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The following table lists the North American time zone abbreviations, click on the time zone links for more information about individual time zones and where they are used.
| Abbreviation | Full name | Other abbreviations | Time zone |
|---|---|---|---|
| NST | Newfoundland Standard Time | HNT | UTC - 3:30 hours |
| NDT | Newfoundland Daylight Time | HAT | UTC - 2:30 hours |
| AST | Atlantic Standard Time | HNA | UTC - 4 hours |
| ADT | Atlantic Daylight Time | HAA | UTC - 3 hours |
| EST | Eastern Standard Time | HNE | UTC - 5 hours |
| EDT | Eastern Daylight Time | HAE | UTC - 4 hours |
| CST | Central Standard Time | HNC | UTC - 6 hours |
| CDT | Central Daylight Time | HAC | UTC - 5 hours |
| MST | Mountain Standard Time | HNR | UTC - 7 hours |
| MDT | Mountain Daylight Time | HAR | UTC - 6 hours |
| PST | Pacific Standard Time | HNP | UTC - 8 hours |
| PDT | Pacific Daylight Time | HAP | UTC - 7 hours |
| AKST | Alaska Standard Time | HNY | UTC - 9 hours |
| AKDT | Alaska Daylight Time | HAY | UTC - 8 hours |
| HAST | Hawaii-Aleutian Standard Time | HST | UTC - 10 hours |
| HADT | Hawaii-Aleutian Daylight Time | UTC - 9 hours |