Atlantic Time Now
AST · AST
10:45:20 AM
Your time
About this zone
- Generic name
- Atlantic Time (AST)
- Standard time
- AST · UTC−4
- Daylight time
- Not used
- IANA identifier
America/Puerto_Rico
Atlantic Standard Time is used in Puerto Rico and the U.S. Virgin Islands all year, with no daylight saving time.
States and territories
Daylight saving time
Daylight saving timeNot observedClocks here stay on AST all year. Most of the United States next changes its clocks on Sunday, March 14, 2027.
Frequently asked questions
What is the current Atlantic Time?
The live clock at the top of this page shows the current Atlantic Time. The zone is currently UTC−4, written AST.
What is the difference between AST and AST?
Atlantic Time does not use daylight saving time, so it stays on AST (UTC−4) all year.