Comment 6 for bug 453165

Test case:

Current situation:

$ LANG= TZ=America/Argentina/Buenos_Aires date
Sat Oct 17 09:14:43 ART 2009
$ LANG= TZ=America/Argentina/Buenos_Aires date -d tomorrow
Sun Oct 18 10:14:46 ARST 2009

-> Argentina would switch to DST, which has just been changed. I'm using Magerita's patch which is straightforward:

+# Margarita Manterola:
+# Same as always, Argentina's government just decided to change its mind
+# regarding DST, 2 days in advance.
+# http://www.lanacion.com.ar/nota.asp?nota_id=1186963&pid=7542694&toi=6275
+
 Rule Arg 2007 only - Dec 30 0:00 1:00 S
-Rule Arg 2008 max - Mar Sun>=15 0:00 0 -
-Rule Arg 2008 max - Oct Sun>=15 0:00 1:00 S
+Rule Arg 2008 2009 - Mar Sun>=15 0:00 0 -
+Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S