United States Time Zone Abbreviations
Time Zone Abbreviations used in the United States. View individual locations to determine the time zone observed.
United States Time Zone Abbreviations with UTC/GMT Offsets
| ABBREVIATION | TIME ZONE NAME | UTC OFFSET |
| AST | ATLANTIC STANDARD TIME | UTC - 4 |
| EST | EASTERN STANDARD TIME | UTC - 5 |
| EDT | EASTERN DAYLIGHT TIME | UTC - 4 |
| CST | CENTRAL STANDARD TIME | UTC - 6 |
| CDT | CENTRAL DAYLIGHT TIME | UTC - 5 |
| MST | MOUNTAIN STANDARD TIME | UTC - 7 |
| MDT | MOUNTAIN DAYLIGHT TIME | UTC - 6 |
| PST | PACIFIC STANDARD TIME | UTC - 8 |
| PDT | PACIFIC DAYLIGHT TIME | UTC - 7 |
| AKST | ALASKA TIME | UTC - 9 |
| AKDT | ALASKA DAYLIGHT TIME | UTC - 8 |
| HST | HAWAII STANDARD TIME | UTC - 10 |
| HAST | HAWAII-ALEUTIAN STANDARD TIME | UTC - 10 |
| HADT | HAWAII-ALEUTIAN DAYLIGHT TIME | UTC - 9 |
| SST | SAMOA STANDARD TIME | UTC - 11 |
| SDT | SAMOA DAYLIGHT TIME | UTC - 10 |
| CHST | CHAMORRO STANDARD TIME | UTC +10 |
Time Zone Abbreviations by Continent or Region
World Time Zone Abbreviations | Military Time Zone Abbreviations
United States Time Zones by State with Current Local Times