Re: Allowed timezone values

Tatsuo Ishii wrote:
> > > 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.)
>
> Shall I add JST to our zic database? It's quite confusing that
> "2005-10-14 12:00 JST" is allowed while ""SET TIME ZONE 'JST'" is not,
> and "2005-10-14 12:00 Japan" is NOT allowed while ""SET TIME ZONE
> 'Japan'" is OK. Note that there's no daylight-saving time in Japan (at
> this point).

I have to say, I am a little confused too. First, why does JST work but
XST does not? Where does it get the JST from? The database?

test=> select '2005-10-14 12:00 JST'::timestamp with time zone;
timestamptz
------------------------
2005-10-13 23:00:00-04
(1 row)

test=> select '2005-10-14 12:00 XST'::timestamp with time zone;
ERROR: invalid input syntax for type timestamp with time zone: "2005-10-14 12:00 XST"

And this is Tatsuo's complaint:

test=> select '2005-10-14 12:00 Asia/Tokyo'::timestamp with time zone;
ERROR: invalid input syntax for type timestamp with time zone: "2005-10-14 12:00 Asia/Tokyo"
test=> set timezone = 'Asia/Tokyo';
SET

And this:

test=> set timezone = 'JST';
ERROR: unrecognized time zone name: "JST"
test=> set timezone = 'JST9';
SET
test=> select '2005-10-14 12:00 JST9'::timestamp with time zone;
ERROR: invalid input syntax for type timestamp with time zone: "2005-10-14 12:00 JST9"

I assume it is related to these two TODO entries:

o Merge hardwired timezone names with the TZ database; allow either
kind everywhere a TZ name is currently taken
o Allow customization of the known set of TZ names (generalize the
present australian_timezones hack)

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