Thanks for the heads-up. Here's a proposed patch to the tz database. Looks like we'll have to push out a new version ASAP.
From 0ff4ee1dd4b2b9042052df4a4acab3c72f3d2665 Mon Sep 17 00:00:00 2001 From: Paul Eggert <eggert@cs.ucla.edu> Date: Sat, 3 Nov 2012 01:45:16 -0700 Subject: [PATCH] Cuba switches to standard time on November 4 this year.
* northamerica: Alter Cuba rules accordingly. Thanks to Steffen Thorsen for the heads-up, in <http://mm.icann.org/pipermail/tz/2012-November/018427.html>. --- northamerica | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/northamerica b/northamerica index 1f784e0..18a4228 100644 --- a/northamerica +++ b/northamerica @@ -2797,6 +2797,13 @@ Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose # http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html # </a> +# From Steffen Thorsen (2012-11-03): +# Radio Reloj and many other sources report that Cuba is changing back +# to standard time on 2012-11-04: +# http://www.radioreloj.cu/index.php/noticias-radio-reloj/36-nacionales/9961-r... +# From Paul Eggert (2012-11-03): +# For now, assume the future rule is first Sunday in November. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Cuba 1928 only - Jun 10 0:00 1:00 D Rule Cuba 1928 only - Oct 10 0:00 0 S @@ -2834,7 +2841,7 @@ Rule Cuba 2009 2010 - Mar Sun>=8 0:00s 1:00 D Rule Cuba 2011 only - Mar Sun>=15 0:00s 1:00 D Rule Cuba 2011 only - Nov 13 0:00s 0 S Rule Cuba 2012 only - Apr 1 0:00s 1:00 D -Rule Cuba 2012 max - Oct lastSun 0:00s 0 S +Rule Cuba 2012 max - Nov Sun>=1 0:00s 0 S Rule Cuba 2013 max - Mar Sun>=8 0:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] -- 1.7.9.5