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How to get TimeZone name?

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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

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