Sent mails with numeric timezone +0200 instead of +0100
I asked myself why my sent eMails have the numeric timezone “+0200″ even though I live in Switzerland where we are in the UTC+1 time zone.
After a short scan through my eMails I found out:
eMails sent in summer time do have the numeric timezone “+0200″ like
Mail-Header:
Date: Tue, 18 Sep 2007 17:47:12 +0200
All eMails I sent in winter time (eg. sometime in january) do have the numeric timezone “+0100″ like
Mail-Header:
Date: Wed, 03 Jan 2007 10:36:59 +0100
This is only the case if your country has the summer time (also called daylight saving time). If you don’t have it, all your eMails do have the same numeric timezone. If you don’t know that, check it out here.
Wikipedia wrote it that way:
Central European Summer Time (CEST) is one of the names of UTC+2 time zone, 2 hours ahead of Coordinated Universal Time. It is used as a summer daylight saving time in most European and some North African countries. During the winter, Central European Time (UTC+1) is used.
Only by the way I want to mention an alternative format used for absolut times (date and time including time zone). Search for “Internet Time” or go directly to the wikipedia-article:
http://en.wikipedia.org/wiki/Internet_Time
