Re: BUG #6638: Casablanca timezone is wrong

dchuet(at)odotech(dot)com writes:
> We get for Africa/Casablanca, timezone equal to WET with no DST.
> This is not true from 2010.
> See Wikipedia, for Morocco:

I wouldn't necessarily trust Wikipedia for that. We use the IANA
(nee Olson) timezone database. If you think the information in that
is wrong, you should take it up with the upstream maintainers:
http://www.iana.org/time-zones

As far as I can tell from a quick look in their mailing list archives,
the timezone data shipped with 9.0.7 is correct for Morocco through
2011. It does not know about the 2012 DST law that was just published
a few weeks ago, but unless you can provide use of a time machine,
there's not a lot we can do about that. We customarily update to the
latest timezone data files available from IANA whenever Postgres update
releases are made. If you are in a bigger hurry than that, you can get
the latest tzdata files from the above-mentioned page and drop them into
the timezone directory in your installation.

regards, tom lane