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf
1786 #
1787 # From John Stainforth (2007-11-28):
1788 # ... the change for Venezuela originally expected for 2007-12-31 has
1789 # been brought forward to 2007-12-09. The official announcement was
1790 # published today in the "Gaceta Oficial de la República Bolivariana
1791 # de Venezuela, número 38.819" (official document for all laws or
1792 # resolution publication)
1793 # http://www.globovision.com/news.php?nid=72208
1794
1795 # From Alexander Krivenyshev (2016-04-15):
1796 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino
1797 #
1798 # From Paul Eggert (2016-04-15):
1799 # Clocks advance 30 minutes on 2016-05-01 at 02:30....
1800 # "'Venezuela's new time-zone: hours without light, hours without water,
1801 # hours of presidential broadcasts, hours of lines,' quipped comedian
1802 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps
1803 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400
1804 # http://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
1805 #
1806 # From Matt Johnson (2016-04-20):
1807 # ... published in the official Gazette [2016-04-18], here:
1808 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
1809
1810 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1811 Zone America/Caracas -4:27:44 - LMT 1890
1812 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1813 -4:30 - -0430 1965 Jan 1 0:00
1814 -4:00 - -04 2007 Dec 9 3:00
1815 -4:30 - -0430 2016 May 1 2:30
1816 -4:00 - -04
|
28 # go ahead and edit the file (and please send any changes to
29 # tz@iana.org for general use in the future). For more, please see
30 # the file CONTRIBUTING in the tz distribution.
31
32 # From Paul Eggert (2016-12-05):
33 #
34 # Unless otherwise specified, the source for data through 1990 is:
35 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
36 # San Diego: ACS Publications, Inc. (2003).
37 # Unfortunately this book contains many errors and cites no sources.
38 #
39 # Many years ago Gwillim Law wrote that a good source
40 # for time zone data was the International Air Transport
41 # Association's Standard Schedules Information Manual (IATA SSIM),
42 # published semiannually. Law sent in several helpful summaries
43 # of the IATA's data after 1990. Except where otherwise noted,
44 # IATA SSIM is the source for entries after 1990.
45 #
46 # For data circa 1899, a common source is:
47 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
48 # https://www.jstor.org/stable/1774359
49 #
50 # These tables use numeric abbreviations like -03 and -0330 for
51 # integer hour and minute UTC offsets. Although earlier editions used
52 # alphabetic time zone abbreviations, these abbreviations were
53 # invented and did not reflect common practice.
54
55 ###############################################################################
56
57 ###############################################################################
58
59 # Argentina
60
61 # From Bob Devine (1988-01-28):
62 # Argentina: first Sunday in October to first Sunday in April since 1976.
63 # Double Summer time from 1969 to 1974. Switches at midnight.
64
65 # From U. S. Naval Observatory (1988-01-19):
66 # ARGENTINA 3 H BEHIND UTC
67
68 # From Hernan G. Otero (1995-06-26):
271 #
272 # From Mariano Absatz (2004-10-05):
273 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between
274 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00
275 # at midnight between Saturday, July 24th and Sunday, July 25th....
276 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html
277 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html
278 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html
279
280 # From Alex Krivenyshev (2008-01-17):
281 # Here are articles that Argentina Province San Luis is planning to end DST
282 # as earlier as upcoming Monday January 21, 2008 or February 2008:
283 #
284 # Provincia argentina retrasa reloj y marca diferencia con resto del país
285 # (Argentine Province delayed clock and mark difference with the rest of the
286 # country)
287 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel
288 #
289 # Es inminente que en San Luis atrasen una hora los relojes
290 # (It is imminent in San Luis clocks one hour delay)
291 # https://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html
292 # http://www.worldtimezone.com/dst_news/dst_news_argentina02.html
293
294 # From Jesper Nørgaard Welen (2008-01-18):
295 # The page of the San Luis provincial government
296 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812
297 # confirms what Alex Krivenyshev has earlier sent to the tz
298 # emailing list about that San Luis plans to return to standard
299 # time much earlier than the rest of the country. It also
300 # confirms that upon request the provinces San Juan and Mendoza
301 # refused to follow San Luis in this change.
302 #
303 # The change is supposed to take place Monday the 21st at 0:00
304 # hours. As far as I understand it if this goes ahead, we need
305 # a new timezone for San Luis (although there are also documented
306 # independent changes in the southamerica file of San Luis in
307 # 1990 and 1991 which has not been confirmed).
308
309 # From Jesper Nørgaard Welen (2008-01-25):
310 # Unfortunately the below page has become defunct, about the San Luis
311 # time change. Perhaps because it now is part of a group of pages "Most
312 # important pages of 2008."
391 # According to news reports from El Diario de la República Province San
392 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time
393 # after April 11, 2010 - will continue to have same time as rest of
394 # Argentina (UTC-3) (no DST).
395 #
396 # Confirmaron la prórroga del huso horario de verano (Spanish)
397 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9
398 # or (some English translation):
399 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html
400
401 # From Mariano Absatz (2010-04-12):
402 # yes...I can confirm this...and given that San Luis keeps calling
403 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
404 # rules...San Luis is still using "Western ARgentina Time" and it got
405 # stuck on Summer daylight savings time even though the summer is over.
406
407 # From Paul Eggert (2013-09-05):
408 # Perhaps San Luis operates on the legal fiction that it is at -04
409 # with perpetual summer time, but ordinary usage typically seems to
410 # just say it's at -03; see, for example,
411 # https://es.wikipedia.org/wiki/Hora_oficial_argentina
412 # We've documented similar situations as being plain changes to
413 # standard time, so let's do that here too. This does not change UTC
414 # offsets, only tm_isdst and the time zone abbreviations. One minor
415 # plus is that this silences a zic complaint that there's no POSIX TZ
416 # setting for time stamps past 2038.
417
418 # From Paul Eggert (2013-02-21):
419 # Milne says Córdoba time was -4:16:48.2. Round to the nearest second.
420
421 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
422 #
423 # Buenos Aires (BA), Capital Federal (CF),
424 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
425 -4:16:48 - CMT 1920 May # Córdoba Mean Time
426 -4:00 - -04 1930 Dec
427 -4:00 Arg -04/-03 1969 Oct 5
428 -3:00 Arg -03/-02 1999 Oct 3
429 -4:00 Arg -04/-03 2000 Mar 3
430 -3:00 Arg -03/-02
431 #
722 # From Steffen Thorsen (2008-08-29):
723 # As announced by the government and many newspapers in Brazil late
724 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and
725 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on
726 # past years experience with the elections, there was a good chance that
727 # the start was postponed to November, but it did not happen this year.
728 #
729 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html
730 #
731 # An official page about it:
732 # http://www.mme.gov.br/site/news/detail.do?newsId=16722
733 # Note that this link does not always work directly, but must be accessed
734 # by going to
735 # http://www.mme.gov.br/first
736 #
737 # One example link that works directly:
738 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54
739 # (Portuguese)
740 #
741 # We have a written a short article about it as well:
742 # https://www.timeanddate.com/news/time/brazil-dst-2008-2009.html
743 #
744 # From Alexander Krivenyshev (2011-10-04):
745 # State Bahia will return to Daylight savings time this year after 8 years off.
746 # The announcement was made by Governor Jaques Wagner in an interview to a
747 # television station in Salvador.
748
749 # In Portuguese:
750 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html
751 # https://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html
752
753 # From Guilherme Bernardes Rodrigues (2011-10-07):
754 # There is news in the media, however there is still no decree about it.
755 # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the
756 # official agency about time in Brazil, and she confirmed that the old rule is
757 # still in force.
758
759 # From Guilherme Bernardes Rodrigues (2011-10-14)
760 # It's official, the President signed a decree that includes Bahia in summer
761 # time.
762 # [ and in a second message (same day): ]
763 # I found the decree.
764 #
765 # DECRETO No. 7.584, DE 13 DE OUTUBRO DE 2011
766 # Link :
767 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6
768
769 # From Kelley Cook (2012-10-16):
770 # The governor of state of Bahia in Brazil announced on Thursday that
771 # due to public pressure, he is reversing the DST policy they implemented
772 # last year and will not be going to Summer Time on October 21st....
773 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
774
775 # From Rodrigo Severo (2012-10-16):
776 # Tocantins state will have DST.
777 # https://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
778
779 # From Steffen Thorsen (2013-09-20):
780 # Tocantins in Brazil is very likely not to observe DST from October....
781 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto
782 # We will keep this article updated when this is confirmed:
783 # https://www.timeanddate.com/news/time/brazil-starts-dst-2013.html
784
785 # From Steffen Thorsen (2013-10-17):
786 # https://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html
787 # Senator Jorge Viana announced that Acre will change time zone on November 10.
788 # He did not specify the time of the change, nor if western parts of Amazonas
789 # will change as well.
790 #
791 # From Paul Eggert (2013-10-17):
792 # For now, assume western Amazonas will change as well.
793
794 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
795 # Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01)
796 # Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10)
797 Rule Brazil 1931 only - Oct 3 11:00 1:00 S
798 Rule Brazil 1932 1933 - Apr 1 0:00 0 -
799 Rule Brazil 1932 only - Oct 3 0:00 1:00 S
800 # Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10)
801 # revoked DST.
802 # Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24)
803 # Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13)
804 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S
805 Rule Brazil 1950 only - Apr 16 1:00 0 -
806 Rule Brazil 1951 1952 - Apr 1 0:00 0 -
1082 #
1083 # Acre (AC)
1084 Zone America/Rio_Branco -4:31:12 - LMT 1914
1085 -5:00 Brazil -05/-04 1988 Sep 12
1086 -5:00 - -05 2008 Jun 24 0:00
1087 -4:00 - -04 2013 Nov 10
1088 -5:00 - -05
1089
1090 # Chile
1091
1092 # From Paul Eggert (2015-04-03):
1093 # Shanks & Pottenger says America/Santiago introduced standard time in
1094 # 1890 and rounds its UTC offset to 70W40; guess that in practice this
1095 # was the same offset as in 1916-1919. It also says Pacific/Easter
1096 # standardized on 109W22 in 1890; assume this didn't change the clocks.
1097 #
1098 # Dates for America/Santiago from 1910 to 2004 are primarily from
1099 # the following source, cited by Oscar van Vlijmen (2006-10-08):
1100 # [1] Chile Law
1101 # http://www.webexhibits.org/daylightsaving/chile.html
1102 # This contains a copy of this official table:
1103 # Cambios en la hora oficial de Chile desde 1900 (retrieved 2008-03-30)
1104 # https://web.archive.org/web/20080330200901/http://www.horaoficial.cl/cambio.htm
1105 # [1] needs several corrections, though.
1106 #
1107 # The first set of corrections is from:
1108 # [2] History of the Official Time of Chile
1109 # http://www.horaoficial.cl/ing/horaof_ing.html (retrieved 2012-03-06). See:
1110 # https://web.archive.org/web/20120306042032/http://www.horaoficial.cl/ing/horaof_ing.html
1111 # This is an English translation of:
1112 # Historia de la hora oficial de Chile (retrieved 2012-10-24). See:
1113 # https://web.archive.org/web/20121024234627/http://www.horaoficial.cl/horaof.htm
1114 # A fancier Spanish version (requiring mouse-clicking) is at:
1115 # http://www.horaoficial.cl/historia_hora.html
1116 # Conflicts between [1] and [2] were resolved as follows:
1117 #
1118 # - [1] says the 1910 transition was Jan 1, [2] says Jan 10 and cites
1119 # Boletín No. 1, Aviso No. 1 (1910). Go with [2].
1120 #
1121 # - [1] says SMT was -4:42:45, [2] says Chile's official time from
1122 # 1916 to 1919 was -4:42:46.3, the meridian of Chile's National
1123 # Astronomical Observatory (OAN), then located in what is now
1124 # Quinta Normal in Santiago. Go with [2], rounding it to -4:42:46.
1125 #
1126 # - [1] says the 1918 transition was Sep 1, [2] says Sep 10 and cites
1127 # Boletín No. 22, Aviso No. 129/1918 (1918-08-23). Go with [2].
1128 #
1129 # - [1] does not give times for transitions; assume they occur
1130 # at midnight mainland time, the current common practice. However,
1131 # go with [2]'s specification of 23:00 for the 1947-05-21 transition.
1132 #
1133 # Another correction to [1] is from Jesper Nørgaard Welen, who
1369 # though, as far as we know.
1370 #
1371 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1372 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1373 -4:30 - -0430 1965
1374 -4:00 - AST
1375
1376 # From Arthur David Olson (2011-06-15):
1377 # use links for places with new iso3166 codes.
1378 # The name "Lower Prince's Quarter" is both longer than fourteen characters
1379 # and contains an apostrophe; use "Lower_Princes" below.
1380
1381 Link America/Curacao America/Lower_Princes # Sint Maarten
1382 Link America/Curacao America/Kralendijk # Caribbean Netherlands
1383
1384 # Ecuador
1385 #
1386 # Milne says the Central and South American Telegraph Company used -5:24:15.
1387 #
1388 # From Alois Treindl (2016-12-15):
1389 # https://www.elcomercio.com/actualidad/hora-sixto-1993.html
1390 # ... Whether the law applied also to Galápagos, I do not know.
1391 # From Paul Eggert (2016-12-15):
1392 # https://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
1393 # This says President Sixto Durán Ballén signed decree No. 285, which
1394 # established DST from 1992-11-28 to 1993-02-05; it does not give transition
1395 # times. The people called it "hora de Sixto" ("Sixto hour"). The change did
1396 # not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics
1397 # that included "Amanecía en mitad de la noche, los guaguas iban a clase sin
1398 # sol" ("It was dawning in the middle of the night, the buses went to class
1399 # without sun"). Although Ballén's campaign slogan was "Ni un paso atrás"
1400 # (Not one step back), the clocks went back in 1993 and the experiment was not
1401 # repeated. For now, assume transitions were at 00:00 local time country-wide.
1402 #
1403 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1404 Rule Ecuador 1992 only - Nov 28 0:00 1:00 S
1405 Rule Ecuador 1993 only - Feb 5 0:00 0 -
1406 #
1407 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1408 Zone America/Guayaquil -5:19:20 - LMT 1890
1409 -5:14:00 - QMT 1931 # Quito Mean Time
1410 -5:00 Ecuador -05/-04
1411 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
1412 -5:00 - -05 1986
1784 # For the 1965 transition see Gaceta Oficial No. 27.619 (1964-12-15), p 205.533
1785 # http://www.pgr.gob.ve/dmdocuments/1964/27619.pdf
1786 #
1787 # From John Stainforth (2007-11-28):
1788 # ... the change for Venezuela originally expected for 2007-12-31 has
1789 # been brought forward to 2007-12-09. The official announcement was
1790 # published today in the "Gaceta Oficial de la República Bolivariana
1791 # de Venezuela, número 38.819" (official document for all laws or
1792 # resolution publication)
1793 # http://www.globovision.com/news.php?nid=72208
1794
1795 # From Alexander Krivenyshev (2016-04-15):
1796 # https://actualidad.rt.com/actualidad/204758-venezuela-modificar-huso-horario-sequia-elnino
1797 #
1798 # From Paul Eggert (2016-04-15):
1799 # Clocks advance 30 minutes on 2016-05-01 at 02:30....
1800 # "'Venezuela's new time-zone: hours without light, hours without water,
1801 # hours of presidential broadcasts, hours of lines,' quipped comedian
1802 # Jean Mary Curró ...". See: Cawthorne A, Kai D. Venezuela scraps
1803 # half-hour time difference set by Chavez. Reuters 2016-04-15 14:50 -0400
1804 # https://www.reuters.com/article/us-venezuela-timezone-idUSKCN0XC2BE
1805 #
1806 # From Matt Johnson (2016-04-20):
1807 # ... published in the official Gazette [2016-04-18], here:
1808 # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf
1809
1810 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1811 Zone America/Caracas -4:27:44 - LMT 1890
1812 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
1813 -4:30 - -0430 1965 Jan 1 0:00
1814 -4:00 - -04 2007 Dec 9 3:00
1815 -4:30 - -0430 2016 May 1 2:30
1816 -4:00 - -04
|