PostgreSQL 9.0.4 Documentation
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# 45.60. `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. 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 45-61. `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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