Re: [tz] [PATCH 2/3] Replace some zones with links when that doesn't lose non-LMT info.

yoshito_umaoka@us.ibm.com wrote:

If my understanding is correct, the output from zic does not preserve daylight saving amount.

Interesting, this is a better case than Stephen offered. The tzfile does indicate *which* clock settings are DST, so it's possible to determine what is the most recently used base offset for any time. But that's not necessarily the current base offset if there's a change of base offset while a zone remains on DST. There are some instances of that in the database, such as America/Argentina/San_Luis's change from -03:00 to -04:00 on 2008-01-21 while on DST. -zefram