From 1b2c46e15cb694148b06d6f5f7fffec85f01e667 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Thu, 17 Mar 2016 14:14:35 -0700 Subject: [PROPOSED PATCH] Chile reverts from permanent to seasonal DST (Thanks to Juan Correa for the heads-up, and to Tim Parenti for corrections.) * NEWS: Documen this. * southamerica (Chile): Revert to seasonal DST as of 2016. (America/Santiago, Pacific/Easter, Antarctica/Palmer): Simplify by assuming DST since 2014. --- NEWS | 8 ++++++++ southamerica | 28 +++++++++++++++++++++------- 2 files changed, 29 insertions(+), 7 deletions(-) diff --git a/NEWS b/NEWS index f59f617..e60f0d3 100644 --- a/NEWS +++ b/NEWS @@ -6,6 +6,14 @@ Unreleased, experimental changes Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.) + Chile reverts from permanent to seasonal DST. (Thanks to Juan + Correa for the heads-up, and to Tim Parenti for corrections.) + Guess that future America/Santiago and Antarctica/Palmer + transitions are August's and May's second Saturdays at 24:00 local + time, and that Pacific/Easter stays two hours behind. Also, call + the period from 2014-09-07 through 2016-05-14 daylight saving time + instead of standard time, as that seems more appropriate now. + Release 2016b - 2016-03-12 17:30:14 -0800 diff --git a/southamerica b/southamerica index 50d118e..63e719c 100644 --- a/southamerica +++ b/southamerica @@ -1221,6 +1221,21 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # From Paul Eggert (2015-03-03): # For now, assume that the extension will persist indefinitely. +# From Juan Correa (2016-03-13): +# Today the Chilean Ministry of Energy announced that they will go back to a +# DST scheme this year. That means clocks will go back 1 hour at 00:00 May +# 15th (jumping back to May 14th); and will go forward by 1 hour on 00:00, +# August 14th. This was decided after a public outcry during winter, when the +# sunrise for Santiago went as late as 08:45.... +# http://www.soychile.cl/Santiago/Sociedad/2016/03/13/380779/Vuelve-el-horario-de-invierno-a-partir-de-la-segunda-semana-de-mayo.aspx +# http://www.biobiochile.cl/2016/03/13/gobierno-retrocede-y-decreta-el-regreso-del-horario-de-invierno.shtml +# http://www.t13.cl/noticia/nacional/chile-volvera-implementar-horario-invierno +# +# From Paul Eggert (2016-03-14): +# For now, guess that future transitions are May's and August's second +# Saturdays at 24:00 local time, and that Pacific/Easter always stays 2 +# hours behind. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1931 - Sep 1 0:00 1:00 S Rule Chile 1928 1932 - Apr 1 0:00 0 - @@ -1252,8 +1267,10 @@ Rule Chile 2009 only - Mar Sun>=9 3:00u 0 - Rule Chile 2010 only - Apr Sun>=1 3:00u 0 - Rule Chile 2011 only - May Sun>=2 3:00u 0 - Rule Chile 2011 only - Aug Sun>=16 4:00u 1:00 S -Rule Chile 2012 2015 - Apr Sun>=23 3:00u 0 - +Rule Chile 2012 2014 - Apr Sun>=23 3:00u 0 - Rule Chile 2012 2014 - Sep Sun>=2 4:00u 1:00 S +Rule Chile 2016 max - May Sun>=9 3:00u 0 - +Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -1270,13 +1287,11 @@ Zone America/Santiago -4:42:46 - LMT 1890 -4:00 1:00 CLST 1946 Sep 1 # central Chile -4:00 - CLT 1947 Apr 1 -5:00 - CLT 1947 May 21 23:00 - -4:00 Chile CL%sT 2015 Apr 26 3:00u - -3:00 - CLT + -4:00 Chile CL%sT Zone Pacific/Easter -7:17:28 - LMT 1890 -7:17:28 - EMT 1932 Sep # Easter Mean Time -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time - -6:00 Chile EAS%sT 2015 Apr 26 3:00u - -5:00 - EAST + -6:00 Chile EAS%sT # # Salas y Gómez Island is uninhabited. # Other Chilean locations, including Juan Fernández Is, Desventuradas Is, @@ -1298,8 +1313,7 @@ Zone Pacific/Easter -7:17:28 - LMT 1890 Zone Antarctica/Palmer 0 - zzz 1965 -4:00 Arg AR%sT 1969 Oct 5 -3:00 Arg AR%sT 1982 May - -4:00 Chile CL%sT 2015 Apr 26 3:00u - -3:00 - CLT + -4:00 Chile CL%sT # Colombia -- 2.5.0