Thanks, I pushed the following patch into the experimental github repository -- it is like your patch except that the commentary is a bit different. I'd like to generate the next tz release soon, given that the change takes effect in less than four days.
From 30344f7c14010c60cd9d8f9995ca8c7cbb4bb0e5 Mon Sep 17 00:00:00 2001 From: Paul Eggert <eggert@cs.ucla.edu> Date: Tue, 2 Jul 2013 23:49:41 -0700 Subject: [PATCH] Move Morocco's midsummer 2013 transitions.
* africa (Morocco): This year's midsummer transitions are July 7 and August 10, not July 9 and August 8. Thanks to Andrew Paprocki in <http://mm.icann.org/pipermail/tz/2013-July/019421.html>. --- africa | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/africa b/africa index 5f4f8eb..a92d7f5 100644 --- a/africa +++ b/africa @@ -852,12 +852,18 @@ Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou # announced that year's Ramadan daylight-saving transitions would be # 2012-07-20 and 2012-08-20; see # <http://www.mmsp.gov.ma/fr/actualites.aspx?id=288>. -# + +# From Andrew Paprocki (2013-07-02): +# Morocco announced that the year's Ramadan daylight-savings +# transitions would be 2013-07-07 and 2013-08-10; see: +# http://www.maroc.ma/en/news/morocco-suspends-daylight-saving-time-july-7-aug... + +# From Paul Eggert (2013-07-03): # To estimate what the Moroccan government will do in future years, -# transition dates for 2013 through 2021 were determined by running +# transition dates for 2014 through 2021 were determined by running # the following program under GNU Emacs 24.3: # -# (let ((islamic-year 1434)) +# (let ((islamic-year 1435)) # (while (< islamic-year 1444) # (let ((a # (calendar-gregorian-from-absolute @@ -910,8 +916,8 @@ Rule Morocco 2012 2019 - Apr lastSun 2:00 1:00 S Rule Morocco 2012 max - Sep lastSun 3:00 0 - Rule Morocco 2012 only - Jul 20 3:00 0 - Rule Morocco 2012 only - Aug 20 2:00 1:00 S -Rule Morocco 2013 only - Jul 9 3:00 0 - -Rule Morocco 2013 only - Aug 8 2:00 1:00 S +Rule Morocco 2013 only - Jul 7 3:00 0 - +Rule Morocco 2013 only - Aug 10 2:00 1:00 S Rule Morocco 2014 only - Jun 29 3:00 0 - Rule Morocco 2014 only - Jul 29 2:00 1:00 S Rule Morocco 2015 only - Jun 18 3:00 0 - -- 1.8.1.2