Attached are two patches (for 2.4.4 and against the trunk). Apart from the addition of tm_zone, there's one big change: if no timezone fields/members exist on struct tm, the code attempts to read that data from the module's timezone and tzname attributes in order to populate tm_gmtoff and tm_zone; if that fails then both tm_gmtoff and tm_zone are set to None.

The logic for all this is tested in test_time.py, but it really needs checking for suitability and testing on something like HP-UX. Details for the logic here:

http://devrsrc1.external.hp.com/STKT/impacts/i117.html
File Added: tm_gmtoff_zone.diff