1 # <pre> 2 # @(#)southamerica 8.44 3 # This file is in the public domain, so clarified as of 4 # 2009-05-17 by Arthur David Olson. 5 6 # This data is by no means authoritative; if you think you know better, 7 # go ahead and edit the file (and please send any changes to 8 # tz (a] elsie.nci.nih.gov for general use in the future). 9 10 # From Paul Eggert (2006-03-22): 11 # A good source for time zone historical data outside the U.S. is 12 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 13 # San Diego: ACS Publications, Inc. (2003). 14 # 15 # Gwillim Law writes that a good source 16 # for recent time zone data is the International Air Transport 17 # Association's Standard Schedules Information Manual (IATA SSIM), 18 # published semiannually. Law sent in several helpful summaries 19 # of the IATA's data after 1990. 20 # 21 # Except where otherwise noted, Shanks & Pottenger is the source for 22 # entries through 1990, and IATA SSIM is the source for entries afterwards. 23 # 24 # Earlier editions of these tables used the North American style (e.g. ARST and 25 # ARDT for Argentine Standard and Daylight Time), but the following quote 26 # suggests that it's better to use European style (e.g. ART and ARST). 27 # I suggest the use of _Summer time_ instead of the more cumbersome 28 # _daylight-saving time_. _Summer time_ seems to be in general use 29 # in Europe and South America. 30 # -- E O Cutler, _New York Times_ (1937-02-14), quoted in 31 # H L Mencken, _The American Language: Supplement I_ (1960), p 466 32 # 33 # Earlier editions of these tables also used the North American style 34 # for time zones in Brazil, but this was incorrect, as Brazilians say 35 # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 36 # the railroad sector, writes (1999-07-06): 37 # The subject of time zones is currently a matter of discussion/debate in 38 # Brazil. Let's say that "the Brasilia time" is considered the 39 # "official time" because Brasilia is the capital city. 40 # The other three time zones are called "Brasilia time "minus one" or 41 # "plus one" or "plus two". As far as I know there is no such 42 # name/designation as "Eastern Time" or "Central Time". 43 # So I invented the following (English-language) abbreviations for now. 44 # Corrections are welcome! 45 # std dst 46 # -2:00 FNT FNST Fernando de Noronha 47 # -3:00 BRT BRST Brasilia 48 # -4:00 AMT AMST Amazon 49 # -5:00 ACT ACST Acre 50 51 ############################################################################### 52 53 ############################################################################### 54 55 # Argentina 56 57 # From Bob Devine (1988-01-28): 58 # Argentina: first Sunday in October to first Sunday in April since 1976. 59 # Double Summer time from 1969 to 1974. Switches at midnight. 60 61 # From U. S. Naval Observatory (1988-01-199): 62 # ARGENTINA 3 H BEHIND UTC 63 64 # From Hernan G. Otero (1995-06-26): 65 # I am sending modifications to the Argentine time zone table... 66 # AR was chosen because they are the ISO letters that represent Argentina. 67 68 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 69 Rule Arg 1930 only - Dec 1 0:00 1:00 S 70 Rule Arg 1931 only - Apr 1 0:00 0 - 71 Rule Arg 1931 only - Oct 15 0:00 1:00 S 72 Rule Arg 1932 1940 - Mar 1 0:00 0 - 73 Rule Arg 1932 1939 - Nov 1 0:00 1:00 S 74 Rule Arg 1940 only - Jul 1 0:00 1:00 S 75 Rule Arg 1941 only - Jun 15 0:00 0 - 76 Rule Arg 1941 only - Oct 15 0:00 1:00 S 77 Rule Arg 1943 only - Aug 1 0:00 0 - 78 Rule Arg 1943 only - Oct 15 0:00 1:00 S 79 Rule Arg 1946 only - Mar 1 0:00 0 - 80 Rule Arg 1946 only - Oct 1 0:00 1:00 S 81 Rule Arg 1963 only - Oct 1 0:00 0 - 82 Rule Arg 1963 only - Dec 15 0:00 1:00 S 83 Rule Arg 1964 1966 - Mar 1 0:00 0 - 84 Rule Arg 1964 1966 - Oct 15 0:00 1:00 S 85 Rule Arg 1967 only - Apr 2 0:00 0 - 86 Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 87 Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 88 Rule Arg 1974 only - Jan 23 0:00 1:00 S 89 Rule Arg 1974 only - May 1 0:00 0 - 90 Rule Arg 1988 only - Dec 1 0:00 1:00 S 91 # 92 # From Hernan G. Otero (1995-06-26): 93 # These corrections were contributed by InterSoft Argentina S.A., 94 # obtaining the data from the: 95 # Talleres de Hidrografia Naval Argentina 96 # (Argentine Naval Hydrography Institute) 97 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 98 Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 99 # 100 # From Hernan G. Otero (1995-06-26): 101 # From this moment on, the law that mandated the daylight saving 102 # time corrections was derogated and no more modifications 103 # to the time zones (for daylight saving) are now made. 104 # 105 # From Rives McDow (2000-01-10): 106 # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 107 # which did not result in the switch of a time zone, as they stayed 9 hours 108 # from the International Date Line. 109 Rule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 110 # From Paul Eggert (2007-12-28): 111 # DST was set to expire on March 5, not March 3, but since it was converted 112 # to standard time on March 3 it's more convenient for us to pretend that 113 # it ended on March 3. 114 Rule Arg 2000 only - Mar 3 0:00 0 - 115 # 116 # From Peter Gradelski via Steffen Thorsen (2000-03-01): 117 # We just checked with our Sao Paulo office and they say the government of 118 # Argentina decided not to become one of the countries that go on or off DST. 119 # So Buenos Aires should be -3 hours from GMT at all times. 120 # 121 # From Fabian L. Arce Jofre (2000-04-04): 122 # The law that claimed DST for Argentina was derogated by President Fernando 123 # de la Rua on March 2, 2000, because it would make people spend more energy 124 # in the winter time, rather than less. The change took effect on March 3. 125 # 126 # From Mariano Absatz (2001-06-06): 127 # one of the major newspapers here in Argentina said that the 1999 128 # Timezone Law (which never was effectively applied) will (would?) be 129 # in effect.... The article is at 130 # http://ar.clarin.com/diario/2001-06-06/e-01701.htm 131 # ... The Law itself is "Ley No 25155", sanctioned on 1999-08-25, enacted 132 # 1999-09-17, and published 1999-09-21. The official publication is at: 133 # http://www.boletin.jus.gov.ar/BON/Primera/1999/09-Septiembre/21/PDF/BO21-09-99LEG.PDF 134 # Regretfully, you have to subscribe (and pay) for the on-line version.... 135 # 136 # (2001-06-12): 137 # the timezone for Argentina will not change next Sunday. 138 # Apparently it will do so on Sunday 24th.... 139 # http://ar.clarin.com/diario/2001-06-12/s-03501.htm 140 # 141 # (2001-06-25): 142 # Last Friday (yes, the last working day before the date of the change), the 143 # Senate annulled the 1999 law that introduced the changes later postponed. 144 # http://www.clarin.com.ar/diario/2001-06-22/s-03601.htm 145 # It remains the vote of the Deputies..., but it will be the same.... 146 # This kind of things had always been done this way in Argentina. 147 # We are still -03:00 all year round in all of the country. 148 # 149 # From Steffen Thorsen (2007-12-21): 150 # A user (Leonardo Chaim) reported that Argentina will adopt DST.... 151 # all of the country (all Zone-entries) are affected. News reports like 152 # http://www.lanacion.com.ar/opinion/nota.asp?nota_id=973037 indicate 153 # that Argentina will use DST next year as well, from October to 154 # March, although exact rules are not given. 155 # 156 # From Jesper Norgaard Welen (2007-12-26) 157 # The last hurdle of Argentina DST is over, the proposal was approved in 158 # the lower chamber too (Deputados) with a vote 192 for and 2 against. 159 # By the way thanks to Mariano Absatz and Daniel Mario Vega for the link to 160 # the original scanned proposal, where the dates and the zero hours are 161 # clear and unambiguous...This is the article about final approval: 162 # <a href="http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996"> 163 # http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 164 # </a> 165 # 166 # From Paul Eggert (2007-12-22): 167 # For dates after mid-2008, the following rules are my guesses and 168 # are quite possibly wrong, but are more likely than no DST at all. 169 170 # From Alexander Krivenyshev (2008-09-05): 171 # As per message from Carlos Alberto Fonseca Arauz (Nicaragua), 172 # Argentina will start DST on Sunday October 19, 2008. 173 # 174 # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina03.html"> 175 # http://www.worldtimezone.com/dst_news/dst_news_argentina03.html 176 # </a> 177 # OR 178 # <a href="http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish)"> 179 # http://www.impulsobaires.com.ar/nota.php?id=57832 (in spanish) 180 # </a> 181 182 # From Rodrigo Severo (2008-10-06): 183 # Here is some info available at a Gentoo bug related to TZ on Argentina's DST: 184 # ... 185 # ------- Comment #1 from [jmdocile] 2008-10-06 16:28 0000 ------- 186 # Hi, there is a problem with timezone-data-2008e and maybe with 187 # timezone-data-2008f 188 # Argentinian law [Number] 25.155 is no longer valid. 189 # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm"> 190 # http://www.infoleg.gov.ar/infolegInternet/anexos/60000-64999/60036/norma.htm 191 # </a> 192 # The new one is law [Number] 26.350 193 # <a href="http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm"> 194 # http://www.infoleg.gov.ar/infolegInternet/anexos/135000-139999/136191/norma.htm 195 # </a> 196 # So there is no summer time in Argentina for now. 197 198 # From Mariano Absatz (2008-10-20): 199 # Decree 1693/2008 applies Law 26.350 for the summer 2008/2009 establishing DST in Argentina 200 # From 2008-10-19 until 2009-03-15 201 # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01"> 202 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=16102008&pi=3&pf=4&s=0&sec=01 203 # </a> 204 # 205 # Decree 1705/2008 excepting 12 Provinces from applying DST in the summer 2008/2009: 206 # Catamarca, La Rioja, Mendoza, Salta, San Juan, San Luis, La Pampa, Neuquen, Rio Negro, Chubut, Santa Cruz 207 # and Tierra del Fuego 208 # <a href="http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01"> 209 # http://www.boletinoficial.gov.ar/Bora.Portal/CustomControls/PdfContent.aspx?fp=17102008&pi=1&pf=1&s=0&sec=01 210 # </a> 211 # 212 # Press release 235 dated Saturday October 18th, from the Government of the Province of Jujuy saying 213 # it will not apply DST either (even when it was not included in Decree 1705/2008) 214 # <a href="http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc"> 215 # http://www.jujuy.gov.ar/index2/partes_prensa/18_10_08/235-181008.doc 216 # </a> 217 218 # From fullinet (2009-10-18): 219 # As announced in 220 # <a hef="http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356"> 221 # http://www.argentina.gob.ar/argentina/portal/paginas.dhtml?pagina=356 222 # </a> 223 # (an official .gob.ar) under title: "Sin Cambio de Hora" (english: "No hour change") 224 # 225 # "Por el momento, el Gobierno Nacional resolvio no modificar la hora 226 # oficial, decision que estaba en estudio para su implementacion el 227 # domingo 18 de octubre. Desde el Ministerio de Planificacion se anuncio 228 # que la Argentina hoy, en estas condiciones meteorologicas, no necesita 229 # la modificacion del huso horario, ya que 2009 nos encuentra con 230 # crecimiento en la produccion y distribucion energetica." 231 232 Rule Arg 2007 only - Dec 30 0:00 1:00 S 233 Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 - 234 Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S 235 236 # From Mariano Absatz (2004-05-21): 237 # Today it was officially published that the Province of Mendoza is changing 238 # its timezone this winter... starting tomorrow night.... 239 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040521-27158-normas.pdf 240 # From Paul Eggert (2004-05-24): 241 # It's Law No. 7,210. This change is due to a public power emergency, so for 242 # now we'll assume it's for this year only. 243 # 244 # From Paul Eggert (2006-03-22): 245 # <a href="http://www.spicasc.net/horvera.html"> 246 # Hora de verano para la Republica Argentina (2003-06-08) 247 # </a> says that standard time in Argentina from 1894-10-31 248 # to 1920-05-01 was -4:16:48.25. Go with this more-precise value 249 # over Shanks & Pottenger. 250 # 251 # From Mariano Absatz (2004-06-05): 252 # These media articles from a major newspaper mostly cover the current state: 253 # http://www.lanacion.com.ar/04/05/27/de_604825.asp 254 # http://www.lanacion.com.ar/04/05/28/de_605203.asp 255 # 256 # The following eight (8) provinces pulled clocks back to UTC-04:00 at 257 # midnight Monday May 31st. (that is, the night between 05/31 and 06/01). 258 # Apparently, all nine provinces would go back to UTC-03:00 at the same 259 # time in October 17th. 260 # 261 # Catamarca, Chubut, La Rioja, San Juan, San Luis, Santa Cruz, 262 # Tierra del Fuego, Tucuman. 263 # 264 # From Mariano Absatz (2004-06-14): 265 # ... this weekend, the Province of Tucuman decided it'd go back to UTC-03:00 266 # yesterday midnight (that is, at 24:00 Saturday 12th), since the people's 267 # annoyance with the change is much higher than the power savings obtained.... 268 # 269 # From Gwillim Law (2004-06-14): 270 # http://www.lanacion.com.ar/04/06/10/de_609078.asp ... 271 # "The time change in Tierra del Fuego was a conflicted decision from 272 # the start. The government had decreed that the measure would take 273 # effect on June 1, but a normative error forced the new time to begin 274 # three days earlier, from a Saturday to a Sunday.... 275 # Our understanding was that the change was originally scheduled to take place 276 # on June 1 at 00:00 in Chubut, Santa Cruz, Tierra del Fuego (and some other 277 # provinces). Sunday was May 30, only two days earlier. So the article 278 # contains a contradiction. I would give more credence to the Saturday/Sunday 279 # date than the "three days earlier" phrase, and conclude that Tierra del 280 # Fuego set its clocks back at 2004-05-30 00:00. 281 # 282 # From Steffen Thorsen (2004-10-05): 283 # The previous law 7210 which changed the province of Mendoza's time zone 284 # back in May have been modified slightly in a new law 7277, which set the 285 # new end date to 2004-09-26 (original date was 2004-10-17). 286 # http://www.gobernac.mendoza.gov.ar/boletin/pdf/20040924-27244-normas.pdf 287 # 288 # From Mariano Absatz (2004-10-05): 289 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between 290 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00 291 # at midnight between Saturday, July 24th and Sunday, July 25th.... 292 # http://www.sanjuan.gov.ar/prensa/archivo/000329.html 293 # http://www.sanjuan.gov.ar/prensa/archivo/000426.html 294 # http://www.sanjuan.gov.ar/prensa/archivo/000441.html 295 296 # From Alex Krivenyshev (2008-01-17): 297 # Here are articles that Argentina Province San Luis is planning to end DST 298 # as earlier as upcoming Monday January 21, 2008 or February 2008: 299 # 300 # Provincia argentina retrasa reloj y marca diferencia con resto del pais 301 # (Argentine Province delayed clock and mark difference with the rest of the 302 # country) 303 # <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel"> 304 # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4373&idtel 305 # </a> 306 # 307 # Es inminente que en San Luis atrasen una hora los relojes 308 # (It is imminent in San Luis clocks one hour delay) 309 # <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> 310 # http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 311 # </a> 312 # 313 # <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> 314 # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html 315 # </a> 316 317 # From Jesper Norgaard Welen (2008-01-18): 318 # The page of the San Luis provincial government 319 # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> 320 # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 321 # </a> 322 # confirms what Alex Krivenyshev has earlier sent to the tz 323 # emailing list about that San Luis plans to return to standard 324 # time much earlier than the rest of the country. It also 325 # confirms that upon request the provinces San Juan and Mendoza 326 # refused to follow San Luis in this change. 327 # 328 # The change is supposed to take place Monday the 21.st at 0:00 329 # hours. As far as I understand it if this goes ahead, we need 330 # a new timezone for San Luis (although there are also documented 331 # independent changes in the southamerica file of San Luis in 332 # 1990 and 1991 which has not been confirmed). 333 334 # From Jesper Norgaard Welen (2008-01-25): 335 # Unfortunately the below page has become defunct, about the San Luis 336 # time change. Perhaps because it now is part of a group of pages "Most 337 # important pages of 2008." 338 # 339 # You can use 340 # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> 341 # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 342 # </a> 343 # instead it seems. Or use "Buscador" from the main page of the San Luis 344 # government, and fill in "huso" and click OK, and you will get 3 pages 345 # from which the first one is identical to the above. 346 347 # From Mariano Absatz (2008-01-28): 348 # I can confirm that the Province of San Luis (and so far only that 349 # province) decided to go back to UTC-3 effective midnight Jan 20th 2008 350 # (that is, Monday 21st at 0:00 is the time the clocks were delayed back 351 # 1 hour), and they intend to keep UTC-3 as their timezone all year round 352 # (that is, unless they change their mind any minute now). 353 # 354 # So we'll have to add yet another city to 'southamerica' (I think San 355 # Luis city is the mos populated city in the Province, so it'd be 356 # America/Argentina/San_Luis... of course I can't remember if San Luis's 357 # history of particular changes goes along with Mendoza or San Juan :-( 358 # (I only remember not being able to collect hard facts about San Luis 359 # back in 2004, when these provinces changed to UTC-4 for a few days, I 360 # mailed them personally and never got an answer). 361 362 # From Paul Eggert (2008-06-30): 363 # Unless otherwise specified, data are from Shanks & Pottenger through 1992, 364 # from the IATA otherwise. As noted below, Shanks & Pottenger say that 365 # America/Cordoba split into 6 subregions during 1991/1992, one of which 366 # was America/San_Luis, but we haven't verified this yet so for now we'll 367 # keep America/Cordoba a single region rather than splitting it into the 368 # other 5 subregions. 369 370 # From Mariano Absatz (2009-03-13): 371 # Yesterday (with our usual 2-day notice) the Province of San Luis 372 # decided that next Sunday instead of "staying" @utc-03:00 they will go 373 # to utc-04:00 until the second Saturday in October... 374 # 375 # The press release is at 376 # <a href="http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102"> 377 # http://www.sanluis.gov.ar/SL/Paginas/NoticiaDetalle.asp?TemaId=1&InfoPrensaId=3102 378 # </a> 379 # (I couldn't find the decree, but 380 # <a href="http://www.sanluis.gov.ar"> 381 # www.sanluis.gov.ar 382 # <a/> 383 # is the official page for the Province Government). 384 # 385 # There's also a note in only one of the major national papers (La Nacin) at 386 # <a href="http://www.lanacion.com.ar/nota.asp?nota_id=1107912"> 387 # http://www.lanacion.com.ar/nota.asp?nota_id=1107912 388 # </a> 389 # 390 # The press release says: 391 # (...) anunci que el prximo domingo a las 00:00 los puntanos debern 392 # atrasar una hora sus relojes. 393 # 394 # A partir de entonces, San Luis establecer el huso horario propio de 395 # la Provincia. De esta manera, durante el periodo del calendario anual 396 # 2009, el cambio horario quedar comprendido entre las 00:00 del tercer 397 # domingo de marzo y las 24:00 del segundo sbado de octubre. 398 # Quick&dirty translation 399 # (...) announced that next Sunday, at 00:00, Puntanos (the San Luis 400 # inhabitants) will have to turn back one hour their clocks 401 # 402 # Since then, San Luis will establish its own Province timezone. Thus, 403 # during 2009, this timezone change will run from 00:00 the third Sunday 404 # in March until 24:00 of the second Saturday in October. 405 406 # From Mariano Absatz (2009-10-16): 407 # ...the Province of San Luis is a case in itself. 408 # 409 # The Law at 410 # <a href="http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276>" 411 # http://www.diputadossanluis.gov.ar/diputadosasp/paginas/verNorma.asp?NormaID=276 412 # </a> 413 # is ambiguous because establishes a calendar from the 2nd Sunday in 414 # October at 0:00 thru the 2nd Saturday in March at 24:00 and the 415 # complement of that starting on the 2nd Sunday of March at 0:00 and 416 # ending on the 2nd Saturday of March at 24:00. 417 # 418 # This clearly breaks every time the 1st of March or October is a Sunday. 419 # 420 # IMHO, the "spirit of the Law" is to make the changes at 0:00 on the 2nd 421 # Sunday of October and March. 422 # 423 # The problem is that the changes in the rest of the Provinces that did 424 # change in 2007/2008, were made according to the Federal Law and Decrees 425 # that did so on the 3rd Sunday of October and March. 426 # 427 # In fact, San Luis actually switched from UTC-4 to UTC-3 last Sunday 428 # (October 11th) at 0:00. 429 # 430 # So I guess a new set of rules, besides "Arg", must be made and the last 431 # America/Argentina/San_Luis entries should change to use these... 432 # 433 # I'm enclosing a patch that does what I say... regretfully, the San Luis 434 # timezone must be called "WART/WARST" even when most of the time (like, 435 # right now) WARST == ART... that is, since last Sunday, all the country 436 # is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest 437 # of the country calls it "ART". 438 # ... 439 440 # From Alexander Krivenyshev (2010-04-09): 441 # According to news reports from El Diario de la Republica Province San 442 # Luis, Argentina (standard time UTC-04) will keep Daylight Saving Time 443 # after April 11, 2010--will continue to have same time as rest of 444 # Argentina (UTC-3) (no DST). 445 # 446 # Confirmaron la prórroga del huso horario de verano (Spanish) 447 # <a href="http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9"> 448 # http://www.eldiariodelarepublica.com/index.php?option=com_content&task=view&id=29383&Itemid=9 449 # </a> 450 # or (some English translation): 451 # <a href="http://www.worldtimezone.com/dst_news/dst_news_argentina08.html"> 452 # http://www.worldtimezone.com/dst_news/dst_news_argentina08.html 453 # </a> 454 455 # From Mariano Absatz (2010-04-12): 456 # yes...I can confirm this...and given that San Luis keeps calling 457 # UTC-03:00 "summer time", we should't just let San Luis go back to "Arg" 458 # rules...San Luis is still using "Western ARgentina Time" and it got 459 # stuck on Summer daylight savings time even though the summer is over. 460 461 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 462 # 463 # Buenos Aires (BA), Capital Federal (CF), 464 Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 465 -4:16:48 - CMT 1920 May # Cordoba Mean Time 466 -4:00 - ART 1930 Dec 467 -4:00 Arg AR%sT 1969 Oct 5 468 -3:00 Arg AR%sT 1999 Oct 3 469 -4:00 Arg AR%sT 2000 Mar 3 470 -3:00 Arg AR%sT 471 # 472 # Cordoba (CB), Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), 473 # Chaco (CC), Formosa (FM), Santiago del Estero (SE) 474 # 475 # Shanks & Pottenger also make the following claims, which we haven't verified: 476 # - Formosa switched to -3:00 on 1991-01-07. 477 # - Misiones switched to -3:00 on 1990-12-29. 478 # - Chaco switched to -3:00 on 1991-01-04. 479 # - Santiago del Estero switched to -4:00 on 1991-04-01, 480 # then to -3:00 on 1991-04-26. 481 # 482 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 483 -4:16:48 - CMT 1920 May 484 -4:00 - ART 1930 Dec 485 -4:00 Arg AR%sT 1969 Oct 5 486 -3:00 Arg AR%sT 1991 Mar 3 487 -4:00 - WART 1991 Oct 20 488 -3:00 Arg AR%sT 1999 Oct 3 489 -4:00 Arg AR%sT 2000 Mar 3 490 -3:00 Arg AR%sT 491 # 492 # Salta (SA), La Pampa (LP), Neuquen (NQ), Rio Negro (RN) 493 Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 494 -4:16:48 - CMT 1920 May 495 -4:00 - ART 1930 Dec 496 -4:00 Arg AR%sT 1969 Oct 5 497 -3:00 Arg AR%sT 1991 Mar 3 498 -4:00 - WART 1991 Oct 20 499 -3:00 Arg AR%sT 1999 Oct 3 500 -4:00 Arg AR%sT 2000 Mar 3 501 -3:00 Arg AR%sT 2008 Oct 18 502 -3:00 - ART 503 # 504 # Tucuman (TM) 505 Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 506 -4:16:48 - CMT 1920 May 507 -4:00 - ART 1930 Dec 508 -4:00 Arg AR%sT 1969 Oct 5 509 -3:00 Arg AR%sT 1991 Mar 3 510 -4:00 - WART 1991 Oct 20 511 -3:00 Arg AR%sT 1999 Oct 3 512 -4:00 Arg AR%sT 2000 Mar 3 513 -3:00 - ART 2004 Jun 1 514 -4:00 - WART 2004 Jun 13 515 -3:00 Arg AR%sT 516 # 517 # La Rioja (LR) 518 Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 519 -4:16:48 - CMT 1920 May 520 -4:00 - ART 1930 Dec 521 -4:00 Arg AR%sT 1969 Oct 5 522 -3:00 Arg AR%sT 1991 Mar 1 523 -4:00 - WART 1991 May 7 524 -3:00 Arg AR%sT 1999 Oct 3 525 -4:00 Arg AR%sT 2000 Mar 3 526 -3:00 - ART 2004 Jun 1 527 -4:00 - WART 2004 Jun 20 528 -3:00 Arg AR%sT 2008 Oct 18 529 -3:00 - ART 530 # 531 # San Juan (SJ) 532 Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 533 -4:16:48 - CMT 1920 May 534 -4:00 - ART 1930 Dec 535 -4:00 Arg AR%sT 1969 Oct 5 536 -3:00 Arg AR%sT 1991 Mar 1 537 -4:00 - WART 1991 May 7 538 -3:00 Arg AR%sT 1999 Oct 3 539 -4:00 Arg AR%sT 2000 Mar 3 540 -3:00 - ART 2004 May 31 541 -4:00 - WART 2004 Jul 25 542 -3:00 Arg AR%sT 2008 Oct 18 543 -3:00 - ART 544 # 545 # Jujuy (JY) 546 Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 547 -4:16:48 - CMT 1920 May 548 -4:00 - ART 1930 Dec 549 -4:00 Arg AR%sT 1969 Oct 5 550 -3:00 Arg AR%sT 1990 Mar 4 551 -4:00 - WART 1990 Oct 28 552 -4:00 1:00 WARST 1991 Mar 17 553 -4:00 - WART 1991 Oct 6 554 -3:00 1:00 ARST 1992 555 -3:00 Arg AR%sT 1999 Oct 3 556 -4:00 Arg AR%sT 2000 Mar 3 557 -3:00 Arg AR%sT 2008 Oct 18 558 -3:00 - ART 559 # 560 # Catamarca (CT), Chubut (CH) 561 Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 562 -4:16:48 - CMT 1920 May 563 -4:00 - ART 1930 Dec 564 -4:00 Arg AR%sT 1969 Oct 5 565 -3:00 Arg AR%sT 1991 Mar 3 566 -4:00 - WART 1991 Oct 20 567 -3:00 Arg AR%sT 1999 Oct 3 568 -4:00 Arg AR%sT 2000 Mar 3 569 -3:00 - ART 2004 Jun 1 570 -4:00 - WART 2004 Jun 20 571 -3:00 Arg AR%sT 2008 Oct 18 572 -3:00 - ART 573 # 574 # Mendoza (MZ) 575 Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 576 -4:16:48 - CMT 1920 May 577 -4:00 - ART 1930 Dec 578 -4:00 Arg AR%sT 1969 Oct 5 579 -3:00 Arg AR%sT 1990 Mar 4 580 -4:00 - WART 1990 Oct 15 581 -4:00 1:00 WARST 1991 Mar 1 582 -4:00 - WART 1991 Oct 15 583 -4:00 1:00 WARST 1992 Mar 1 584 -4:00 - WART 1992 Oct 18 585 -3:00 Arg AR%sT 1999 Oct 3 586 -4:00 Arg AR%sT 2000 Mar 3 587 -3:00 - ART 2004 May 23 588 -4:00 - WART 2004 Sep 26 589 -3:00 Arg AR%sT 2008 Oct 18 590 -3:00 - ART 591 # 592 # San Luis (SL) 593 594 Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 - 595 Rule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S 596 597 Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 598 -4:16:48 - CMT 1920 May 599 -4:00 - ART 1930 Dec 600 -4:00 Arg AR%sT 1969 Oct 5 601 -3:00 Arg AR%sT 1990 602 -3:00 1:00 ARST 1990 Mar 14 603 -4:00 - WART 1990 Oct 15 604 -4:00 1:00 WARST 1991 Mar 1 605 -4:00 - WART 1991 Jun 1 606 -3:00 - ART 1999 Oct 3 607 -4:00 1:00 WARST 2000 Mar 3 608 -3:00 - ART 2004 May 31 609 -4:00 - WART 2004 Jul 25 610 -3:00 Arg AR%sT 2008 Jan 21 611 -4:00 SanLuis WAR%sT 612 # 613 # Santa Cruz (SC) 614 Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 615 -4:16:48 - CMT 1920 May # Cordoba Mean Time 616 -4:00 - ART 1930 Dec 617 -4:00 Arg AR%sT 1969 Oct 5 618 -3:00 Arg AR%sT 1999 Oct 3 619 -4:00 Arg AR%sT 2000 Mar 3 620 -3:00 - ART 2004 Jun 1 621 -4:00 - WART 2004 Jun 20 622 -3:00 Arg AR%sT 2008 Oct 18 623 -3:00 - ART 624 # 625 # Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 626 Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 627 -4:16:48 - CMT 1920 May # Cordoba Mean Time 628 -4:00 - ART 1930 Dec 629 -4:00 Arg AR%sT 1969 Oct 5 630 -3:00 Arg AR%sT 1999 Oct 3 631 -4:00 Arg AR%sT 2000 Mar 3 632 -3:00 - ART 2004 May 30 633 -4:00 - WART 2004 Jun 20 634 -3:00 Arg AR%sT 2008 Oct 18 635 -3:00 - ART 636 637 # Aruba 638 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 639 Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 640 -4:30 - ANT 1965 # Netherlands Antilles Time 641 -4:00 - AST 642 643 # Bolivia 644 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 645 Zone America/La_Paz -4:32:36 - LMT 1890 646 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT 647 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 648 -4:00 - BOT # Bolivia Time 649 650 # Brazil 651 652 # From Paul Eggert (1993-11-18): 653 # The mayor of Rio recently attempted to change the time zone rules 654 # just in his city, in order to leave more summer time for the tourist trade. 655 # The rule change lasted only part of the day; 656 # the federal government refused to follow the city's rules, and business 657 # was in a chaos, so the mayor backed down that afternoon. 658 659 # From IATA SSIM (1996-02): 660 # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 661 # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 662 # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 663 # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 664 # [The last three states are new to this issue of the IATA SSIM.] 665 666 # From Gwillim Law (1996-10-07): 667 # Geography, history (Tocantins was part of Goias until 1989), and other 668 # sources of time zone information lead me to believe that AL, SE, and TO were 669 # always in BR1, and so the only change was whether or not they observed DST.... 670 # The earliest issue of the SSIM I have is 2/91. Each issue from then until 671 # 9/95 says that DST is observed only in the ten states I quoted from 9/95, 672 # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 673 # (UTC-4).... The other two time zones given for Brazil are BR3, which is 674 # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 675 # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 676 # become part of the state of Pernambuco). The boundary between BR1 and BR2 677 # has never been clearly stated. They've simply been called East and West. 678 # However, some conclusions can be drawn from another IATA manual: the Airline 679 # Coding Directory, which lists close to 400 airports in Brazil. For each 680 # airport it gives a time zone which is coded to the SSIM. From that 681 # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 682 # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 683 # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 684 685 # From Marcos Tadeu (1998-09-27): 686 # <a href="http://pcdsh01.on.br/verao1.html"> 687 # Brazilian official page 688 # </a> 689 690 # From Jesper Norgaard (2000-11-03): 691 # [For an official list of which regions in Brazil use which time zones, see:] 692 # http://pcdsh01.on.br/Fusbr.htm 693 # http://pcdsh01.on.br/Fusbrhv.htm 694 695 # From Celso Doria via David Madeo (2002-10-09): 696 # The reason for the delay this year has to do with elections in Brazil. 697 # 698 # Unlike in the United States, elections in Brazil are 100% computerized and 699 # the results are known almost immediately. Yesterday, it was the first 700 # round of the elections when 115 million Brazilians voted for President, 701 # Governor, Senators, Federal Deputies, and State Deputies. Nobody is 702 # counting (or re-counting) votes anymore and we know there will be a second 703 # round for the Presidency and also for some Governors. The 2nd round will 704 # take place on October 27th. 705 # 706 # The reason why the DST will only begin November 3rd is that the thousands 707 # of electoral machines used cannot have their time changed, and since the 708 # Constitution says the elections must begin at 8:00 AM and end at 5:00 PM, 709 # the Government decided to postpone DST, instead of changing the Constitution 710 # (maybe, for the next elections, it will be possible to change the clock)... 711 712 # From Rodrigo Severo (2004-10-04): 713 # It's just the biannual change made necessary by the much hyped, supposedly 714 # modern Brazilian eletronic voting machines which, apparently, can't deal 715 # with a time change between the first and the second rounds of the elections. 716 717 # From Steffen Thorsen (2007-09-20): 718 # Brazil will start DST on 2007-10-14 00:00 and end on 2008-02-17 00:00: 719 # http://www.mme.gov.br/site/news/detail.do;jsessionid=BBA06811AFCAAC28F0285210913513DA?newsId=13975 720 721 # From Paul Schulze (2008-06-24): 722 # ...by law number 11.662 of April 24, 2008 (published in the "Diario 723 # Oficial da Uniao"...) in Brazil there are changes in the timezones, 724 # effective today (00:00am at June 24, 2008) as follows: 725 # 726 # a) The timezone UTC+5 is e[x]tinguished, with all the Acre state and the 727 # part of the Amazonas state that had this timezone now being put to the 728 # timezone UTC+4 729 # b) The whole Para state now is put at timezone UTC+3, instead of just 730 # part of it, as was before. 731 # 732 # This change follows a proposal of senator Tiao Viana of Acre state, that 733 # proposed it due to concerns about open television channels displaying 734 # programs inappropriate to youths in the states that had the timezone 735 # UTC+5 too early in the night. In the occasion, some more corrections 736 # were proposed, trying to unify the timezones of any given state. This 737 # change modifies timezone rules defined in decree 2.784 of 18 June, 738 # 1913. 739 740 # From Rodrigo Severo (2008-06-24): 741 # Just correcting the URL: 742 # <a href="https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008"> 743 # https://www.in.gov.br/imprensa/visualiza/index.jsp?jornal=do&secao=1&pagina=1&data=25/04/2008 744 # </a> 745 # 746 # As a result of the above Decree I believe the America/Rio_Branco 747 # timezone shall be modified from UTC-5 to UTC-4 and a new timezone shall 748 # be created to represent the the west side of the Para State. I 749 # suggest this new timezone be called Santarem as the most 750 # important/populated city in the affected area. 751 # 752 # This new timezone would be the same as the Rio_Branco timezone up to 753 # the 2008/06/24 change which would be to UTC-3 instead of UTC-4. 754 755 # From Alex Krivenyshev (2008-06-24): 756 # This is a quick reference page for New and Old Brazil Time Zones map. 757 # <a href="http://www.worldtimezone.com/brazil-time-new-old.php"> 758 # http://www.worldtimezone.com/brazil-time-new-old.php 759 # </a> 760 # 761 # - 4 time zones replaced by 3 time zones-eliminating time zone UTC- 05 762 # (state Acre and the part of the Amazonas will be UTC/GMT- 04) - western 763 # part of Par state is moving to one timezone UTC- 03 (from UTC -04). 764 765 # From Paul Eggert (2002-10-10): 766 # The official decrees referenced below are mostly taken from 767 # <a href="http://pcdsh01.on.br/DecHV.html"> 768 # Decretos sobre o Horario de Verao no Brasil 769 # </a>. 770 771 # From Steffen Thorsen (2008-08-29): 772 # As announced by the government and many newspapers in Brazil late 773 # yesterday, Brazil will start DST on 2008-10-19 (need to change rule) and 774 # it will end on 2009-02-15 (current rule for Brazil is fine). Based on 775 # past years experience with the elections, there was a good chance that 776 # the start was postponed to November, but it did not happen this year. 777 # 778 # It has not yet been posted to http://pcdsh01.on.br/DecHV.html 779 # 780 # An official page about it: 781 # <a href="http://www.mme.gov.br/site/news/detail.do?newsId=16722"> 782 # http://www.mme.gov.br/site/news/detail.do?newsId=16722 783 # </a> 784 # Note that this link does not always work directly, but must be accessed 785 # by going to 786 # <a href="http://www.mme.gov.br/first"> 787 # http://www.mme.gov.br/first 788 # </a> 789 # 790 # One example link that works directly: 791 # <a href="http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54"> 792 # http://jornale.com.br/index.php?option=com_content&task=view&id=13530&Itemid=54 793 # (Portuguese) 794 # </a> 795 # 796 # We have a written a short article about it as well: 797 # <a href="http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html"> 798 # http://www.timeanddate.com/news/time/brazil-dst-2008-2009.html 799 # </a> 800 801 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 802 # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 803 # Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 804 Rule Brazil 1931 only - Oct 3 11:00 1:00 S 805 Rule Brazil 1932 1933 - Apr 1 0:00 0 - 806 Rule Brazil 1932 only - Oct 3 0:00 1:00 S 807 # Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 808 # revoked DST. 809 # Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 810 # Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 811 Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S 812 Rule Brazil 1950 only - Apr 16 1:00 0 - 813 Rule Brazil 1951 1952 - Apr 1 0:00 0 - 814 # Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 815 Rule Brazil 1953 only - Mar 1 0:00 0 - 816 # Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 817 # revoked DST. 818 # Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 819 # established DST from 1963-10-23 00:00 to 1964-02-29 00:00 820 # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 821 # Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 822 # extended the above decree to all of the national territory on 12-09. 823 Rule Brazil 1963 only - Dec 9 0:00 1:00 S 824 # Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 825 # extended summer time by one day to 1964-03-01 00:00 (start of school). 826 Rule Brazil 1964 only - Mar 1 0:00 0 - 827 # Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 828 Rule Brazil 1965 only - Jan 31 0:00 1:00 S 829 Rule Brazil 1965 only - Mar 31 0:00 0 - 830 # Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 831 Rule Brazil 1965 only - Dec 1 0:00 1:00 S 832 # Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 833 Rule Brazil 1966 1968 - Mar 1 0:00 0 - 834 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S 835 # Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 836 # revoked DST. 837 # Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 838 Rule Brazil 1985 only - Nov 2 0:00 1:00 S 839 # Decree 92,310 (1986-01-21) 840 # Decree 92,463 (1986-03-13) 841 Rule Brazil 1986 only - Mar 15 0:00 0 - 842 # Decree 93,316 (1986-10-01) 843 Rule Brazil 1986 only - Oct 25 0:00 1:00 S 844 Rule Brazil 1987 only - Feb 14 0:00 0 - 845 # Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 846 Rule Brazil 1987 only - Oct 25 0:00 1:00 S 847 Rule Brazil 1988 only - Feb 7 0:00 0 - 848 # Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 849 # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 850 Rule Brazil 1988 only - Oct 16 0:00 1:00 S 851 Rule Brazil 1989 only - Jan 29 0:00 0 - 852 # Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 853 # with the same exceptions 854 Rule Brazil 1989 only - Oct 15 0:00 1:00 S 855 Rule Brazil 1990 only - Feb 11 0:00 0 - 856 # Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 857 # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 858 # Decree 99,629 (1990-10-19) adds BA, MT. 859 Rule Brazil 1990 only - Oct 21 0:00 1:00 S 860 Rule Brazil 1991 only - Feb 17 0:00 0 - 861 # <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 862 # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 863 Rule Brazil 1991 only - Oct 20 0:00 1:00 S 864 Rule Brazil 1992 only - Feb 9 0:00 0 - 865 # <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 866 # adopted by same states. 867 Rule Brazil 1992 only - Oct 25 0:00 1:00 S 868 Rule Brazil 1993 only - Jan 31 0:00 0 - 869 # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 870 # adopted by same states, plus AM. 871 # Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22; 872 # web page corrected 2004-01-07) adopted by same states, minus AM. 873 # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 874 # adopted by same states, plus MT and TO. 875 # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 876 # adds AL, SE. 877 Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 878 Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 879 Rule Brazil 1996 only - Feb 11 0:00 0 - 880 # Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 881 # adopted by same states, minus AL, SE. 882 Rule Brazil 1996 only - Oct 6 0:00 1:00 S 883 Rule Brazil 1997 only - Feb 16 0:00 0 - 884 # From Daniel C. Sobral (1998-02-12): 885 # In 1997, the DS began on October 6. The stated reason was that 886 # because international television networks ignored Brazil's policy on DS, 887 # they bought the wrong times on satellite for coverage of Pope's visit. 888 # This year, the ending date of DS was postponed to March 1 889 # to help dealing with the shortages of electric power. 890 # 891 # Decree 2,317 (1997-09-04), adopted by same states. 892 Rule Brazil 1997 only - Oct 6 0:00 1:00 S 893 # Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 894 # (1998-02-10) 895 Rule Brazil 1998 only - Mar 1 0:00 0 - 896 # Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 897 # adopted by the same states as before. 898 Rule Brazil 1998 only - Oct 11 0:00 1:00 S 899 Rule Brazil 1999 only - Feb 21 0:00 0 - 900 # Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 901 # (1999-08-23) adopted by same states. 902 # Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 903 # adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 904 Rule Brazil 1999 only - Oct 3 0:00 1:00 S 905 Rule Brazil 2000 only - Feb 27 0:00 0 - 906 # Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 907 # adopted by the same states as before. 908 # Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 909 # repeals DST in PE and RR, effective 2000-10-15 00:00. 910 # Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 911 # repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 912 # Decree <a href="http://pcdsh01.on.br/figuras/HV3916.gif">3,916</a> 913 # (2001-09-13) reestablishes DST in AL, CE, MA, PB, PE, PI, RN, SE. 914 Rule Brazil 2000 2001 - Oct Sun>=8 0:00 1:00 S 915 Rule Brazil 2001 2006 - Feb Sun>=15 0:00 0 - 916 # Decree 4,399 (2002-10-01) repeals DST in AL, CE, MA, PB, PE, PI, RN, SE. 917 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2002/D4399.htm">4,399</a> 918 Rule Brazil 2002 only - Nov 3 0:00 1:00 S 919 # Decree 4,844 (2003-09-24; corrected 2003-09-26) repeals DST in BA, MT, TO. 920 # <a href="http://www.presidencia.gov.br/CCIVIL/decreto/2003/D4844.htm">4,844</a> 921 Rule Brazil 2003 only - Oct 19 0:00 1:00 S 922 # Decree 5,223 (2004-10-01) reestablishes DST in MT. 923 # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2004-2006/2004/Decreto/D5223.htm">5,223</a> 924 Rule Brazil 2004 only - Nov 2 0:00 1:00 S 925 # Decree <a href="http://pcdsh01.on.br/DecHV5539.gif">5,539</a> (2005-09-19), 926 # adopted by the same states as before. 927 Rule Brazil 2005 only - Oct 16 0:00 1:00 S 928 # Decree <a href="http://pcdsh01.on.br/DecHV5920.gif">5,920</a> (2006-10-03), 929 # adopted by the same states as before. 930 Rule Brazil 2006 only - Nov 5 0:00 1:00 S 931 Rule Brazil 2007 only - Feb 25 0:00 0 - 932 # Decree <a href="http://pcdsh01.on.br/DecHV6212.gif">6,212</a> (2007-09-26), 933 # adopted by the same states as before. 934 Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S 935 # From Frederico A. C. Neves (2008-09-10): 936 # Acording to this decree 937 # <a href="http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm"> 938 # http://www.planalto.gov.br/ccivil_03/_Ato2007-2010/2008/Decreto/D6558.htm 939 # </a> 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 Martin Vaz (administratively part of ES), 975 # Atol das Rocas (RN), and Penedos de Sao Pedro e Sao Paulo (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 # Amapa (AP), east Para (PA) 980 # East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 981 # The division between east and west Para is the river Xingu. 982 # In the north a very small part from the river Javary (now Jari I guess, 983 # the border with Amapa) 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 Para (PA) 989 # West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 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 00:00 993 -3:00 - BRT 994 # 995 # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 996 # Paraiba (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 1020 # 1021 # Alagoas (AL), Sergipe (SE) 1022 Zone America/Maceio -2:22:52 - LMT 1914 1023 -3:00 Brazil BR%sT 1990 Sep 17 1024 -3:00 - BRT 1995 Oct 13 1025 -3:00 Brazil BR%sT 1996 Sep 4 1026 -3:00 - BRT 1999 Sep 30 1027 -3:00 Brazil BR%sT 2000 Oct 22 1028 -3:00 - BRT 2001 Sep 13 1029 -3:00 Brazil BR%sT 2002 Oct 1 1030 -3:00 - BRT 1031 # 1032 # Bahia (BA) 1033 # There are too many Salvadors elsewhere, so use America/Bahia instead 1034 # of America/Salvador. 1035 Zone America/Bahia -2:34:04 - LMT 1914 1036 -3:00 Brazil BR%sT 2003 Sep 24 1037 -3:00 - BRT 1038 # 1039 # Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 1040 # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 1041 # Santa Catarina (SC), Rio Grande do Sul (RS) 1042 Zone America/Sao_Paulo -3:06:28 - LMT 1914 1043 -3:00 Brazil BR%sT 1963 Oct 23 00:00 1044 -3:00 1:00 BRST 1964 1045 -3:00 Brazil BR%sT 1046 # 1047 # Mato Grosso do Sul (MS) 1048 Zone America/Campo_Grande -3:38:28 - LMT 1914 1049 -4:00 Brazil AM%sT 1050 # 1051 # Mato Grosso (MT) 1052 Zone America/Cuiaba -3:44:20 - LMT 1914 1053 -4:00 Brazil AM%sT 2003 Sep 24 1054 -4:00 - AMT 2004 Oct 1 1055 -4:00 Brazil AM%sT 1056 # 1057 # Rondonia (RO) 1058 Zone America/Porto_Velho -4:15:36 - LMT 1914 1059 -4:00 Brazil AM%sT 1988 Sep 12 1060 -4:00 - AMT 1061 # 1062 # Roraima (RR) 1063 Zone America/Boa_Vista -4:02:40 - LMT 1914 1064 -4:00 Brazil AM%sT 1988 Sep 12 1065 -4:00 - AMT 1999 Sep 30 1066 -4:00 Brazil AM%sT 2000 Oct 15 1067 -4:00 - AMT 1068 # 1069 # east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 1070 # The great circle line from Tabatinga to Porto Acre divides 1071 # east from west Amazonas. 1072 Zone America/Manaus -4:00:04 - LMT 1914 1073 -4:00 Brazil AM%sT 1988 Sep 12 1074 -4:00 - AMT 1993 Sep 28 1075 -4:00 Brazil AM%sT 1994 Sep 22 1076 -4:00 - AMT 1077 # 1078 # west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 1079 # Eirunepe, Envira, Ipixuna 1080 Zone America/Eirunepe -4:39:28 - LMT 1914 1081 -5:00 Brazil AC%sT 1988 Sep 12 1082 -5:00 - ACT 1993 Sep 28 1083 -5:00 Brazil AC%sT 1994 Sep 22 1084 -5:00 - ACT 2008 Jun 24 00:00 1085 -4:00 - AMT 1086 # 1087 # Acre (AC) 1088 Zone America/Rio_Branco -4:31:12 - LMT 1914 1089 -5:00 Brazil AC%sT 1988 Sep 12 1090 -5:00 - ACT 2008 Jun 24 00:00 1091 -4:00 - AMT 1092 1093 # Chile 1094 1095 # From Eduardo Krell (1995-10-19): 1096 # The law says to switch to DST at midnight [24:00] on the second SATURDAY 1097 # of October.... The law is the same for March and October. 1098 # (1998-09-29): 1099 # Because of the drought this year, the government decided to go into 1100 # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 1101 # (unless there's another dry season next year, I guess). 1102 1103 # From Julio I. Pacheco Troncoso (1999-03-18): 1104 # Because of the same drought, the government decided to end DST later, 1105 # on April 3, (one-time change). 1106 1107 # From Oscar van Vlijmen (2006-10-08): 1108 # http://www.horaoficial.cl/cambio.htm 1109 1110 # From Jesper Norgaard Welen (2006-10-08): 1111 # I think that there are some obvious mistakes in the suggested link 1112 # from Oscar van Vlijmen,... for instance entry 66 says that GMT-4 1113 # ended 1990-09-12 while entry 67 only begins GMT-3 at 1990-09-15 1114 # (they should have been 1990-09-15 and 1990-09-16 respectively), but 1115 # anyhow it clears up some doubts too. 1116 1117 # From Paul Eggert (2006-12-27): 1118 # The following data for Chile and America/Santiago are from 1119 # <http://www.horaoficial.cl/horaof.htm> (2006-09-20), transcribed by 1120 # Jesper Norgaard Welen. The data for Pacific/Easter are from Shanks 1121 # & Pottenger, except with DST transitions after 1932 cloned from 1122 # America/Santiago. The pre-1980 Pacific/Easter data are dubious, 1123 # but we have no other source. 1124 1125 # From German Poo-Caaman~o (2008-03-03): 1126 # Due to drought, Chile extends Daylight Time in three weeks. This 1127 # is one-time change (Saturday 3/29 at 24:00 for America/Santiago 1128 # and Saturday 3/29 at 22:00 for Pacific/Easter) 1129 # The Supreme Decree is located at 1130 # <a href="http://www.shoa.cl/servicios/supremo316.pdf"> 1131 # http://www.shoa.cl/servicios/supremo316.pdf 1132 # </a> 1133 # and the instructions for 2008 are located in: 1134 # <a href="http://www.horaoficial.cl/cambio.htm"> 1135 # http://www.horaoficial.cl/cambio.htm 1136 # </a>. 1137 1138 # From Jose Miguel Garrido (2008-03-05): 1139 # ... 1140 # You could see the announces of the change on 1141 # <a href="http://www.shoa.cl/noticias/2008/04hora/hora.htm"> 1142 # http://www.shoa.cl/noticias/2008/04hora/hora.htm 1143 # </a>. 1144 1145 # From Angel Chiang (2010-03-04): 1146 # Subject: DST in Chile exceptionally extended to 3 April due to earthquake 1147 # <a href="http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098"> 1148 # http://www.gobiernodechile.cl/viewNoticia.aspx?idArticulo=30098 1149 # </a> 1150 # (in Spanish, last paragraph). 1151 # 1152 # This is breaking news. There should be more information available later. 1153 1154 # From Arthur Daivd Olson (2010-03-06): 1155 # Angel Chiang's message confirmed by Julio Pacheco; Julio provided a patch. 1156 1157 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1158 Rule Chile 1927 1932 - Sep 1 0:00 1:00 S 1159 Rule Chile 1928 1932 - Apr 1 0:00 0 - 1160 Rule Chile 1942 only - Jun 1 4:00u 0 - 1161 Rule Chile 1942 only - Aug 1 5:00u 1:00 S 1162 Rule Chile 1946 only - Jul 15 4:00u 1:00 S 1163 Rule Chile 1946 only - Sep 1 3:00u 0:00 - 1164 Rule Chile 1947 only - Apr 1 4:00u 0 - 1165 Rule Chile 1968 only - Nov 3 4:00u 1:00 S 1166 Rule Chile 1969 only - Mar 30 3:00u 0 - 1167 Rule Chile 1969 only - Nov 23 4:00u 1:00 S 1168 Rule Chile 1970 only - Mar 29 3:00u 0 - 1169 Rule Chile 1971 only - Mar 14 3:00u 0 - 1170 Rule Chile 1970 1972 - Oct Sun>=9 4:00u 1:00 S 1171 Rule Chile 1972 1986 - Mar Sun>=9 3:00u 0 - 1172 Rule Chile 1973 only - Sep 30 4:00u 1:00 S 1173 Rule Chile 1974 1987 - Oct Sun>=9 4:00u 1:00 S 1174 Rule Chile 1987 only - Apr 12 3:00u 0 - 1175 Rule Chile 1988 1989 - Mar Sun>=9 3:00u 0 - 1176 Rule Chile 1988 only - Oct Sun>=1 4:00u 1:00 S 1177 Rule Chile 1989 only - Oct Sun>=9 4:00u 1:00 S 1178 Rule Chile 1990 only - Mar 18 3:00u 0 - 1179 Rule Chile 1990 only - Sep 16 4:00u 1:00 S 1180 Rule Chile 1991 1996 - Mar Sun>=9 3:00u 0 - 1181 Rule Chile 1991 1997 - Oct Sun>=9 4:00u 1:00 S 1182 Rule Chile 1997 only - Mar 30 3:00u 0 - 1183 Rule Chile 1998 only - Mar Sun>=9 3:00u 0 - 1184 Rule Chile 1998 only - Sep 27 4:00u 1:00 S 1185 Rule Chile 1999 only - Apr 4 3:00u 0 - 1186 Rule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 1187 Rule Chile 2000 2007 - Mar Sun>=9 3:00u 0 - 1188 # N.B.: the end of March 29 in Chile is March 30 in Universal time, 1189 # which is used below in specifying the transition. 1190 Rule Chile 2008 only - Mar 30 3:00u 0 - 1191 Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - 1192 Rule Chile 2010 only - Apr 4 3:00u 0 - 1193 Rule Chile 2011 max - Mar Sun>=9 3:00u 0 - 1194 # IATA SSIM anomalies: (1992-02) says 1992-03-14; 1195 # (1996-09) says 1998-03-08. Ignore these. 1196 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1197 Zone America/Santiago -4:42:46 - LMT 1890 1198 -4:42:46 - SMT 1910 # Santiago Mean Time 1199 -5:00 - CLT 1916 Jul 1 # Chile Time 1200 -4:42:46 - SMT 1918 Sep 1 # Santiago Mean Time 1201 -4:00 - CLT 1919 Jul 1 # Chile Time 1202 -4:42:46 - SMT 1927 Sep 1 # Santiago Mean Time 1203 -5:00 Chile CL%sT 1947 May 22 # Chile Time 1204 -4:00 Chile CL%sT 1205 Zone Pacific/Easter -7:17:44 - LMT 1890 1206 -7:17:28 - EMT 1932 Sep # Easter Mean Time 1207 -7:00 Chile EAS%sT 1982 Mar 13 21:00 # Easter I Time 1208 -6:00 Chile EAS%sT 1209 # 1210 # Sala y Gomez Island is like Pacific/Easter. 1211 # Other Chilean locations, including Juan Fernandez Is, San Ambrosio, 1212 # San Felix, and Antarctic bases, are like America/Santiago. 1213 1214 # Colombia 1215 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1216 Rule CO 1992 only - May 3 0:00 1:00 S 1217 Rule CO 1993 only - Apr 4 0:00 0 - 1218 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1219 Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 1220 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 1221 -5:00 CO CO%sT # Colombia Time 1222 # Malpelo, Providencia, San Andres 1223 # no information; probably like America/Bogota 1224 1225 # Curacao 1226 # 1227 # From Paul Eggert (2006-03-22): 1228 # Shanks & Pottenger say that The Bottom and Philipsburg have been at 1229 # -4:00 since standard time was introduced on 1912-03-02; and that 1230 # Kralendijk and Rincon used Kralendijk Mean Time (-4:33:08) from 1231 # 1912-02-02 to 1965-01-01. The former is dubious, since S&P also say 1232 # Saba Island has been like Curacao. 1233 # This all predates our 1970 cutoff, though. 1234 # 1235 # By July 2007 Curacao and St Maarten are planned to become 1236 # associated states within the Netherlands, much like Aruba; 1237 # Bonaire, Saba and St Eustatius would become directly part of the 1238 # Netherlands as Kingdom Islands. This won't affect their time zones 1239 # though, as far as we know. 1240 # 1241 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1242 Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 1243 -4:30 - ANT 1965 # Netherlands Antilles Time 1244 -4:00 - AST 1245 1246 # Ecuador 1247 # 1248 # From Paul Eggert (2007-03-04): 1249 # Apparently Ecuador had a failed experiment with DST in 1992. 1250 # <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and 1251 # <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both 1252 # talk about "hora Sixto". Leave this alone for now, as we have no data. 1253 # 1254 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1255 Zone America/Guayaquil -5:19:20 - LMT 1890 1256 -5:14:00 - QMT 1931 # Quito Mean Time 1257 -5:00 - ECT # Ecuador Time 1258 Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 1259 -5:00 - ECT 1986 1260 -6:00 - GALT # Galapagos Time 1261 1262 # Falklands 1263 1264 # From Paul Eggert (2006-03-22): 1265 # Between 1990 and 2000 inclusive, Shanks & Pottenger and the IATA agree except 1266 # the IATA gives 1996-09-08. Go with Shanks & Pottenger. 1267 1268 # From Falkland Islands Government Office, London (2001-01-22) 1269 # via Jesper Norgaard: 1270 # ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 1271 # April 2001 and advance one hour to summer time at 2 am on Sunday 2 1272 # September. It is anticipated that the clocks will revert back at 2 1273 # am on Sunday 21 April 2002 and advance to summer time at 2 am on 1274 # Sunday 1 September. 1275 1276 # From Rives McDow (2001-02-13): 1277 # 1278 # I have communicated several times with people there, and the last 1279 # time I had communications that was helpful was in 1998. Here is 1280 # what was said then: 1281 # 1282 # "The general rule was that Stanley used daylight saving and the Camp 1283 # did not. However for various reasons many people in the Camp have 1284 # started to use daylight saving (known locally as 'Stanley Time') 1285 # There is no rule as to who uses daylight saving - it is a matter of 1286 # personal choice and so it is impossible to draw a map showing who 1287 # uses it and who does not. Any list would be out of date as soon as 1288 # it was produced. This year daylight saving ended on April 18/19th 1289 # and started again on September 12/13th. I do not know what the rule 1290 # is, but can find out if you like. We do not change at the same time 1291 # as UK or Chile." 1292 # 1293 # I did have in my notes that the rule was "Second Saturday in Sep at 1294 # 0:00 until third Saturday in Apr at 0:00". I think that this does 1295 # not agree in some cases with Shanks; is this true? 1296 # 1297 # Also, there is no mention in the list that some areas in the 1298 # Falklands do not use DST. I have found in my communications there 1299 # that these areas are on the western half of East Falkland and all of 1300 # West Falkland. Stanley is the only place that consistently observes 1301 # DST. Again, as in other places in the world, the farmers don't like 1302 # it. West Falkland is almost entirely sheep farmers. 1303 # 1304 # I know one lady there that keeps a list of which farm keeps DST and 1305 # which doesn't each year. She runs a shop in Stanley, and says that 1306 # the list changes each year. She uses it to communicate to her 1307 # customers, catching them when they are home for lunch or dinner. 1308 1309 # From Paul Eggert (2001-03-05): 1310 # For now, we'll just record the time in Stanley, since we have no 1311 # better info. 1312 1313 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1314 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 1315 Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 1316 Rule Falk 1939 only - Oct 1 0:00 1:00 S 1317 Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 1318 Rule Falk 1943 only - Jan 1 0:00 0 - 1319 Rule Falk 1983 only - Sep lastSun 0:00 1:00 S 1320 Rule Falk 1984 1985 - Apr lastSun 0:00 0 - 1321 Rule Falk 1984 only - Sep 16 0:00 1:00 S 1322 Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 1323 Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 1324 Rule Falk 2001 max - Apr Sun>=15 2:00 0 - 1325 Rule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 1326 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1327 Zone Atlantic/Stanley -3:51:24 - LMT 1890 1328 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 1329 -4:00 Falk FK%sT 1983 May # Falkland Is Time 1330 -3:00 Falk FK%sT 1985 Sep 15 1331 -4:00 Falk FK%sT 1332 1333 # French Guiana 1334 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1335 Zone America/Cayenne -3:29:20 - LMT 1911 Jul 1336 -4:00 - GFT 1967 Oct # French Guiana Time 1337 -3:00 - GFT 1338 1339 # Guyana 1340 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1341 Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 1342 -3:45 - GBGT 1966 May 26 # Br Guiana Time 1343 -3:45 - GYT 1975 Jul 31 # Guyana Time 1344 -3:00 - GYT 1991 1345 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 1346 -4:00 - GYT 1347 1348 # Paraguay 1349 # From Paul Eggert (2006-03-22): 1350 # Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00, 1351 # and autumn transitions are from 00:00 -> 23:00. Go with pre-1999 1352 # editions of Shanks, and with the IATA, who say transitions occur at 00:00. 1353 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1354 Rule Para 1975 1988 - Oct 1 0:00 1:00 S 1355 Rule Para 1975 1978 - Mar 1 0:00 0 - 1356 Rule Para 1979 1991 - Apr 1 0:00 0 - 1357 Rule Para 1989 only - Oct 22 0:00 1:00 S 1358 Rule Para 1990 only - Oct 1 0:00 1:00 S 1359 Rule Para 1991 only - Oct 6 0:00 1:00 S 1360 Rule Para 1992 only - Mar 1 0:00 0 - 1361 Rule Para 1992 only - Oct 5 0:00 1:00 S 1362 Rule Para 1993 only - Mar 31 0:00 0 - 1363 Rule Para 1993 1995 - Oct 1 0:00 1:00 S 1364 Rule Para 1994 1995 - Feb lastSun 0:00 0 - 1365 Rule Para 1996 only - Mar 1 0:00 0 - 1366 # IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 1367 # From Steffen Thorsen (2000-10-02): 1368 # I have three independent reports that Paraguay changed to DST this Sunday 1369 # (10-01). 1370 # 1371 # Translated by Gwillim Law (2001-02-27) from 1372 # <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 1373 # Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 1374 # </a>: 1375 # Starting at 0:00 today, the clock will be set forward 60 minutes, in 1376 # fulfillment of Decree No. 7,273 of the Executive Power.... The time change 1377 # system has been operating for several years. Formerly there was a separate 1378 # decree each year; the new law has the same effect, but permanently. Every 1379 # year, the time will change on the first Sunday of October; likewise, the 1380 # clock will be set back on the first Sunday of March. 1381 # 1382 Rule Para 1996 2001 - Oct Sun>=1 0:00 1:00 S 1383 # IATA SSIM (1997-09) says Mar 1; go with Shanks & Pottenger. 1384 Rule Para 1997 only - Feb lastSun 0:00 0 - 1385 # Shanks & Pottenger say 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 1386 # (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 1387 Rule Para 1998 2001 - Mar Sun>=1 0:00 0 - 1388 # From Rives McDow (2002-02-28): 1389 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the 1390 # dst method to be from the first Sunday in September to the first Sunday in 1391 # April. 1392 Rule Para 2002 2004 - Apr Sun>=1 0:00 0 - 1393 Rule Para 2002 2003 - Sep Sun>=1 0:00 1:00 S 1394 # 1395 # From Jesper Norgaard Welen (2005-01-02): 1396 # There are several sources that claim that Paraguay made 1397 # a timezone rule change in autumn 2004. 1398 # From Steffen Thorsen (2005-01-05): 1399 # Decree 1,867 (2004-03-05) 1400 # From Carlos Raul Perasso via Jesper Norgaard Welen (2006-10-13) 1401 # <http://www.presidencia.gov.py/decretos/D1867.pdf> 1402 Rule Para 2004 2009 - Oct Sun>=15 0:00 1:00 S 1403 Rule Para 2005 2009 - Mar Sun>=8 0:00 0 - 1404 # From Carlos Raul Perasso (2010-02-18): 1405 # By decree number 3958 issued yesterday ( 1406 # <a href="http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf"> 1407 # http://www.presidencia.gov.py/v1/wp-content/uploads/2010/02/decreto3958.pdf 1408 # </a> 1409 # ) 1410 # Paraguay changes its DST schedule, postponing the March rule to April and 1411 # modifying the October date. The decree reads: 1412 # ... 1413 # Art. 1. It is hereby established that from the second Sunday of the month of 1414 # April of this year (2010), the official time is to be set back 60 minutes, 1415 # and that on the first Sunday of the month of October, it is to be set 1416 # forward 60 minutes, in all the territory of the Paraguayan Republic. 1417 # ... 1418 Rule Para 2010 max - Oct Sun>=1 0:00 1:00 S 1419 Rule Para 2010 max - Apr Sun>=8 0:00 0 - 1420 1421 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1422 Zone America/Asuncion -3:50:40 - LMT 1890 1423 -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 1424 -4:00 - PYT 1972 Oct # Paraguay Time 1425 -3:00 - PYT 1974 Apr 1426 -4:00 Para PY%sT 1427 1428 # Peru 1429 # 1430 # <a href="news:xrGmb.39935$gA1.13896113 (a] news4.srv.hcvlny.cv.net"> 1431 # From Evelyn C. Leeper via Mark Brader (2003-10-26):</a> 1432 # When we were in Peru in 1985-1986, they apparently switched over 1433 # sometime between December 29 and January 3 while we were on the Amazon. 1434 # 1435 # From Paul Eggert (2006-03-22): 1436 # Shanks & Pottenger don't have this transition. Assume 1986 was like 1987. 1437 1438 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1439 Rule Peru 1938 only - Jan 1 0:00 1:00 S 1440 Rule Peru 1938 only - Apr 1 0:00 0 - 1441 Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 1442 Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 1443 Rule Peru 1986 1987 - Jan 1 0:00 1:00 S 1444 Rule Peru 1986 1987 - Apr 1 0:00 0 - 1445 Rule Peru 1990 only - Jan 1 0:00 1:00 S 1446 Rule Peru 1990 only - Apr 1 0:00 0 - 1447 # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. 1448 Rule Peru 1994 only - Jan 1 0:00 1:00 S 1449 Rule Peru 1994 only - Apr 1 0:00 0 - 1450 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1451 Zone America/Lima -5:08:12 - LMT 1890 1452 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? 1453 -5:00 Peru PE%sT # Peru Time 1454 1455 # South Georgia 1456 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1457 Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 1458 -2:00 - GST # South Georgia Time 1459 1460 # South Sandwich Is 1461 # uninhabited; scientific personnel have wintered 1462 1463 # Suriname 1464 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1465 Zone America/Paramaribo -3:40:40 - LMT 1911 1466 -3:40:52 - PMT 1935 # Paramaribo Mean Time 1467 -3:40:36 - PMT 1945 Oct # The capital moved? 1468 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 1469 -3:30 - SRT 1984 Oct # Suriname Time 1470 -3:00 - SRT 1471 1472 # Trinidad and Tobago 1473 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1474 Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 1475 -4:00 - AST 1476 1477 # Uruguay 1478 # From Paul Eggert (1993-11-18): 1479 # Uruguay wins the prize for the strangest peacetime manipulation of the rules. 1480 # From Shanks & Pottenger: 1481 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1482 # Whitman gives 1923 Oct 1; go with Shanks & Pottenger. 1483 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS 1484 Rule Uruguay 1924 1926 - Apr 1 0:00 0 - 1485 Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 1486 Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 1487 # Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman. 1488 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 1489 Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS 1490 Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 1491 # Whitman gives 1937 Oct 3; go with Shanks & Pottenger. 1492 Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 1493 # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 1494 # and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger. 1495 Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS 1496 Rule Uruguay 1942 only - Jan 1 0:00 0 - 1497 Rule Uruguay 1942 only - Dec 14 0:00 1:00 S 1498 Rule Uruguay 1943 only - Mar 14 0:00 0 - 1499 Rule Uruguay 1959 only - May 24 0:00 1:00 S 1500 Rule Uruguay 1959 only - Nov 15 0:00 0 - 1501 Rule Uruguay 1960 only - Jan 17 0:00 1:00 S 1502 Rule Uruguay 1960 only - Mar 6 0:00 0 - 1503 Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 1504 Rule Uruguay 1965 only - Sep 26 0:00 0 - 1505 Rule Uruguay 1966 1967 - Oct 31 0:00 0 - 1506 Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS 1507 Rule Uruguay 1968 1970 - Dec 2 0:00 0 - 1508 Rule Uruguay 1972 only - Apr 24 0:00 1:00 S 1509 Rule Uruguay 1972 only - Aug 15 0:00 0 - 1510 Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS 1511 Rule Uruguay 1974 only - Dec 22 0:00 1:00 S 1512 Rule Uruguay 1976 only - Oct 1 0:00 0 - 1513 Rule Uruguay 1977 only - Dec 4 0:00 1:00 S 1514 Rule Uruguay 1978 only - Apr 1 0:00 0 - 1515 Rule Uruguay 1979 only - Oct 1 0:00 1:00 S 1516 Rule Uruguay 1980 only - May 1 0:00 0 - 1517 Rule Uruguay 1987 only - Dec 14 0:00 1:00 S 1518 Rule Uruguay 1988 only - Mar 14 0:00 0 - 1519 Rule Uruguay 1988 only - Dec 11 0:00 1:00 S 1520 Rule Uruguay 1989 only - Mar 12 0:00 0 - 1521 Rule Uruguay 1989 only - Oct 29 0:00 1:00 S 1522 # Shanks & Pottenger say no DST was observed in 1990/1 and 1991/2, 1523 # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 1524 Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 1525 Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 1526 Rule Uruguay 1992 only - Oct 18 0:00 1:00 S 1527 Rule Uruguay 1993 only - Feb 28 0:00 0 - 1528 # From Eduardo Cota (2004-09-20): 1529 # The uruguayan government has decreed a change in the local time.... 1530 # http://www.presidencia.gub.uy/decretos/2004091502.htm 1531 Rule Uruguay 2004 only - Sep 19 0:00 1:00 S 1532 # From Steffen Thorsen (2005-03-11): 1533 # Uruguay's DST was scheduled to end on Sunday, 2005-03-13, but in order to 1534 # save energy ... it was postponed two weeks.... 1535 # http://www.presidencia.gub.uy/_Web/noticias/2005/03/2005031005.htm 1536 Rule Uruguay 2005 only - Mar 27 2:00 0 - 1537 # From Eduardo Cota (2005-09-27): 1538 # http://www.presidencia.gub.uy/_Web/decretos/2005/09/CM%20119_09%2009%202005_00001.PDF 1539 # This means that from 2005-10-09 at 02:00 local time, until 2006-03-12 at 1540 # 02:00 local time, official time in Uruguay will be at GMT -2. 1541 Rule Uruguay 2005 only - Oct 9 2:00 1:00 S 1542 Rule Uruguay 2006 only - Mar 12 2:00 0 - 1543 # From Jesper Norgaard Welen (2006-09-06): 1544 # http://www.presidencia.gub.uy/_web/decretos/2006/09/CM%20210_08%2006%202006_00001.PDF 1545 Rule Uruguay 2006 max - Oct Sun>=1 2:00 1:00 S 1546 Rule Uruguay 2007 max - Mar Sun>=8 2:00 0 - 1547 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1548 Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 1549 -3:44:44 - MMT 1920 May 1 # Montevideo MT 1550 -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 1551 -3:00 Uruguay UY%sT 1552 1553 # Venezuela 1554 # 1555 # From John Stainforth (2007-11-28): 1556 # ... the change for Venezuela originally expected for 2007-12-31 has 1557 # been brought forward to 2007-12-09. The official announcement was 1558 # published today in the "Gaceta Oficial de la Republica Bolivariana 1559 # de Venezuela, numero 38.819" (official document for all laws or 1560 # resolution publication) 1561 # http://www.globovision.com/news.php?nid=72208 1562 1563 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1564 Zone America/Caracas -4:27:44 - LMT 1890 1565 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? 1566 -4:30 - VET 1965 # Venezuela Time 1567 -4:00 - VET 2007 Dec 9 03:00 1568 -4:30 - VET 1569
