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PostgreSQL 9.1.24 Documentation
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45.67. `pg_timezone_names`

The view pg_timezone_names provides a list of time zone names that are recognized by SET TIMEZONE, along with their associated abbreviations, UTC offsets, and daylight-savings status. (Technically, PostgreSQL uses UT1 rather than UTC because leap seconds are not handled.) Unlike the abbreviations shown in pg_timezone_abbrevs, many of these names imply a set of daylight-savings transition date rules. Therefore, the associated information changes across local DST boundaries. The displayed information is computed based on the current value of CURRENT_TIMESTAMP.

Table 45-68. pg_timezone_names Columns

Name	Type	Description
`name`	`text`	Time zone name
`abbrev`	`text`	Time zone abbreviation
`utc_offset`	`interval`	Offset from UTC (positive means east of Greenwich)
`is_dst`	`boolean`	True if currently observing daylight savings

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45.67. pg_timezone_names

45.67. `pg_timezone_names`