rainlance/amiga-tz
1
0
Fork 0
mirror of https://frontier.innolan.net/rainlance/amiga-tz.git synced 2026-05-09 05:35:44 +00:00
Code Releases Activity

Egypt dropped DST in 2015

Browse Source 
* NEWS: Document this.
* africa (Egypt): No DST in 2015, and assume no DST thereafter.
This commit is contained in:
Paul Eggert
2015-04-20 23:36:37 -07:00
parent f4f78dc5fe
commit bf6d6caa5e
2 changed files with 21 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
NEWS
View File

@@ -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

60
africa
View File

@@ -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