Uggggh. According to the POD from Date::Manip, PDT and PST are both valid values for TZ! Plus, there's no mention of 'PST8PDT', something I never would've guessed to try. :(
The following timezone names are currently understood (and can be used
in parsing dates). These are zones defined in RFC 822.
Universal: GMT, UT
US zones : EST, EDT, CST, CDT, MST, MDT, PST, PDT
Military : A to Z (except J)
Other : +HHMM or -HHMM
ISO 8601 : +HH:MM, +HH, -HH:MM, -HH
How did you know that it needs to be PST8PDT for the Pacific time zone? Could you point me to some manpages, books, or hyperlinks?
The only box-specific timezone information I can find on my machine is ZONE="America/Los_Angeles" in /etc/sysconfig/clock, but I don't know if this is Redhat-specific. Could you point me to another file where the default timezone is garnered if TZ isn't set?
I did find a page which gives some specific examples on what to set TZ to. Anyone who finds more info, please share!
Update:
Found this mention of PST8PDT in the docs:
The timezone may be in the STD#DST format (in which case both abbreviations must be in the table above) or any of the formats described above.
However, this also implies that 'PDT' is a valid value for the TZ environment variable, but it doesn't seem to work correctly (see original question).
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