>From bf6d6caa5ee14be09072cb9d11498e75857e7ffd Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Mon, 20 Apr 2015 23:36:37 -0700 Subject: [PROPOSED PATCH] Egypt dropped DST in 2015 * NEWS: Document this. * africa (Egypt): No DST in 2015, and assume no DST thereafter. --- NEWS | 6 ++++++ africa | 60 +++++++++++++++--------------------------------------------- 2 files changed, 21 insertions(+), 45 deletions(-) diff --git a/NEWS b/NEWS index 58ec0a6..801c212 100644 --- a/NEWS +++ b/NEWS @@ -2,6 +2,12 @@ News for the tz database Unreleased, experimental changes + Changes affecting future time stamps + + Egypt will not observe DST in 2015 and will consider canceling it + permanently. For now, assume it'll be canceled. + (Thanks to Ahmed Nazmy and Tim Parenti.) + Changes affecting past time stamps America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not diff --git a/africa b/africa index 8b9ee61..ea0171a 100644 --- a/africa +++ b/africa @@ -328,35 +328,20 @@ Rule Egypt 2007 only - Sep Thu>=1 24:00 0 - # http://almogaz.com/news/weird-news/2015/04/05/1947105 ... # http://www.timeanddate.com/news/time/egypt-starts-dst-2015.html -# From Paul Eggert (2015-04-08): -# For now, guess that later spring and fall transitions will use -# 2014's rules, and guess that Egypt will switch to standard time at -# 24:00 the last Thursday before Ramadan, and back to DST at 00:00 the -# first Friday after Ramadan. To implement this, -# transition dates for 2015 through 2037 were determined by running -# the following program under GNU Emacs 24.4, with the results integrated -# by hand into the table below. Ramadan again intrudes on the guessed -# DST starting in 2038, but that's beyond our somewhat-arbitrary cutoff. -# (let ((islamic-year 1436)) -# (while (< islamic-year 1460) -# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) -# (b (calendar-islamic-to-absolute (list 10 1 islamic-year))) -# (friday 5)) -# (while (/= friday (mod a 7)) -# (setq a (1- a))) -# (while (/= friday (mod b 7)) -# (setq b (1+ b))) -# (setq a (1- a)) -# (setq b (1- b)) -# (setq a (calendar-gregorian-from-absolute a)) -# (setq b (calendar-gregorian-from-absolute b)) -# (insert -# (format -# (concat "Rule\tEgypt\t%d\tonly\t-\t%s\t%2d\t24:00\t0\t-\n" -# "Rule\tEgypt\t%d\tonly\t-\t%s\t%2d\t24:00\t1:00\tS\n") -# (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) -# (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) -# (setq islamic-year (+ 1 islamic-year)))) +# From Ahmed Nazmy (2015-04-20): +# Egypt's ministers cabinet just announced ... that it will cancel DST at +# least for 2015. +# +# From Tim Parenti (2015-04-20): +# http://english.ahram.org.eg/WriterArticles/NewsContentP/1/128195/Egypt/No-daylight-saving-this-summer-Egypts-prime-minist.aspx +# "Egypt's cabinet agreed on Monday not to switch clocks for daylight saving +# time this summer, and carry out studies on the possibility of canceling the +# practice altogether in future years." +# +# From Paul Eggert (2015-04-20): +# For now, assume DST will be canceled. Any resumption would likely +# use different rules anyway. + Rule Egypt 2008 only - Aug lastThu 24:00 0 - Rule Egypt 2009 only - Aug 20 24:00 0 - Rule Egypt 2010 only - Aug 10 24:00 0 - @@ -365,22 +350,7 @@ Rule Egypt 2010 only - Sep lastThu 24:00 0 - Rule Egypt 2014 only - May 15 24:00 1:00 S Rule Egypt 2014 only - Jun 26 24:00 0 - Rule Egypt 2014 only - Jul 31 24:00 1:00 S -Rule Egypt 2014 max - Sep lastThu 24:00 0 - -Rule Egypt 2015 2019 - Apr lastThu 24:00 1:00 S -Rule Egypt 2015 only - Jun 11 24:00 0 - -Rule Egypt 2015 only - Jul 23 24:00 1:00 S -Rule Egypt 2016 only - Jun 2 24:00 0 - -Rule Egypt 2016 only - Jul 7 24:00 1:00 S -Rule Egypt 2017 only - May 25 24:00 0 - -Rule Egypt 2017 only - Jun 29 24:00 1:00 S -Rule Egypt 2018 only - May 10 24:00 0 - -Rule Egypt 2018 only - Jun 14 24:00 1:00 S -Rule Egypt 2019 only - May 2 24:00 0 - -Rule Egypt 2019 only - Jun 6 24:00 1:00 S -Rule Egypt 2020 only - May 28 24:00 1:00 S -Rule Egypt 2021 only - May 13 24:00 1:00 S -Rule Egypt 2022 only - May 5 24:00 1:00 S -Rule Egypt 2023 max - Apr lastThu 24:00 1:00 S +Rule Egypt 2014 only - Sep lastThu 24:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:09 - LMT 1900 Oct -- 2.1.0