Re: [PATCH] Fix: wrong offset for CET timezone
Robin Rosenberg robin.rosenb...@dewire.com writes: $ TZ=CET date Fre 27 Jun 2014 00:08:05 CEST That only works because CET is a special zone name (POSIX time zones require at least a number to denote the standard offset), similar to Europe/Berlin but without the history. Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 And now for something completely different. -- To unsubscribe from this list: send the line unsubscribe git in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH] Fix: wrong offset for CET timezone
- Ursprungligt meddelande - Från: Alan Franzoni mail...@franzoni.eu Till: Robin Rosenberg robin.rosenb...@dewire.com Kopia: git@vger.kernel.org, Alan Franzoni usern...@franzoni.eu, sch...@linux-m68k.org Skickat: fredag, 27 jun 2014 10:24:23 Ämne: Re: [PATCH] Fix: wrong offset for CET timezone On Fri, Jun 27, 2014 at 12:08 AM, Robin Rosenberg robin.rosenb...@dewire.com wrote: 1 hour in winter and 2 in summer, although some standards seem to say that summer time is really called CEST, computers apply DST to CET in summer. $ TZ=UTC date Tor 26 Jun 2014 22:08:01 UTC $ TZ=CET date Fre 27 Jun 2014 00:08:05 CEST Like Andreas pointed out, this seems an implementation detail. CET is still +1, while CEST is +2. I mentioned that myself... If you take a look at the official IANA tzdata: http://www.iana.org/time-zones/repository/releases/tzdata2014e.tar.gz For europe, it's something like std: CET and dst: CEST. The current doc is not correct either; we should write something like either +1 or +2 depending on DST (there seems to be a 2dst as well which gets +3 offset); I knew there gotta be a catch. I don't think glibc is advanced enough to provide two different summer times for the same TZ. Usually the best way of handling timezones is to use the proper location format (e.g. TZ='Europe/Rome') and then letting the system pick the proper offset; we might say something like ' Europe/Rome which is +1 in winter ' in the doc, but I'd say that's nitpicking. Probably is. I think mentioning that CET can be either +1 or +2 is enough. + For example CET (here), which is nominally 1 hour ahead of UTC is encoded + as `+0100`, but when summer savings apply, CET is two hours ahead and encoded + as `+0200`). -- robin -- To unsubscribe from this list: send the line unsubscribe git in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH] Fix: wrong offset for CET timezone
From: Alan Franzoni usern...@franzoni.eu Signed-off-by: Alan Franzoni usern...@franzoni.eu --- Documentation/date-formats.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/date-formats.txt b/Documentation/date-formats.txt index ccd1fc8..284308a 100644 --- a/Documentation/date-formats.txt +++ b/Documentation/date-formats.txt @@ -11,7 +11,7 @@ Git internal format:: It is `unix timestamp time zone offset`, where `unix timestamp` is the number of seconds since the UNIX epoch. `time zone offset` is a positive or negative offset from UTC. - For example CET (which is 2 hours ahead UTC) is `+0200`. + For example CET (which is 1 hour ahead UTC) is `+0100`. RFC 2822:: The standard email format as described by RFC 2822, for example -- 2.0.0 -- To unsubscribe from this list: send the line unsubscribe git in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH] Fix: wrong offset for CET timezone
- Ursprungligt meddelande - Från: Alan Franzoni mail...@franzoni.eu Till: git@vger.kernel.org Kopia: Alan Franzoni usern...@franzoni.eu Skickat: torsdag, 26 jun 2014 15:53:32 Ämne: [PATCH] Fix: wrong offset for CET timezone From: Alan Franzoni usern...@franzoni.eu Signed-off-by: Alan Franzoni usern...@franzoni.eu --- Documentation/date-formats.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/date-formats.txt b/Documentation/date-formats.txt index ccd1fc8..284308a 100644 --- a/Documentation/date-formats.txt +++ b/Documentation/date-formats.txt @@ -11,7 +11,7 @@ Git internal format:: It is `unix timestamp time zone offset`, where `unix timestamp` is the number of seconds since the UNIX epoch. `time zone offset` is a positive or negative offset from UTC. - For example CET (which is 2 hours ahead UTC) is `+0200`. + For example CET (which is 1 hour ahead UTC) is `+0100`. 1 hour in winter and 2 in summer, although some standards seem to say that summer time is really called CEST, computers apply DST to CET in summer. $ TZ=UTC date Tor 26 Jun 2014 22:08:01 UTC $ TZ=CET date Fre 27 Jun 2014 00:08:05 CEST -- robin RFC 2822:: The standard email format as described by RFC 2822, for example -- 2.0.0 -- To unsubscribe from this list: send the line unsubscribe git in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe git in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
