(no version information, might be only in CVS)
timezone_name_from_abbr -- Returns the timezone name from abbrevation
abbrTime zone abbreviation.
gmtOffset
Offset from GMT in seconds. Defaults to -1 which means that first found
time zone corresponding to abbr is returned.
Otherwise exact offset is searched and only if not found then the first
time zone with any offset is returned.
isdst
Daylight saving time indicator. If abbr doesn't
exist then the time zone is searched solely by
offset and isdst.