Bruce Momjian <pgman@candle.pha.pa.us> writes:
> I am playing with our allowed timezone settings and saw a few strange
> things. It understands "EST5EDT", but how does it understand "XYT5ABT"?
Because the code in src/timezone does what the POSIX standard says it
must do. The relevant man page on my HPUX box says
TZ TZ sets time zone information. TZ can be set using the format:
[:]STDoffset[DST[offset][,rule]]
where:
STD and DST Three or more bytes that designate the standard time
zone(STD) and summer (or daylight-savings) time zone (DST) STD is
required. If DST is not specified, summer time does not apply in this
locale. Any characters other than digits, comma (,), minus
(-),plus (+), or ASCII NUL are allowed.
offset offset is the value that must be added to local time
toarrive at Coordinated Universal Time (UTC). Offset is of the
form :
hh[:mm[:ss]]
... etc etc ...
> Also, JST doesn't work anymore, but JST9 does.
JST9 is valid per the POSIX rules. JST isn't listed as a zone name in
the zic database, so it's not valid. (Try "Japan" instead.)
regards, tom lane