southamerica revision 1.1.1.2
1 # This file is in the public domain, so clarified as of 2 # 2009-05-17 by Arthur David Olson. 3 4 # This file is by no means authoritative; if you think you know better, 5 # go ahead and edit the file (and please send any changes to 6 # tz (a] iana.org for general use in the future). For more, please see 7 # the file CONTRIBUTING in the tz distribution. 8 9 # From Paul Eggert (2006-03-22): 10 # A good source for time zone historical data outside the U.S. is 11 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 12 # San Diego: ACS Publications, Inc. (2003). 13 # 14 # For data circa 1899, a common source is: 15 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 16 # http://www.jstor.org/stable/1774359 17 # 18 # Gwillim Law writes that a good source 19 # for recent time zone data is the International Air Transport 20 # Association's Standard Schedules Information Manual (IATA SSIM), 21 # published semiannually. Law sent in several helpful summaries 22 # of the IATA's data after 1990. 23 # 24 # Except where otherwise noted, Shanks & Pottenger is the source for 25 # entries through 1990, and IATA SSIM is the source for entries afterwards. 26 # 27 # Earlier editions of these tables used the North American style (e.g. ARST and 28 # ARDT for Argentine Standard and Daylight Time), but the following quote 29 # suggests that it's better to use European style (e.g. ART and ARST). 30 # I suggest the use of _Summer time_ instead of the more cumbersome 31 # _daylight-saving time_. _Summer time_ seems to be in general use 32 # in Europe and South America. 33 # --E O Cutler, _New York Times_ (1937-02-14), quoted in 34 # H L Mencken, _The American Language: Supplement I_ (1960), p 466 35 # 36 # Earlier editions of these tables also used the North American style 37 # for time zones in Brazil, but this was incorrect, as Brazilians say 38 # "summer time". Reinaldo Goulart, a So Paulo businessman active in 39 # the railroad sector, writes (1999-07-06): 40 # The subject of time zones is currently a matter of discussion/debate in 41 # Brazil. Let's say that "the Braslia time" is considered the 42 # "official time" because Braslia is the capital city. 43 # The other three time zones are called "Braslia time "minus one" or 44 # "plus one" or "plus two". As far as I know there is no such 45 # name/designation as "Eastern Time" or "Central Time". 46 # So I invented the following (English-language) abbreviations for now. 47 # Corrections are welcome! 48 # std dst 49 # -2:00 FNT FNST Fernando de Noronha 50 # -3:00 BRT BRST Braslia 51 # -4:00 AMT AMST Amazon 52 # -5:00 ACT ACST Acre 53 54 ############################################################################### 55 56 ############################################################################### 57 58 # Argentina 59 60 # From Bob Devine (1988-01-28): 61 # Argentina: first Sunday in October to first Sunday in April since 1976. 62 # Double Summer time from 1969 to 1974. Switches at midnight. 63 64 # From U. S. Naval Observatory (1988-01-19): 65 # ARGENTINA 3 H BEHIND UTC 66 67 # From Hernan G. Otero (1995-06-26): 68 # I am sending modifications to the Argentine time zone table... 69 # AR was chosen because they are the ISO letters that represent Argentina. 70 71 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 72 Rule Arg 1930 only - Dec 1 0:00 1:00 S 73 Rule Arg 1931 only - Apr 1 0:00 0 - 74 Rule Arg 1931 only - Oct 15 0:00 1:00 S 75 Rule Arg 1932 1940 - Mar 1 0:00 0 - 76 Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 77 Rule Arg 1940 only - Jul 1 0:00 1:00 S 78 Rule Arg 1941 only - Jun 15 0:00 0 - 79 Rule Arg 1941 only - Oct 15 0:00 1:00 S 80 Rule Arg 1943 only - Aug 1 0:00 0 - 81 Rule Arg 1943 only - Oct 15 0:00 1:00 S 82 Rule Arg 1946 only - Mar 1 0:00 0 - 83 Rule Arg 1946 only - Oct 1 0:00 1:00 S 84 Rule Arg 1963 only - Oct 1 0:00 0 - 85 Rule Arg 1963 only - Dec 15 0:00 1:00 S 86 Rule Arg 1964 1966 - Mar 1 0:00 0 - 87 Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 88 Rule Arg 1967 only - Apr 2 0:00 0 - 89 Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 90 Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 91 Rule Arg 1974 only - Jan 23 0:00 1:00 S 92 Rule Arg 1974 only - May 1 0:00 0 - 93 Rule Arg 1988 only - Dec 1 0:00 1:00 S 94 # 95 # From Hernan G. Otero (1995-06-26): 96 # These corrections were contributed by InterSoft Argentina S.A., 97 # obtaining the data from the: 98 # Talleres de Hidrografa Naval Argentina 99 # (Argentine Naval Hydrography Institute) 100 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 101 Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 102 # 103 # From Hernan G. Otero (1995-06-26): 104 # From this moment on, the law that mandated the daylight saving 105 # time corrections was derogated and no more modifications 106 # to the time zones (for daylight saving) are now made. 107 # 108 # From Rives McDow (2000-01-10): 109 # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 110 # which did not result in the switch of a time zone, as they stayed 9 hours 111 # from the International Date Line. 112 Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 113 # From Paul Eggert (2007-12-28): 114 # DST was set to expire on March 5, not March 3, but since it was converted 115 # to standard time on March 3 it's more convenient for us to pretend that 116 # it ended on March 3. 117 Rule Arg 2000 only - Mar 3 0:00 0 - 118 # 119 # From Peter Gradelski via Steffen Thorsen (2000-03-01): 120 # We just checked with our So Paulo office and they say the government of 121 # Argentina decided not to become one of the countries that go on or off DST. 122 # So Buenos Aires should be -3 hours from GMT at all times. 123 # 124 # From Fabin L. Arce Jofr (2000-04-04): 125 # The law that claimed DST for Argentina was derogated by President Fernando 126 # de la Ra on March 2, 2000, because it would make people spend more energy 127 # in the winter time, rather than less. The change took effect on March 3. 128 # 129 # From Mariano Absatz (2001-06-06): 130 # one of the major newspapers here in Argentina said that the 1999 131 # Timezone Law (which never was effectively applied) will (would?) be 132 # in effect.... The article is at 133 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm 134 # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 135 # 1999-09-17, and published 1999-09-21. The official publication is at: 136 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 137 # Regretfully, you have to subscribe (and pay) for the on-line version.... 138 # 139 # (2001-06-12): 140 # the timezone for Argentina will not change next Sunday. 141 # Apparently it will do so on Sunday 24th.... 142 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm 143 # 144 # (2001-06-25): 145 # Last Friday (yes, the last working day before the date of the change), the 146 # Senate annulled the 1999 law that introduced the changes later postponed. 147 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 148 # It remains the vote of the Deputies..., but it will be the same.... 149 # This kind of things had always been done this way in Argentina. 150 # We are still -03:00 all year round in all of the country. 151 # 152 # From Steffen Thorsen (2007-12-21): 153 # A user (Leonardo Chaim) reported that Argentina will adopt DST.... 154 # all of the country (all Zone-entries) are affected. News reports like 155 # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 156 # that Argentina will use DST next year as well, from October to 157 # March, although exact rules are not given. 158 # 159 # From Jesper Nrgaard Welen (2007-12-26) 160 # The last hurdle of Argentina DST is over, the proposal was approved in 161 # the lower chamber too (Diputados) with a vote 192 for and 2 against. 162 # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 163 # the original scanned proposal, where the dates and the zero hours are 164 # clear and unambiguous...This is the article about final approval: 165 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 166 # 167 # From Paul Eggert (2007-12-22): 168 # For dates after mid-2008, the following rules are my guesses and 169 # are quite possibly wrong, but are more likely than no DST at all. 170 171 # From Alexander Krivenyshev (2008-09-05): 172 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 173 # Argentina will start DST on Sunday October 19, 2008. 174 # 175 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 176 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 177 178 # From Rodrigo Severo (2008-10-06): 179 # Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 180 # ... 181 # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 182 # Hi, there is a problem with timezone-data-2008e and maybe with 183 # timezone-data-2008f 184 # Argentinian law [Number] 25.155 is no longer valid. 185 # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 186 # The new one is law [Number] 26.350 187 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 188 # So there is no summer time in Argentina for now. 189 190 # From Mariano Absatz (2008-10-20): 191 # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST 192 # in Argentina from 2008-10-19 until 2009-03-15. 193 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 194 # 195 196 # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 197 # 2008/2009: Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La 198 # Pampa, Neuqun, Rio Negro, Chubut, Santa Cruz and Tierra del Fuego 199 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 200 # 201 # Press release 235 dated Saturday October 18th, from the Government of the 202 # Province of Jujuy saying it will not apply DST either (even when it was not 203 # included in Decree 1705/2008). 204 # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 205 206 # From fullinet (2009-10-18): 207 # As announced in 208 # http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 209 # (an official .gob.ar) under title: "Sin Cambio de Hora" 210 # (English: "No hour change"). 211 # 212 # "Por el momento, el Gobierno Nacional resolvi no modificar la hora 213 # oficial, decisin que estaba en estudio para su implementacin el 214 # domingo 18 de octubre. Desde el Ministerio de Planificacin se anunci 215 # que la Argentina hoy, en estas condiciones meteorolgicas, no necesita 216 # la modificacin del huso horario, ya que 2009 nos encuentra con 217 # crecimiento en la produccin y distribucin energtica." 218 219 Rule Arg 2007 only - Dec 30 0:00 1:00 S 220 Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 221 Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 222 223 # From Mariano Absatz (2004-05-21): 224 # Today it was officially published that the Province of Mendoza is changing 225 # its timezone this winter... starting tomorrow night.... 226 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 227 # From Paul Eggert (2004-05-24): 228 # It's Law No. 7,210. This change is due to a public power emergency, so for 229 # now we'll assume it's for this year only. 230 # 231 # From Paul Eggert (2014-08-09): 232 # Hora de verano para la Repblica Argentina 233 # http://buenasiembra.com.ar/esoterismo/astrologia/hora-de-verano-de-la-republica-argentina-27.html 234 # says that standard time in Argentina from 1894-10-31 235 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value 236 # over Shanks & Pottenger. 237 # 238 # From Mariano Absatz (2004-06-05): 239 # These media articles from a major newspaper mostly cover the current state: 240 # http://www.lanacion.com.ar/04/05/27/de_604825.asp 241 # http://www.lanacion.com.ar/04/05/28/de_605203.asp 242 # 243 # The following eight (8) provinces pulled clocks back to UTC-04:00 at 244 # midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 245 # Apparently, all nine provinces would go back to UTC-03:00 at the same 246 # time in October 17th. 247 # 248 # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 249 # Tierra del Fuego, Tucumn. 250 # 251 # From Mariano Absatz (2004-06-14): 252 # ... this weekend, the Province of Tucumn decided it'd go back to UTC-03:00 253 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 254 # annoyance with the change is much higher than the power savings obtained.... 255 # 256 # From Gwillim Law (2004-06-14): 257 # http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 258 # "The time change in Tierra del Fuego was a conflicted decision from 259 # the start. The government had decreed that the measure would take 260 # effect on June 1, but a normative error forced the new time to begin 261 # three days earlier, from a Saturday to a Sunday.... 262 # Our understanding was that the change was originally scheduled to take place 263 # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 264 # provinces). Sunday was May 30, only two days earlier. So the article 265 # contains a contradiction. I would give more credence to the Saturday/Sunday 266 # date than the "three days earlier" phrase, and conclude that Tierra del 267 # Fuego set its clocks back at 2004-05-30 00:00. 268 # 269 # From Steffen Thorsen (2004-10-05): 270 # The previous law 7210 which changed the province of Mendoza's time zone 271 # back in May have been modified slightly in a new law 7277, which set the 272 # new end date to 2004-09-26 (original date was 2004-10-17). 273 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 274 # 275 # From Mariano Absatz (2004-10-05): 276 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 277 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 278 # at midnight between Saturday, July 24th and Sunday, July 25th.... 279 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html 280 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html 281 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html 282 283 # From Alex Krivenyshev (2008-01-17): 284 # Here are articles that Argentina Province San Luis is planning to end DST 285 # as earlier as upcoming Monday January 21, 2008 or February 2008: 286 # 287 # Provincia argentina retrasa reloj y marca diferencia con resto del pas 288 # (Argentine Province delayed clock and mark difference with the rest of the 289 # country) 290 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 291 # 292 # Es inminente que en San Luis atrasen una hora los relojes 293 # (It is imminent in San Luis clocks one hour delay) 294 # http://www.lagaceta.com.ar/nota/253414/Economia/Es-inminente-que-en-San-Luis-atrasen-una-hora-los-relojes.html 295 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 296 297 # From Jesper Nrgaard Welen (2008-01-18): 298 # The page of the San Luis provincial government 299 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 300 # confirms what Alex Krivenyshev has earlier sent to the tz 301 # emailing list about that San Luis plans to return to standard 302 # time much earlier than the rest of the country. It also 303 # confirms that upon request the provinces San Juan and Mendoza 304 # refused to follow San Luis in this change. 305 # 306 # The change is supposed to take place Monday the 21st at 0:00 307 # hours. As far as I understand it if this goes ahead, we need 308 # a new timezone for San Luis (although there are also documented 309 # independent changes in the southamerica file of San Luis in 310 # 1990 and 1991 which has not been confirmed). 311 312 # From Jesper Nrgaard Welen (2008-01-25): 313 # Unfortunately the below page has become defunct, about the San Luis 314 # time change. Perhaps because it now is part of a group of pages "Most 315 # important pages of 2008." 316 # 317 # You can use 318 # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 319 # instead it seems. Or use "Buscador" from the main page of the San Luis 320 # government, and fill in "huso" and click OK, and you will get 3 pages 321 # from which the first one is identical to the above. 322 323 # From Mariano Absatz (2008-01-28): 324 # I can confirm that the Province of San Luis (and so far only that 325 # province) decided to go back to UTC-3 effective midnight Jan 20th 2008 326 # (that is, Monday 21st at 0:00 is the time the clocks were delayed back 327 # 1 hour), and they intend to keep UTC-3 as their timezone all year round 328 # (that is, unless they change their mind any minute now). 329 # 330 # So we'll have to add yet another city to 'southamerica' (I think San 331 # Luis city is the mos populated city in the Province, so it'd be 332 # America/Argentina/San_Luis... of course I can't remember if San Luis's 333 # history of particular changes goes along with Mendoza or San Juan :-( 334 # (I only remember not being able to collect hard facts about San Luis 335 # back in 2004, when these provinces changed to UTC-4 for a few days, I 336 # mailed them personally and never got an answer). 337 338 # From Paul Eggert (2014-08-12): 339 # Unless otherwise specified, data entries are from Shanks & Pottenger through 340 # 1992, from the IATA otherwise. As noted below, Shanks & Pottenger say that 341 # America/Cordoba split into 6 subregions during 1991/1992, one of which 342 # was America/San_Luis, but we haven't verified this yet so for now we'll 343 # keep America/Cordoba a single region rather than splitting it into the 344 # other 5 subregions. 345 346 # From Mariano Absatz (2009-03-13): 347 # Yesterday (with our usual 2-day notice) the Province of San Luis 348 # decided that next Sunday instead of "staying" @utc-03:00 they will go 349 # to utc-04:00 until the second Saturday in October... 350 # 351 # The press release is at 352 # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 353 # (I couldn't find the decree, but www.sanluis.gov.ar 354 # is the official page for the Province Government.) 355 # 356 # There's also a note in only one of the major national papers ... 357 # http://www.lanacion.com.ar/nota.asp?nota_id=1107912 358 # 359 # The press release says [quick and dirty translation]: 360 # ... announced that next Sunday, at 00:00, Puntanos (the San Luis 361 # inhabitants) will have to turn back one hour their clocks 362 # 363 # Since then, San Luis will establish its own Province timezone. Thus, 364 # during 2009, this timezone change will run from 00:00 the third Sunday 365 # in March until 24:00 of the second Saturday in October. 366 367 # From Mariano Absatz (2009-10-16): 368 # ...the Province of San Luis is a case in itself. 369 # 370 # The Law at 371 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 372 # is ambiguous because establishes a calendar from the 2nd Sunday in 373 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the 374 # complement of that starting on the 2nd Sunday of March at 0:00 and 375 # ending on the 2nd Saturday of March at 24:00. 376 # 377 # This clearly breaks every time the 1st of March or October is a Sunday. 378 # 379 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 380 # Sunday of October and March. 381 # 382 # The problem is that the changes in the rest of the Provinces that did 383 # change in 2007/2008, were made according to the Federal Law and Decrees 384 # that did so on the 3rd Sunday of October and March. 385 # 386 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 387 # (October 11th) at 0:00. 388 # 389 # So I guess a new set of rules, besides "Arg", must be made and the last 390 # America/Argentina/San_Luis entries should change to use these... 391 # 392 # I'm enclosing a patch that does what I say... regretfully, the San Luis 393 # timezone must be called "WART/WARST" even when most of the time (like, 394 # right now) WARST == ART... that is, since last Sunday, all the country 395 # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 396 # of the country calls it "ART". 397 # ... 398 399 # From Alexander Krivenyshev (2010-04-09): 400 # According to news reports from El Diario de la Repblica Province San 401 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 402 # after April 11, 2010 - will continue to have same time as rest of 403 # Argentina (UTC-3) (no DST). 404 # 405 # Confirmaron la prrroga del huso horario de verano (Spanish) 406 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 407 # or (some English translation): 408 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 409 410 # From Mariano Absatz (2010-04-12): 411 # yes...I can confirm this...and given that San Luis keeps calling 412 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 413 # rules...San Luis is still using "Western ARgentina Time" and it got 414 # stuck on Summer daylight savings time even though the summer is over. 415 416 # From Paul Eggert (2013-09-05): 417 # Perhaps San Luis operates on the legal fiction that it is at UTC-4 418 # with perpetual summer time, but ordinary usage typically seems to 419 # just say it's at UTC-3; see, for example, 420 # http://es.wikipedia.org/wiki/Hora_oficial_argentina 421 # We've documented similar situations as being plain changes to 422 # standard time, so let's do that here too. This does not change UTC 423 # offsets, only tm_isdst and the time zone abbreviations. One minor 424 # plus is that this silences a zic complaint that there's no POSIX TZ 425 # setting for time stamps past 2038. 426 427 # From Paul Eggert (2013-02-21): 428 # Milne says Crdoba time was -4:16:48.2. Round to the nearest second. 429 430 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 431 # 432 # Buenos Aires (BA), Capital Federal (CF), 433 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 434 -4:16:48 - CMT 1920 May # Crdoba Mean Time 435 -4:00 - ART 1930 Dec 436 -4:00 Arg AR%sT 1969 Oct 5 437 -3:00 Arg AR%sT 1999 Oct 3 438 -4:00 Arg AR%sT 2000 Mar 3 439 -3:00 Arg AR%sT 440 # 441 # Crdoba (CB), Santa Fe (SF), Entre Ros (ER), Corrientes (CN), Misiones (MN), 442 # Chaco (CC), Formosa (FM), Santiago del Estero (SE) 443 # 444 # Shanks & Pottenger also make the following claims, which we haven't verified: 445 # - Formosa switched to -3:00 on 1991-01-07. 446 # - Misiones switched to -3:00 on 1990-12-29. 447 # - Chaco switched to -3:00 on 1991-01-04. 448 # - Santiago del Estero switched to -4:00 on 1991-04-01, 449 # then to -3:00 on 1991-04-26. 450 # 451 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 452 -4:16:48 - CMT 1920 May 453 -4:00 - ART 1930 Dec 454 -4:00 Arg AR%sT 1969 Oct 5 455 -3:00 Arg AR%sT 1991 Mar 3 456 -4:00 - WART 1991 Oct 20 457 -3:00 Arg AR%sT 1999 Oct 3 458 -4:00 Arg AR%sT 2000 Mar 3 459 -3:00 Arg AR%sT 460 # 461 # Salta (SA), La Pampa (LP), Neuqun (NQ), Rio Negro (RN) 462 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 463 -4:16:48 - CMT 1920 May 464 -4:00 - ART 1930 Dec 465 -4:00 Arg AR%sT 1969 Oct 5 466 -3:00 Arg AR%sT 1991 Mar 3 467 -4:00 - WART 1991 Oct 20 468 -3:00 Arg AR%sT 1999 Oct 3 469 -4:00 Arg AR%sT 2000 Mar 3 470 -3:00 Arg AR%sT 2008 Oct 18 471 -3:00 - ART 472 # 473 # Tucumn (TM) 474 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 475 -4:16:48 - CMT 1920 May 476 -4:00 - ART 1930 Dec 477 -4:00 Arg AR%sT 1969 Oct 5 478 -3:00 Arg AR%sT 1991 Mar 3 479 -4:00 - WART 1991 Oct 20 480 -3:00 Arg AR%sT 1999 Oct 3 481 -4:00 Arg AR%sT 2000 Mar 3 482 -3:00 - ART 2004 Jun 1 483 -4:00 - WART 2004 Jun 13 484 -3:00 Arg AR%sT 485 # 486 # La Rioja (LR) 487 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 488 -4:16:48 - CMT 1920 May 489 -4:00 - ART 1930 Dec 490 -4:00 Arg AR%sT 1969 Oct 5 491 -3:00 Arg AR%sT 1991 Mar 1 492 -4:00 - WART 1991 May 7 493 -3:00 Arg AR%sT 1999 Oct 3 494 -4:00 Arg AR%sT 2000 Mar 3 495 -3:00 - ART 2004 Jun 1 496 -4:00 - WART 2004 Jun 20 497 -3:00 Arg AR%sT 2008 Oct 18 498 -3:00 - ART 499 # 500 # San Juan (SJ) 501 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 502 -4:16:48 - CMT 1920 May 503 -4:00 - ART 1930 Dec 504 -4:00 Arg AR%sT 1969 Oct 5 505 -3:00 Arg AR%sT 1991 Mar 1 506 -4:00 - WART 1991 May 7 507 -3:00 Arg AR%sT 1999 Oct 3 508 -4:00 Arg AR%sT 2000 Mar 3 509 -3:00 - ART 2004 May 31 510 -4:00 - WART 2004 Jul 25 511 -3:00 Arg AR%sT 2008 Oct 18 512 -3:00 - ART 513 # 514 # Jujuy (JY) 515 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 516 -4:16:48 - CMT 1920 May 517 -4:00 - ART 1930 Dec 518 -4:00 Arg AR%sT 1969 Oct 5 519 -3:00 Arg AR%sT 1990 Mar 4 520 -4:00 - WART 1990 Oct 28 521 -4:00 1:00 WARST 1991 Mar 17 522 -4:00 - WART 1991 Oct 6 523 -3:00 1:00 ARST 1992 524 -3:00 Arg AR%sT 1999 Oct 3 525 -4:00 Arg AR%sT 2000 Mar 3 526 -3:00 Arg AR%sT 2008 Oct 18 527 -3:00 - ART 528 # 529 # Catamarca (CT), Chubut (CH) 530 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 531 -4:16:48 - CMT 1920 May 532 -4:00 - ART 1930 Dec 533 -4:00 Arg AR%sT 1969 Oct 5 534 -3:00 Arg AR%sT 1991 Mar 3 535 -4:00 - WART 1991 Oct 20 536 -3:00 Arg AR%sT 1999 Oct 3 537 -4:00 Arg AR%sT 2000 Mar 3 538 -3:00 - ART 2004 Jun 1 539 -4:00 - WART 2004 Jun 20 540 -3:00 Arg AR%sT 2008 Oct 18 541 -3:00 - ART 542 # 543 # Mendoza (MZ) 544 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 545 -4:16:48 - CMT 1920 May 546 -4:00 - ART 1930 Dec 547 -4:00 Arg AR%sT 1969 Oct 5 548 -3:00 Arg AR%sT 1990 Mar 4 549 -4:00 - WART 1990 Oct 15 550 -4:00 1:00 WARST 1991 Mar 1 551 -4:00 - WART 1991 Oct 15 552 -4:00 1:00 WARST 1992 Mar 1 553 -4:00 - WART 1992 Oct 18 554 -3:00 Arg AR%sT 1999 Oct 3 555 -4:00 Arg AR%sT 2000 Mar 3 556 -3:00 - ART 2004 May 23 557 -4:00 - WART 2004 Sep 26 558 -3:00 Arg AR%sT 2008 Oct 18 559 -3:00 - ART 560 # 561 # San Luis (SL) 562 563 Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 564 Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S 565 566 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 567 -4:16:48 - CMT 1920 May 568 -4:00 - ART 1930 Dec 569 -4:00 Arg AR%sT 1969 Oct 5 570 -3:00 Arg AR%sT 1990 571 -3:00 1:00 ARST 1990 Mar 14 572 -4:00 - WART 1990 Oct 15 573 -4:00 1:00 WARST 1991 Mar 1 574 -4:00 - WART 1991 Jun 1 575 -3:00 - ART 1999 Oct 3 576 -4:00 1:00 WARST 2000 Mar 3 577 -3:00 - ART 2004 May 31 578 -4:00 - WART 2004 Jul 25 579 -3:00 Arg AR%sT 2008 Jan 21 580 -4:00 SanLuis WAR%sT 2009 Oct 11 581 -3:00 - ART 582 # 583 # Santa Cruz (SC) 584 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 585 -4:16:48 - CMT 1920 May # Crdoba Mean Time 586 -4:00 - ART 1930 Dec 587 -4:00 Arg AR%sT 1969 Oct 5 588 -3:00 Arg AR%sT 1999 Oct 3 589 -4:00 Arg AR%sT 2000 Mar 3 590 -3:00 - ART 2004 Jun 1 591 -4:00 - WART 2004 Jun 20 592 -3:00 Arg AR%sT 2008 Oct 18 593 -3:00 - ART 594 # 595 # Tierra del Fuego, Antrtida e Islas del Atlntico Sur (TF) 596 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 597 -4:16:48 - CMT 1920 May # Crdoba Mean Time 598 -4:00 - ART 1930 Dec 599 -4:00 Arg AR%sT 1969 Oct 5 600 -3:00 Arg AR%sT 1999 Oct 3 601 -4:00 Arg AR%sT 2000 Mar 3 602 -3:00 - ART 2004 May 30 603 -4:00 - WART 2004 Jun 20 604 -3:00 Arg AR%sT 2008 Oct 18 605 -3:00 - ART 606 607 # Aruba 608 Link America/Curacao America/Aruba 609 610 # Bolivia 611 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 612 Zone America/La_Paz -4:32:36 - LMT 1890 613 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 614 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 615 -4:00 - BOT # Bolivia Time 616 617 # Brazil 618 619 # From Paul Eggert (1993-11-18): 620 # The mayor of Rio recently attempted to change the time zone rules 621 # just in his city, in order to leave more summer time for the tourist trade. 622 # The rule change lasted only part of the day; 623 # the federal government refused to follow the city's rules, and business 624 # was in a chaos, so the mayor backed down that afternoon. 625 626 # From IATA SSIM (1996-02): 627 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 628 # Santa Catarina (SC), Paran (PR), So Paulo (SP), Rio de Janeiro (RJ), 629 # Esprito Santo (ES), Minas Gerais (MG), Bahia (BA), Gois (GO), 630 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 631 # [The last three states are new to this issue of the IATA SSIM.] 632 633 # From Gwillim Law (1996-10-07): 634 # Geography, history (Tocantins was part of Gois until 1989), and other 635 # sources of time zone information lead me to believe that AL, SE, and TO were 636 # always in BR1, and so the only change was whether or not they observed DST.... 637 # The earliest issue of the SSIM I have is 2/91. Each issue from then until 638 # 9/95 says that DST is observed only in the ten states I quoted from 9/95, 639 # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 640 # (UTC-4).... The other two time zones given for Brazil are BR3, which is 641 # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 642 # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 643 # become part of the state of Pernambuco). The boundary between BR1 and BR2 644 # has never been clearly stated. They've simply been called East and West. 645 # However, some conclusions can be drawn from another IATA manual: the Airline 646 # Coding Directory, which lists close to 400 airports in Brazil. For each 647 # airport it gives a time zone which is coded to the SSIM. From that 648 # information, I'm led to conclude that the states of Amap (AP), Cear (CE), 649 # Maranho (MA), Paraba (PR), Pernambuco (PE), Piau (PI), and Rio Grande do 650 # Norte (RN), and the eastern part of Par (PA) are all in BR1 without DST. 651 652 # From Marcos Tadeu (1998-09-27): 653 # Brazilian official page <http://pcdsh01.on.br/verao1.html> 654 655 # From Jesper Nrgaard (2000-11-03): 656 # [For an official list of which regions in Brazil use which time zones, see:] 657 # http://pcdsh01.on.br/Fusbr.htm 658 # http://pcdsh01.on.br/Fusbrhv.htm 659 660 # From Celso Doria via David Madeo (2002-10-09): 661 # The reason for the delay this year has to do with elections in Brazil. 662 # 663 # Unlike in the United States, elections in Brazil are 100% computerized and 664 # the results are known almost immediately. Yesterday, it was the first 665 # round of the elections when 115 million Brazilians voted for President, 666 # Governor, Senators, Federal Deputies, and State Deputies. Nobody is 667 # counting (or re-counting) votes anymore and we know there will be a second 668 # round for the Presidency and also for some Governors. The 2nd round will 669 # take place on October 27th. 670 # 671 # The reason why the DST will only begin November 3rd is that the thousands 672 # of electoral machines used cannot have their time changed, and since the 673 # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 674 # the Government decided to postpone DST, instead of changing the Constitution 675 # (maybe, for the next elections, it will be possible to change the clock)... 676 677 # From Rodrigo Severo (2004-10-04): 678 # It's just the biannual change made necessary by the much hyped, supposedly 679 # modern Brazilian eletronic voting machines which, apparently, can't deal 680 # with a time change between the first and the second rounds of the elections. 681 682 # From Steffen Thorsen (2007-09-20): 683 # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 684 # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 685 686 # From Paul Schulze (2008-06-24): 687 # ...by law number 11.662 of April 24, 2008 (published in the "Diario 688 # Oficial da Unio"...) in Brazil there are changes in the timezones, 689 # effective today (00:00am at June 24, 2008) as follows: 690 # 691 # a) The timezone UTC+5 is extinguished, with all the Acre state and the 692 # part of the Amazonas state that had this timezone now being put to the 693 # timezone UTC+4 694 # b) The whole Par state now is put at timezone UTC+3, instead of just 695 # part of it, as was before. 696 # 697 # This change follows a proposal of senator Tiao Viana of Acre state, that 698 # proposed it due to concerns about open television channels displaying 699 # programs inappropriate to youths in the states that had the timezone 700 # UTC+5 too early in the night. In the occasion, some more corrections 701 # were proposed, trying to unify the timezones of any given state. This 702 # change modifies timezone rules defined in decree 2.784 of 18 June, 703 # 1913. 704 705 # From Rodrigo Severo (2008-06-24): 706 # Just correcting the URL: 707 # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 708 # 709 # As a result of the above Decree I believe the America/Rio_Branco 710 # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 711 # be created to represent the...west side of the Par State. I 712 # suggest this new timezone be called Santarem as the most 713 # important/populated city in the affected area. 714 # 715 # This new timezone would be the same as the Rio_Branco timezone up to 716 # the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 717 718 # From Alex Krivenyshev (2008-06-24): 719 # This is a quick reference page for New and Old Brazil Time Zones map. 720 # http://www.worldtimezone.com/brazil-time-new-old.php 721 # 722 # - 4 time zones replaced by 3 time zones - eliminating time zone UTC-05 723 # (state Acre and the part of the Amazonas will be UTC/GMT-04) - western 724 # part of Par state is moving to one timezone UTC-03 (from UTC-04). 725 726 # From Paul Eggert (2002-10-10): 727 # The official decrees referenced below are mostly taken from 728 # Decretos sobre o Horrio de Vero no Brasil. 729 # http://pcdsh01.on.br/DecHV.html 730 731 # From Steffen Thorsen (2008-08-29): 732 # As announced by the government and many newspapers in Brazil late 733 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 734 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on 735 # past years experience with the elections, there was a good chance that 736 # the start was postponed to November, but it did not happen this year. 737 # 738 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html 739 # 740 # An official page about it: 741 # http://www.mme.gov.br/site/news/detail.do?newsId=16722 742 # Note that this link does not always work directly, but must be accessed 743 # by going to 744 # http://www.mme.gov.br/first 745 # 746 # One example link that works directly: 747 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 748 # (Portuguese) 749 # 750 # We have a written a short article about it as well: 751 # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 752 # 753 # From Alexander Krivenyshev (2011-10-04): 754 # State Bahia will return to Daylight savings time this year after 8 years off. 755 # The announcement was made by Governor Jaques Wagner in an interview to a 756 # television station in Salvador. 757 758 # In Portuguese: 759 # http://g1.globo.com/bahia/noticia/2011/10/governador-jaques-wagner-confirma-horario-de-verao-na-bahia.html 760 # http://noticias.terra.com.br/brasil/noticias/0,,OI5390887-EI8139,00-Bahia+volta+a+ter+horario+de+verao+apos+oito+anos.html 761 762 # From Guilherme Bernardes Rodrigues (2011-10-07): 763 # There is news in the media, however there is still no decree about it. 764 # I just send a e-mail to Zulmira Brandao at http://pcdsh01.on.br/ the 765 # official agency about time in Brazil, and she confirmed that the old rule is 766 # still in force. 767 768 # From Guilherme Bernardes Rodrigues (2011-10-14) 769 # It's official, the President signed a decree that includes Bahia in summer 770 # time. 771 # [ and in a second message (same day): ] 772 # I found the decree. 773 # 774 # DECRETO No- 7.584, DE 13 DE OUTUBRO DE 2011 775 # Link : 776 # http://www.in.gov.br/visualiza/index.jsp?data=13/10/2011&jornal=1000&pagina=6&totalArquivos=6 777 778 # From Kelley Cook (2012-10-16): 779 # The governor of state of Bahia in Brazil announced on Thursday that 780 # due to public pressure, he is reversing the DST policy they implemented 781 # last year and will not be going to Summer Time on October 21st.... 782 # http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia 783 784 # From Rodrigo Severo (2012-10-16): 785 # Tocantins state will have DST. 786 # http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html 787 788 # From Steffen Thorsen (2013-09-20): 789 # Tocantins in Brazil is very likely not to observe DST from October.... 790 # http://conexaoto.com.br/2013/09/18/ministerio-confirma-que-tocantins-esta-fora-do-horario-de-verao-em-2013-mas-falta-publicacao-de-decreto 791 # We will keep this article updated when this is confirmed: 792 # http://www.timeanddate.com/news/time/brazil-starts-dst-2013.html 793 794 # From Steffen Thorsen (2013-10-17): 795 # http://www.timeanddate.com/news/time/acre-amazonas-change-time-zone.html 796 # Senator Jorge Viana announced that Acre will change time zone on November 10. 797 # He did not specify the time of the change, nor if western parts of Amazonas 798 # will change as well. 799 # 800 # From Paul Eggert (2013-10-17): 801 # For now, assume western Amazonas will change as well. 802 803 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 804 # Decree 20,466 <http://pcdsh01.on.br/HV20466.htm> (1931-10-01) 805 # Decree 21,896 <http://pcdsh01.on.br/HV21896.htm> (1932-01-10) 806 Rule Brazil 1931 only - Oct 3 11:00 1:00 S 807 Rule Brazil 1932 1933 - Apr 1 0:00 0 - 808 Rule Brazil 1932 only - Oct 3 0:00 1:00 S 809 # Decree 23,195 <http://pcdsh01.on.br/HV23195.htm> (1933-10-10) 810 # revoked DST. 811 # Decree 27,496 <http://pcdsh01.on.br/HV27496.htm> (1949-11-24) 812 # Decree 27,998 <http://pcdsh01.on.br/HV27998.htm> (1950-04-13) 813 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 814 Rule Brazil 1950 only - Apr 16 1:00 0 - 815 Rule Brazil 1951 1952 - Apr 1 0:00 0 - 816 # Decree 32,308 <http://pcdsh01.on.br/HV32308.htm> (1953-02-24) 817 Rule Brazil 1953 only - Mar 1 0:00 0 - 818 # Decree 34,724 <http://pcdsh01.on.br/HV34724.htm> (1953-11-30) 819 # revoked DST. 820 # Decree 52,700 <http://pcdsh01.on.br/HV52700.htm> (1963-10-18) 821 # established DST from 1963-10-23 00:00 to 1964-02-29 00:00 822 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 823 # Decree 53,071 <http://pcdsh01.on.br/HV53071.htm> (1963-12-03) 824 # extended the above decree to all of the national territory on 12-09. 825 Rule Brazil 1963 only - Dec 9 0:00 1:00 S 826 # Decree 53,604 <http://pcdsh01.on.br/HV53604.htm> (1964-02-25) 827 # extended summer time by one day to 1964-03-01 00:00 (start of school). 828 Rule Brazil 1964 only - Mar 1 0:00 0 - 829 # Decree 55,639 <http://pcdsh01.on.br/HV55639.htm> (1965-01-27) 830 Rule Brazil 1965 only - Jan 31 0:00 1:00 S 831 Rule Brazil 1965 only - Mar 31 0:00 0 - 832 # Decree 57,303 <http://pcdsh01.on.br/HV57303.htm> (1965-11-22) 833 Rule Brazil 1965 only - Dec 1 0:00 1:00 S 834 # Decree 57,843 <http://pcdsh01.on.br/HV57843.htm> (1966-02-18) 835 Rule Brazil 1966 1968 - Mar 1 0:00 0 - 836 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 837 # Decree 63,429 <http://pcdsh01.on.br/HV63429.htm> (1968-10-15) 838 # revoked DST. 839 # Decree 91,698 <http://pcdsh01.on.br/HV91698.htm> (1985-09-27) 840 Rule Brazil 1985 only - Nov 2 0:00 1:00 S 841 # Decree 92,310 (1986-01-21) 842 # Decree 92,463 (1986-03-13) 843 Rule Brazil 1986 only - Mar 15 0:00 0 - 844 # Decree 93,316 (1986-10-01) 845 Rule Brazil 1986 only - Oct 25 0:00 1:00 S 846 Rule Brazil 1987 only - Feb 14 0:00 0 - 847 # Decree 94,922 <http://pcdsh01.on.br/HV94922.htm> (1987-09-22) 848 Rule Brazil 1987 only - Oct 25 0:00 1:00 S 849 Rule Brazil 1988 only - Feb 7 0:00 0 - 850 # Decree 96,676 <http://pcdsh01.on.br/HV96676.htm> (1988-09-12) 851 # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 852 Rule Brazil 1988 only - Oct 16 0:00 1:00 S 853 Rule Brazil 1989 only - Jan 29 0:00 0 - 854 # Decree 98,077 <http://pcdsh01.on.br/HV98077.htm> (1989-08-21) 855 # with the same exceptions 856 Rule Brazil 1989 only - Oct 15 0:00 1:00 S 857 Rule Brazil 1990 only - Feb 11 0:00 0 - 858 # Decree 99,530 <http://pcdsh01.on.br/HV99530.htm> (1990-09-17) 859 # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 860 # Decree 99,629 (1990-10-19) adds BA, MT. 861 Rule Brazil 1990 only - Oct 21 0:00 1:00 S 862 Rule Brazil 1991 only - Feb 17 0:00 0 - 863 # Unnumbered decree <http://pcdsh01.on.br/HV1991.htm> (1991-09-25) 864 # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 865 Rule Brazil 1991 only - Oct 20 0:00 1:00 S 866 Rule Brazil 1992 only - Feb 9 0:00 0 - 867 # Unnumbered decree <http://pcdsh01.on.br/HV1992.htm> (1992-10-16) 868 # adopted by same states. 869 Rule Brazil 1992 only - Oct 25 0:00 1:00 S 870 Rule Brazil 1993 only - Jan 31 0:00 0 - 871 # Decree 942 <http://pcdsh01.on.br/HV942.htm> (1993-09-28) 872 # adopted by same states, plus AM. 873 # Decree 1,252 <http://pcdsh01.on.br/HV1252.htm> (1994-09-22; 874 # web page corrected 2004-01-07) adopted by same states, minus AM. 875 # Decree 1,636 <http://pcdsh01.on.br/HV1636.htm> (1995-09-14) 876 # adopted by same states, plus MT and TO. 877 # Decree 1,674 <http://pcdsh01.on.br/HV1674.htm> (1995-10-13) 878 # adds AL, SE. 879 Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 880 Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 881 Rule Brazil 1996 only - Feb 11 0:00 0 - 882 # Decree 2,000 <http://pcdsh01.on.br/HV2000.htm> (1996-09-04) 883 # adopted by same states, minus AL, SE. 884 Rule Brazil 1996 only - Oct 6 0:00 1:00 S 885 Rule Brazil 1997 only - Feb 16 0:00 0 - 886 # From Daniel C. Sobral (1998-02-12): 887 # In 1997, the DS began on October 6. The stated reason was that 888 # because international television networks ignored Brazil's policy on DS, 889 # they bought the wrong times on satellite for coverage of Pope's visit. 890 # This year, the ending date of DS was postponed to March 1 891 # to help dealing with the shortages of electric power. 892 # 893 # Decree 2,317 (1997-09-04), adopted by same states. 894 Rule Brazil 1997 only - Oct 6 0:00 1:00 S 895 # Decree 2,495 <http://pcdsh01.on.br/figuras/HV2495.JPG> 896 # (1998-02-10) 897 Rule Brazil 1998 only - Mar 1 0:00 0 - 898 # Decree 2,780 <http://pcdsh01.on.br/figuras/Hv98.jpg> (1998-09-11) 899 # adopted by the same states as before. 900 Rule Brazil 1998 only - Oct 11 0:00 1:00 S 901 Rule Brazil 1999 only - Feb 21 0:00 0 - 902 # Decree 3,150 <http://pcdsh01.on.br/figuras/HV3150.gif> 903 # (1999-08-23) adopted by same states. 904 # Decree 3,188 <http://pcdsh01.on.br/DecHV99.gif> (1999-09-30) 905 # adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 906 Rule Brazil 1999 only - Oct 3 0:00 1:00 S 907 Rule Brazil 2000 only - Feb 27 0:00 0 - 908 # Decree 3,592 <http://pcdsh01.on.br/DEC3592.htm> (2000-09-06) 909 # adopted by the same states as before. 910 # Decree 3,630 <http://pcdsh01.on.br/Dec3630.jpg> (2000-10-13) 911 # repeals DST in PE and RR, effective 2000-10-15 00:00. 912 # Decree 3,632 <http://pcdsh01.on.br/Dec3632.jpg> (2000-10-17) 913 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 914 # Decree 3,916 <http://pcdsh01.on.br/figuras/HV3916.gif> 915 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 916 Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 917 Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 918 # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 919 # 4,399 <http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm> 920 Rule Brazil 2002 only - Nov 3 0:00 1:00 S 921 # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 922 # 4,844 <http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm> 923 Rule Brazil 2003 only - Oct 19 0:00 1:00 S 924 # Decree 5,223 (2004-10-01) reestablishes DST in MT. 925 # 5,223 <http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm> 926 Rule Brazil 2004 only - Nov 2 0:00 1:00 S 927 # Decree 5,539 <http://pcdsh01.on.br/DecHV5539.gif> (2005-09-19), 928 # adopted by the same states as before. 929 Rule Brazil 2005 only - Oct 16 0:00 1:00 S 930 # Decree 5,920 <http://pcdsh01.on.br/DecHV5920.gif> (2006-10-03), 931 # adopted by the same states as before. 932 Rule Brazil 2006 only - Nov 5 0:00 1:00 S 933 Rule Brazil 2007 only - Feb 25 0:00 0 - 934 # Decree 6,212 <http://pcdsh01.on.br/DecHV6212.gif> (2007-09-26), 935 # adopted by the same states as before. 936 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 937 # From Frederico A. C. Neves (2008-09-10): 938 # According to this decree 939 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 940 # [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the 941 # 3rd Feb Sunday. There is an exception on the return date when this is 942 # the Carnival Sunday then the return date will be the next Sunday... 943 Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S 944 Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - 945 Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - 946 Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - 947 Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - 948 Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - 949 Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - 950 Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - 951 Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - 952 Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - 953 Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - 954 Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - 955 Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - 956 # From Arthur David Olson (2008-09-29): 957 # The next is wrong in some years but is better than nothing. 958 Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - 959 960 # The latest ruleset listed above says that the following states observe DST: 961 # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. 962 963 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 964 # 965 # Fernando de Noronha (administratively part of PE) 966 Zone America/Noronha -2:09:40 - LMT 1914 967 -2:00 Brazil FN%sT 1990 Sep 17 968 -2:00 - FNT 1999 Sep 30 969 -2:00 Brazil FN%sT 2000 Oct 15 970 -2:00 - FNT 2001 Sep 13 971 -2:00 Brazil FN%sT 2002 Oct 1 972 -2:00 - FNT 973 # Other Atlantic islands have no permanent settlement. 974 # These include Trindade and Martim Vaz (administratively part of ES), 975 # Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE). 976 # Fernando de Noronha was a separate territory from 1942-09-02 to 1989-01-01; 977 # it also included the Penedos. 978 # 979 # Amap (AP), east Par (PA) 980 # East Par includes Belm, Marab, Serra Norte, and So Flix do Xingu. 981 # The division between east and west Par is the river Xingu. 982 # In the north a very small part from the river Javary (now Jari I guess, 983 # the border with Amap) to the Amazon, then to the Xingu. 984 Zone America/Belem -3:13:56 - LMT 1914 985 -3:00 Brazil BR%sT 1988 Sep 12 986 -3:00 - BRT 987 # 988 # west Par (PA) 989 # West Par includes Altamira, bidos, Prainha, Oriximin, and Santarm. 990 Zone America/Santarem -3:38:48 - LMT 1914 991 -4:00 Brazil AM%sT 1988 Sep 12 992 -4:00 - AMT 2008 Jun 24 0:00 993 -3:00 - BRT 994 # 995 # Maranho (MA), Piau (PI), Cear (CE), Rio Grande do Norte (RN), 996 # Paraba (PB) 997 Zone America/Fortaleza -2:34:00 - LMT 1914 998 -3:00 Brazil BR%sT 1990 Sep 17 999 -3:00 - BRT 1999 Sep 30 1000 -3:00 Brazil BR%sT 2000 Oct 22 1001 -3:00 - BRT 2001 Sep 13 1002 -3:00 Brazil BR%sT 2002 Oct 1 1003 -3:00 - BRT 1004 # 1005 # Pernambuco (PE) (except Atlantic islands) 1006 Zone America/Recife -2:19:36 - LMT 1914 1007 -3:00 Brazil BR%sT 1990 Sep 17 1008 -3:00 - BRT 1999 Sep 30 1009 -3:00 Brazil BR%sT 2000 Oct 15 1010 -3:00 - BRT 2001 Sep 13 1011 -3:00 Brazil BR%sT 2002 Oct 1 1012 -3:00 - BRT 1013 # 1014 # Tocantins (TO) 1015 Zone America/Araguaina -3:12:48 - LMT 1914 1016 -3:00 Brazil BR%sT 1990 Sep 17 1017 -3:00 - BRT 1995 Sep 14 1018 -3:00 Brazil BR%sT 2003 Sep 24 1019 -3:00 - BRT 2012 Oct 21 1020 -3:00 Brazil BR%sT 2013 Sep 1021 -3:00 - BRT 1022 # 1023 # Alagoas (AL), Sergipe (SE) 1024 Zone America/Maceio -2:22:52 - LMT 1914 1025 -3:00 Brazil BR%sT 1990 Sep 17 1026 -3:00 - BRT 1995 Oct 13 1027 -3:00 Brazil BR%sT 1996 Sep 4 1028 -3:00 - BRT 1999 Sep 30 1029 -3:00 Brazil BR%sT 2000 Oct 22 1030 -3:00 - BRT 2001 Sep 13 1031 -3:00 Brazil BR%sT 2002 Oct 1 1032 -3:00 - BRT 1033 # 1034 # Bahia (BA) 1035 # There are too many Salvadors elsewhere, so use America/Bahia instead 1036 # of America/Salvador. 1037 Zone America/Bahia -2:34:04 - LMT 1914 1038 -3:00 Brazil BR%sT 2003 Sep 24 1039 -3:00 - BRT 2011 Oct 16 1040 -3:00 Brazil BR%sT 2012 Oct 21 1041 -3:00 - BRT 1042 # 1043 # Gois (GO), Distrito Federal (DF), Minas Gerais (MG), 1044 # Esprito Santo (ES), Rio de Janeiro (RJ), So Paulo (SP), Paran (PR), 1045 # Santa Catarina (SC), Rio Grande do Sul (RS) 1046 Zone America/Sao_Paulo -3:06:28 - LMT 1914 1047 -3:00 Brazil BR%sT 1963 Oct 23 0:00 1048 -3:00 1:00 BRST 1964 1049 -3:00 Brazil BR%sT 1050 # 1051 # Mato Grosso do Sul (MS) 1052 Zone America/Campo_Grande -3:38:28 - LMT 1914 1053 -4:00 Brazil AM%sT 1054 # 1055 # Mato Grosso (MT) 1056 Zone America/Cuiaba -3:44:20 - LMT 1914 1057 -4:00 Brazil AM%sT 2003 Sep 24 1058 -4:00 - AMT 2004 Oct 1 1059 -4:00 Brazil AM%sT 1060 # 1061 # Rondnia (RO) 1062 Zone America/Porto_Velho -4:15:36 - LMT 1914 1063 -4:00 Brazil AM%sT 1988 Sep 12 1064 -4:00 - AMT 1065 # 1066 # Roraima (RR) 1067 Zone America/Boa_Vista -4:02:40 - LMT 1914 1068 -4:00 Brazil AM%sT 1988 Sep 12 1069 -4:00 - AMT 1999 Sep 30 1070 -4:00 Brazil AM%sT 2000 Oct 15 1071 -4:00 - AMT 1072 # 1073 # east Amazonas (AM): Boca do Acre, Juta, Manaus, Floriano Peixoto 1074 # The great circle line from Tabatinga to Porto Acre divides 1075 # east from west Amazonas. 1076 Zone America/Manaus -4:00:04 - LMT 1914 1077 -4:00 Brazil AM%sT 1988 Sep 12 1078 -4:00 - AMT 1993 Sep 28 1079 -4:00 Brazil AM%sT 1994 Sep 22 1080 -4:00 - AMT 1081 # 1082 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1083 # Eirunep, Envira, Ipixuna 1084 Zone America/Eirunepe -4:39:28 - LMT 1914 1085 -5:00 Brazil AC%sT 1988 Sep 12 1086 -5:00 - ACT 1993 Sep 28 1087 -5:00 Brazil AC%sT 1994 Sep 22 1088 -5:00 - ACT 2008 Jun 24 0:00 1089 -4:00 - AMT 2013 Nov 10 1090 -5:00 - ACT 1091 # 1092 # Acre (AC) 1093 Zone America/Rio_Branco -4:31:12 - LMT 1914 1094 -5:00 Brazil AC%sT 1988 Sep 12 1095 -5:00 - ACT 2008 Jun 24 0:00 1096 -4:00 - AMT 2013 Nov 10 1097 -5:00 - ACT 1098 1099 # Chile 1100 1101 # From Eduardo Krell (1995-10-19): 1102 # The law says to switch to DST at midnight [24:00] on the second SATURDAY 1103 # of October.... The law is the same for March and October. 1104 # (1998-09-29): 1105 # Because of the drought this year, the government decided to go into 1106 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1107 # (unless there's another dry season next year, I guess). 1108 1109 # From Julio I. Pacheco Troncoso (1999-03-18): 1110 # Because of the same drought, the government decided to end DST later, 1111 # on April 3, (one-time change). 1112 1113 # From Oscar van Vlijmen (2006-10-08): 1114 # http://www.horaoficial.cl/cambio.htm 1115 1116 # From Jesper Nrgaard Welen (2006-10-08): 1117 # I think that there are some obvious mistakes in the suggested link 1118 # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1119 # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1120 # (they should have been 1990-09-15 and 1990-09-16 respectively), but 1121 # anyhow it clears up some doubts too. 1122 1123 # From Paul Eggert (2014-08-12): 1124 # The following data entries for Chile and America/Santiago are from 1125 # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1126 # Jesper Nrgaard Welen. The data entries for Pacific/Easter are from Shanks 1127 # & Pottenger, except with DST transitions after 1932 cloned from 1128 # America/Santiago. The pre-1980 Pacific/Easter data entries are dubious, 1129 # but we have no other source. 1130 1131 # From Germn Poo-Caamao (2008-03-03): 1132 # Due to drought, Chile extends Daylight Time in three weeks. This 1133 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1134 # and Saturday 3/29 at 22:00 for Pacific/Easter) 1135 # The Supreme Decree is located at 1136 # http://www.shoa.cl/servicios/supremo316.pdf 1137 # and the instructions for 2008 are located in: 1138 # http://www.horaoficial.cl/cambio.htm 1139 1140 # From Jos Miguel Garrido (2008-03-05): 1141 # ... 1142 # You could see the announces of the change on 1143 # http://www.shoa.cl/noticias/2008/04hora/hora.htm 1144 1145 # From Angel Chiang (2010-03-04): 1146 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1147 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1148 # (in Spanish, last paragraph). 1149 # 1150 # This is breaking news. There should be more information available later. 1151 1152 # From Arthur David Olson (2010-03-06): 1153 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1154 1155 # From Glenn Eychaner (2011-03-02): 1156 # It appears that the Chilean government has decided to postpone the 1157 # change from summer time to winter time again, by three weeks to April 1158 # 2nd: 1159 # http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651 1160 # 1161 # This is not yet reflected in the official "cambio de hora" site, but 1162 # probably will be soon: 1163 # http://www.horaoficial.cl/cambio.htm 1164 1165 # From Arthur David Olson (2011-03-02): 1166 # The emol.com article mentions a water shortage as the cause of the 1167 # postponement, which may mean that it's not a permanent change. 1168 1169 # From Glenn Eychaner (2011-03-28): 1170 # The article: 1171 # http://diario.elmercurio.com/2011/03/28/_portada/_portada/noticias/7565897A-CA86-49E6-9E03-660B21A4883E.htm?id=3D{7565897A-CA86-49E6-9E03-660B21A4883E} 1172 # 1173 # In English: 1174 # Chile's clocks will go back an hour this year on the 7th of May instead 1175 # of this Saturday. They will go forward again the 3rd Saturday in 1176 # August, not in October as they have since 1968. This is a pilot plan 1177 # which will be reevaluated in 2012. 1178 1179 # From Mauricio Parada (2012-02-22), translated by Glenn Eychaner (2012-02-23): 1180 # As stated in the website of the Chilean Energy Ministry 1181 # http://www.minenergia.cl/ministerio/noticias/generales/gobierno-anuncia-fechas-de-cambio-de.html 1182 # The Chilean Government has decided to postpone the entrance into winter time 1183 # (to leave DST) from March 11 2012 to April 28th 2012. The decision has not 1184 # been yet formalized but it will within the next days. 1185 # Quote from the website communication: 1186 # 1187 # 6. For the year 2012, the dates of entry into winter time will be as follows: 1188 # a. Saturday April 28, 2012, clocks should go back 60 minutes; that is, at 1189 # 23:59:59, instead of passing to 0:00, the time should be adjusted to be 23:00 1190 # of the same day. 1191 # b. Saturday, September 1, 2012, clocks should go forward 60 minutes; that is, 1192 # at 23:59:59, instead of passing to 0:00, the time should be adjusted to be 1193 # 01:00 on September 2. 1194 1195 # From Steffen Thorsen (2013-02-15): 1196 # According to several news sources, Chile has extended DST this year, 1197 # they will end DST later and start DST earlier than planned. They 1198 # hope to save energy. The new end date is 2013-04-28 00:00 and new 1199 # start date is 2013-09-08 00:00.... 1200 # http://www.gob.cl/informa/2013/02/15/gobierno-anuncia-fechas-de-cambio-de-hora-para-el-ano-2013.htm 1201 1202 # From Jos Miguel Garrido (2014-02-19): 1203 # Today appeared in the Diario Oficial a decree amending the time change 1204 # dates to 2014. 1205 # DST End: last Saturday of April 2014 (Sun 27 Apr 2014 03:00 UTC) 1206 # DST Start: first Saturday of September 2014 (Sun 07 Sep 2014 04:00 UTC) 1207 # http://www.diariooficial.interior.gob.cl//media/2014/02/19/do-20140219.pdf 1208 1209 # NOTE: ChileAQ rules for Antarctic bases are stored separately in the 1210 # 'antarctica' file. 1211 1212 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1213 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1214 Rule Chile 1928 1932 - Apr 1 0:00 0 - 1215 Rule Chile 1942 only - Jun 1 4:00u 0 - 1216 Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1217 Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1218 Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1219 Rule Chile 1947 only - Apr 1 4:00u 0 - 1220 Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1221 Rule Chile 1969 only - Mar 30 3:00u 0 - 1222 Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1223 Rule Chile 1970 only - Mar 29 3:00u 0 - 1224 Rule Chile 1971 only - Mar 14 3:00u 0 - 1225 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1226 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1227 Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1228 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1229 Rule Chile 1987 only - Apr 12 3:00u 0 - 1230 Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1231 Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1232 Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1233 Rule Chile 1990 only - Mar 18 3:00u 0 - 1234 Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1235 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1236 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1237 Rule Chile 1997 only - Mar 30 3:00u 0 - 1238 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1239 Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1240 Rule Chile 1999 only - Apr 4 3:00u 0 - 1241 Rule Chile 1999 2010 - Oct Sun>=9 4:00u 1:00 S 1242 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1243 # N.B.: the end of March 29 in Chile is March 30 in Universal time, 1244 # which is used below in specifying the transition. 1245 Rule Chile 2008 only - Mar 30 3:00u 0 - 1246 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1247 Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - 1248 Rule Chile 2011 only - May Sun>=2 3:00u 0 - 1249 Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S 1250 Rule Chile 2012 max - Apr Sun>=23 3:00u 0 - 1251 Rule Chile 2012 max - Sep Sun>=2 4:00u 1:00 S 1252 # IATA SSIM anomalies: (1992-02) says 1992-03-14; 1253 # (1996-09) says 1998-03-08. Ignore these. 1254 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1255 Zone America/Santiago -4:42:46 - LMT 1890 1256 -4:42:46 - SMT 1910 # Santiago Mean Time 1257 -5:00 - CLT 1916 Jul 1 # Chile Time 1258 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1259 -4:00 - CLT 1919 Jul 1 # Chile Time 1260 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1261 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1262 -4:00 Chile CL%sT 1263 Zone Pacific/Easter -7:17:44 - LMT 1890 1264 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1265 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter Time 1266 -6:00 Chile EAS%sT 1267 # 1268 # Salas y Gmez Island is uninhabited. 1269 # Other Chilean locations, including Juan Fernndez Is, Desventuradas Is, 1270 # and Antarctic bases, are like America/Santiago. 1271 1272 # Colombia 1273 1274 # Milne gives 4:56:16.4 for Bogot time in 1899; round to nearest. He writes, 1275 # "A variation of fifteen minutes in the public clocks of Bogota is not rare." 1276 1277 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1278 Rule CO 1992 only - May 3 0:00 1:00 S 1279 Rule CO 1993 only - Apr 4 0:00 0 - 1280 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1281 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 1282 -4:56:16 - BMT 1914 Nov 23 # Bogot Mean Time 1283 -5:00 CO CO%sT # Colombia Time 1284 # Malpelo, Providencia, San Andres 1285 # no information; probably like America/Bogota 1286 1287 # Curaao 1288 1289 # Milne gives 4:35:46.9 for Curaao mean time; round to nearest. 1290 # 1291 # From Paul Eggert (2006-03-22): 1292 # Shanks & Pottenger say that The Bottom and Philipsburg have been at 1293 # -4:00 since standard time was introduced on 1912-03-02; and that 1294 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1295 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1296 # Saba Island has been like Curaao. 1297 # This all predates our 1970 cutoff, though. 1298 # 1299 # By July 2007 Curaao and St Maarten are planned to become 1300 # associated states within the Netherlands, much like Aruba; 1301 # Bonaire, Saba and St Eustatius would become directly part of the 1302 # Netherlands as Kingdom Islands. This won't affect their time zones 1303 # though, as far as we know. 1304 # 1305 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1306 Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad 1307 -4:30 - ANT 1965 # Netherlands Antilles Time 1308 -4:00 - AST 1309 1310 # From Arthur David Olson (2011-06-15): 1311 # use links for places with new iso3166 codes. 1312 # The name "Lower Prince's Quarter" is both longer than fourteen characters 1313 # and contains an apostrophe; use "Lower_Princes" below. 1314 1315 Link America/Curacao America/Lower_Princes # Sint Maarten 1316 Link America/Curacao America/Kralendijk # Caribbean Netherlands 1317 1318 # Ecuador 1319 # 1320 # Milne says the Central and South American Telegraph Company used -5:24:15. 1321 # 1322 # From Paul Eggert (2007-03-04): 1323 # Apparently Ecuador had a failed experiment with DST in 1992. 1324 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1325 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1326 # talk about "hora Sixto". Leave this alone for now, as we have no data. 1327 # 1328 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1329 Zone America/Guayaquil -5:19:20 - LMT 1890 1330 -5:14:00 - QMT 1931 # Quito Mean Time 1331 -5:00 - ECT # Ecuador Time 1332 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1333 -5:00 - ECT 1986 1334 -6:00 - GALT # Galpagos Time 1335 1336 # Falklands 1337 1338 # From Paul Eggert (2006-03-22): 1339 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1340 # the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1341 1342 # From Falkland Islands Government Office, London (2001-01-22) 1343 # via Jesper Nrgaard: 1344 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1345 # April 2001 and advance one hour to summer time at 2 am on Sunday 2 1346 # September. It is anticipated that the clocks will revert back at 2 1347 # am on Sunday 21 April 2002 and advance to summer time at 2 am on 1348 # Sunday 1 September. 1349 1350 # From Rives McDow (2001-02-13): 1351 # 1352 # I have communicated several times with people there, and the last 1353 # time I had communications that was helpful was in 1998. Here is 1354 # what was said then: 1355 # 1356 # "The general rule was that Stanley used daylight saving and the Camp 1357 # did not. However for various reasons many people in the Camp have 1358 # started to use daylight saving (known locally as 'Stanley Time') 1359 # There is no rule as to who uses daylight saving - it is a matter of 1360 # personal choice and so it is impossible to draw a map showing who 1361 # uses it and who does not. Any list would be out of date as soon as 1362 # it was produced. This year daylight saving ended on April 18/19th 1363 # and started again on September 12/13th. I do not know what the rule 1364 # is, but can find out if you like. We do not change at the same time 1365 # as UK or Chile." 1366 # 1367 # I did have in my notes that the rule was "Second Saturday in Sep at 1368 # 0:00 until third Saturday in Apr at 0:00". I think that this does 1369 # not agree in some cases with Shanks; is this true? 1370 # 1371 # Also, there is no mention in the list that some areas in the 1372 # Falklands do not use DST. I have found in my communications there 1373 # that these areas are on the western half of East Falkland and all of 1374 # West Falkland. Stanley is the only place that consistently observes 1375 # DST. Again, as in other places in the world, the farmers don't like 1376 # it. West Falkland is almost entirely sheep farmers. 1377 # 1378 # I know one lady there that keeps a list of which farm keeps DST and 1379 # which doesn't each year. She runs a shop in Stanley, and says that 1380 # the list changes each year. She uses it to communicate to her 1381 # customers, catching them when they are home for lunch or dinner. 1382 1383 # From Paul Eggert (2001-03-05): 1384 # For now, we'll just record the time in Stanley, since we have no 1385 # better info. 1386 1387 # From Steffen Thorsen (2011-04-01): 1388 # The Falkland Islands will not turn back clocks this winter, but stay on 1389 # daylight saving time. 1390 # 1391 # One source: 1392 # http://www.falklandnews.com/public/story.cfm?get=5914&source=3 1393 # 1394 # We have gotten this confirmed by a clerk of the legislative assembly: 1395 # Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the 1396 # third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 1397 # hours) on the first Sunday of September at 0200hrs. 1398 # 1399 # IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands 1400 # will not revert to local mean time, but clocks will remain on Summer 1401 # time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term 1402 # change to local time following the trial period will be notified. 1403 # 1404 # From Andrew Newman (2012-02-24) 1405 # A letter from Justin McPhee, Chief Executive, 1406 # Cable & Wireless Falkland Islands (dated 2012-02-22) 1407 # states... 1408 # The current Atlantic/Stanley entry under South America expects the 1409 # clocks to go back to standard Falklands Time (FKT) on the 15th April. 1410 # The database entry states that in 2011 Stanley was staying on fixed 1411 # summer time on a trial basis only. FIG need to contact IANA and/or 1412 # the maintainers of the database to inform them we're adopting 1413 # the same policy this year and suggest recommendations for future years. 1414 # 1415 # For now we will assume permanent summer time for the Falklands 1416 # until advised differently (to apply for 2012 and beyond, after the 2011 1417 # experiment was apparently successful.) 1418 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1419 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1420 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1421 Rule Falk 1939 only - Oct 1 0:00 1:00 S 1422 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1423 Rule Falk 1943 only - Jan 1 0:00 0 - 1424 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1425 Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1426 Rule Falk 1984 only - Sep 16 0:00 1:00 S 1427 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1428 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1429 Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - 1430 Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S 1431 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1432 Zone Atlantic/Stanley -3:51:24 - LMT 1890 1433 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1434 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1435 -3:00 Falk FK%sT 1985 Sep 15 1436 -4:00 Falk FK%sT 2010 Sep 5 2:00 1437 -3:00 - FKST 1438 1439 # French Guiana 1440 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1441 Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1442 -4:00 - GFT 1967 Oct # French Guiana Time 1443 -3:00 - GFT 1444 1445 # Guyana 1446 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1447 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1448 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1449 -3:45 - GYT 1975 Jul 31 # Guyana Time 1450 -3:00 - GYT 1991 1451 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1452 -4:00 - GYT 1453 1454 # Paraguay 1455 # 1456 # From Paul Eggert (2006-03-22): 1457 # Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, 1458 # and autumn transitions are 00:00 -> 23:00. Go with pre-1999 1459 # editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1460 # 1461 # From Waldemar Villamayor-Venialbo (2013-09-20): 1462 # No time of the day is established for the adjustment, so people normally 1463 # adjust their clocks at 0 hour of the given dates. 1464 # 1465 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1466 Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1467 Rule Para 1975 1978 - Mar 1 0:00 0 - 1468 Rule Para 1979 1991 - Apr 1 0:00 0 - 1469 Rule Para 1989 only - Oct 22 0:00 1:00 S 1470 Rule Para 1990 only - Oct 1 0:00 1:00 S 1471 Rule Para 1991 only - Oct 6 0:00 1:00 S 1472 Rule Para 1992 only - Mar 1 0:00 0 - 1473 Rule Para 1992 only - Oct 5 0:00 1:00 S 1474 Rule Para 1993 only - Mar 31 0:00 0 - 1475 Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1476 Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1477 Rule Para 1996 only - Mar 1 0:00 0 - 1478 # IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1479 # From Steffen Thorsen (2000-10-02): 1480 # I have three independent reports that Paraguay changed to DST this Sunday 1481 # (10-01). 1482 # 1483 # Translated by Gwillim Law (2001-02-27) from 1484 # Noticias, a daily paper in Asuncin, Paraguay (2000-10-01): 1485 # http://www.diarionoticias.com.py/011000/nacional/naciona1.htm 1486 # Starting at 0:00 today, the clock will be set forward 60 minutes, in 1487 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1488 # system has been operating for several years. Formerly there was a separate 1489 # decree each year; the new law has the same effect, but permanently. Every 1490 # year, the time will change on the first Sunday of October; likewise, the 1491 # clock will be set back on the first Sunday of March. 1492 # 1493 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1494 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1495 Rule Para 1997 only - Feb lastSun 0:00 0 - 1496 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1497 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1498 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1499 # From Rives McDow (2002-02-28): 1500 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1501 # dst method to be from the first Sunday in September to the first Sunday in 1502 # April. 1503 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1504 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1505 # 1506 # From Jesper Nrgaard Welen (2005-01-02): 1507 # There are several sources that claim that Paraguay made 1508 # a timezone rule change in autumn 2004. 1509 # From Steffen Thorsen (2005-01-05): 1510 # Decree 1,867 (2004-03-05) 1511 # From Carlos Ral Perasso via Jesper Nrgaard Welen (2006-10-13) 1512 # http://www.presidencia.gov.py/decretos/D1867.pdf 1513 Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1514 Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1515 # From Carlos Ral Perasso (2010-02-18): 1516 # By decree number 3958 issued yesterday 1517 # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1518 # Paraguay changes its DST schedule, postponing the March rule to April and 1519 # modifying the October date. The decree reads: 1520 # ... 1521 # Art. 1. It is hereby established that from the second Sunday of the month of 1522 # April of this year (2010), the official time is to be set back 60 minutes, 1523 # and that on the first Sunday of the month of October, it is to be set 1524 # forward 60 minutes, in all the territory of the Paraguayan Republic. 1525 # ... 1526 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1527 Rule Para 2010 2012 - Apr Sun>=8 0:00 0 - 1528 # 1529 # From Steffen Thorsen (2013-03-07): 1530 # Paraguay will end DST on 2013-03-24 00:00.... 1531 # http://www.ande.gov.py/interna.php?id=1075 1532 # 1533 # From Carlos Ral Perasso (2013-03-15): 1534 # The change in Paraguay is now final. Decree number 10780 1535 # http://www.presidencia.gov.py/uploads/pdf/presidencia-3b86ff4b691c79d4f5927ca964922ec74772ce857c02ca054a52a37b49afc7fb.pdf 1536 # From Carlos Ral Perasso (2014-02-28): 1537 # Decree 1264 can be found at: 1538 # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf 1539 Rule Para 2013 max - Mar Sun>=22 0:00 0 - 1540 1541 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1542 Zone America/Asuncion -3:50:40 - LMT 1890 1543 -3:50:40 - AMT 1931 Oct 10 # Asuncin Mean Time 1544 -4:00 - PYT 1972 Oct # Paraguay Time 1545 -3:00 - PYT 1974 Apr 1546 -4:00 Para PY%sT 1547 1548 # Peru 1549 # 1550 # From Evelyn C. Leeper via Mark Brader (2003-10-26) 1551 # <news:xrGmb.39935$gA1.13896113 (a] news4.srv.hcvlny.cv.net>: 1552 # When we were in Peru in 1985-1986, they apparently switched over 1553 # sometime between December 29 and January 3 while we were on the Amazon. 1554 # 1555 # From Paul Eggert (2006-03-22): 1556 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1557 1558 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1559 Rule Peru 1938 only - Jan 1 0:00 1:00 S 1560 Rule Peru 1938 only - Apr 1 0:00 0 - 1561 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1562 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1563 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1564 Rule Peru 1986 1987 - Apr 1 0:00 0 - 1565 Rule Peru 1990 only - Jan 1 0:00 1:00 S 1566 Rule Peru 1990 only - Apr 1 0:00 0 - 1567 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1568 Rule Peru 1994 only - Jan 1 0:00 1:00 S 1569 Rule Peru 1994 only - Apr 1 0:00 0 - 1570 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1571 Zone America/Lima -5:08:12 - LMT 1890 1572 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1573 -5:00 Peru PE%sT # Peru Time 1574 1575 # South Georgia 1576 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1577 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1578 -2:00 - GST # South Georgia Time 1579 1580 # South Sandwich Is 1581 # uninhabited; scientific personnel have wintered 1582 1583 # Suriname 1584 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1585 Zone America/Paramaribo -3:40:40 - LMT 1911 1586 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1587 -3:40:36 - PMT 1945 Oct # The capital moved? 1588 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1589 -3:30 - SRT 1984 Oct # Suriname Time 1590 -3:00 - SRT 1591 1592 # Trinidad and Tobago 1593 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1594 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1595 -4:00 - AST 1596 1597 # These all agree with Trinidad and Tobago since 1970. 1598 Link America/Port_of_Spain America/Anguilla 1599 Link America/Port_of_Spain America/Dominica 1600 Link America/Port_of_Spain America/Grenada 1601 Link America/Port_of_Spain America/Guadeloupe 1602 Link America/Port_of_Spain America/Marigot # St Martin (French part) 1603 Link America/Port_of_Spain America/Montserrat 1604 Link America/Port_of_Spain America/St_Barthelemy # St Barthlemy 1605 Link America/Port_of_Spain America/St_Kitts # St Kitts & Nevis 1606 Link America/Port_of_Spain America/St_Lucia 1607 Link America/Port_of_Spain America/St_Thomas # Virgin Islands (US) 1608 Link America/Port_of_Spain America/St_Vincent 1609 Link America/Port_of_Spain America/Tortola # Virgin Islands (UK) 1610 1611 # Uruguay 1612 # From Paul Eggert (1993-11-18): 1613 # Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1614 # From Shanks & Pottenger: 1615 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1616 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1617 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1618 Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1619 Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1620 Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1621 # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1622 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1623 Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1624 Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1625 # Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1626 Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1627 # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1628 # and 1943 Apr 13 "to present time"; go with Shanks & Pottenger. 1629 Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1630 Rule Uruguay 1942 only - Jan 1 0:00 0 - 1631 Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1632 Rule Uruguay 1943 only - Mar 14 0:00 0 - 1633 Rule Uruguay 1959 only - May 24 0:00 1:00 S 1634 Rule Uruguay 1959 only - Nov 15 0:00 0 - 1635 Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1636 Rule Uruguay 1960 only - Mar 6 0:00 0 - 1637 Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1638 Rule Uruguay 1965 only - Sep 26 0:00 0 - 1639 Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1640 Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1641 Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1642 Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1643 Rule Uruguay 1972 only - Aug 15 0:00 0 - 1644 Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1645 Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1646 Rule Uruguay 1976 only - Oct 1 0:00 0 - 1647 Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1648 Rule Uruguay 1978 only - Apr 1 0:00 0 - 1649 Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1650 Rule Uruguay 1980 only - May 1 0:00 0 - 1651 Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1652 Rule Uruguay 1988 only - Mar 14 0:00 0 - 1653 Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1654 Rule Uruguay 1989 only - Mar 12 0:00 0 - 1655 Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1656 # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1657 # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1658 Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1659 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1660 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1661 Rule Uruguay 1993 only - Feb 28 0:00 0 - 1662 # From Eduardo Cota (2004-09-20): 1663 # The Uruguayan government has decreed a change in the local time.... 1664 # http://www.presidencia.gub.uy/decretos/2004091502.htm 1665 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1666 # From Steffen Thorsen (2005-03-11): 1667 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1668 # save energy ... it was postponed two weeks.... 1669 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1670 Rule Uruguay 2005 only - Mar 27 2:00 0 - 1671 # From Eduardo Cota (2005-09-27): 1672 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1673 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1674 # 02:00 local time, official time in Uruguay will be at GMT -2. 1675 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1676 Rule Uruguay 2006 only - Mar 12 2:00 0 - 1677 # From Jesper Nrgaard Welen (2006-09-06): 1678 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1679 Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1680 Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1681 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1682 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1683 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1684 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1685 -3:00 Uruguay UY%sT 1686 1687 # Venezuela 1688 # 1689 # From John Stainforth (2007-11-28): 1690 # ... the change for Venezuela originally expected for 2007-12-31 has 1691 # been brought forward to 2007-12-09. The official announcement was 1692 # published today in the "Gaceta Oficial de la Repblica Bolivariana 1693 # de Venezuela, nmero 38.819" (official document for all laws or 1694 # resolution publication) 1695 # http://www.globovision.com/news.php?nid=72208 1696 1697 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1698 Zone America/Caracas -4:27:44 - LMT 1890 1699 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1700 -4:30 - VET 1965 # Venezuela Time 1701 -4:00 - VET 2007 Dec 9 3:00 1702 -4:30 - VET 1703
Indexes created Mon May 04 00:23:20 UTC 2026