How to get TimeZone name?

Hi,

How can I get timezone name? I can get timezone offset but I could not find any reference of timezone name.

pg_timezone_names does not provide information I am looking for. For example, my system's time zone is set to ' US/Pacific'. If I select timezone name for the offset '-08:00:00' then I do not get what I am expecting.

I have a default setting for timezone and lc_time in my postgresql.conf file.

1-
sde10=> Select current_timestamp - current_timestamp AT TIME ZONE 'UTC' As TimeZoneOffSet;
timezoneoffset
----------------
-08:00:00
(1 row)

2-
sde10=> select * from pg_timezone_names where utc_offset = '-08:00:00';
name | abbrev | utc_offset | is_dst
---------------------+--------+------------+--------
America/Dawson | PST | -08:00:00 | f
America/Ensenada | PST | -08:00:00 | f
America/Los_Angeles | PST | -08:00:00 | f
America/Tijuana | PST | -08:00:00 | f
America/Vancouver | PST | -08:00:00 | f
America/Whitehorse | PST | -08:00:00 | f
Canada/Pacific | PST | -08:00:00 | f
Canada/Yukon | PST | -08:00:00 | f
Etc/GMT+8 | GMT+8 | -08:00:00 | f
Mexico/BajaNorte | PST | -08:00:00 | f
Pacific/Pitcairn | PST | -08:00:00 | f
PST8PDT | PST | -08:00:00 | f
US/Pacific | PST | -08:00:00 | f
US/Pacific-New | PST | -08:00:00 | f
(14 rows)

Thanks.

Ale