Atlantic Standard Time Zone
The Atlantic Standard Time Zone uses AST (UTC−4) all year, with no daylight saving time. Puerto Rico and the U.S. Virgin Islands use AST all year.
| Abbreviations | AST |
|---|---|
| UTC offset | UTC−4 |
| Reference zone | America/Puerto Rico |
| Military letter | Q (Quebec) |
States in the Atlantic Standard Time Zone
Major cities
| City | State |
|---|---|
| San Juan | Puerto Rico |
| Ponce | Puerto Rico |
| Charlotte Amalie | U.S. Virgin Islands |
Outside the US
Atlantic Canada (Nova Scotia, New Brunswick, Prince Edward Island) uses Atlantic time with daylight saving. Many Caribbean islands use AST all year.
Abbreviation pages: AST
Questions people ask
What states are in the Atlantic Standard Time Zone?
2 states and territories use Atlantic Standard Time as their main time, and 0 more have parts in it. They're all listed above.
Does Atlantic Standard Time change for daylight saving?
No. It stays on AST (UTC−4) all year.
What is Atlantic Standard Time in UTC?
UTC−4 all year.
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