Quick answer
- Zone: Atlantic Standard Time (AST) = UTC−4.
- Daylight saving: Puerto Rico does not observe daylight saving time.
- Vs Eastern: same clock time as Eastern Daylight Time in summer; one hour ahead of Eastern Standard Time in winter.
What time is it in Puerto Rico?
Puerto Rico keeps Atlantic Standard Time (AST), which is UTC−4 all year. The U.S. Virgin Islands use the same Atlantic zone. Mainland U.S. states do not keep Atlantic Time as their primary zone, which is why mainland visitors sometimes need a moment to translate meeting times.
No daylight saving time
Puerto Rico does not switch clocks for daylight saving. When the U.S. East Coast is on Eastern Daylight Time (EDT, also UTC−4), San Juan and New York show the same wall time. When the East Coast falls back to Eastern Standard Time (EST, UTC−5), Puerto Rico stays on AST and is one hour ahead of New York.
Practical tips
- Phone clocks usually set themselves correctly on arrival if automatic time zone is on.
- Hurricane advisories from the National Hurricane Center often label times in AST when storms threaten the Caribbean — the same offset as EDT through much of Atlantic hurricane season.
- For live island conditions see Puerto Rico right now.
Frequently asked questions
What time zone is Puerto Rico in?
Atlantic Standard Time (AST), UTC−4, year-round.
Does Puerto Rico have daylight saving time?
No. The clocks stay on AST all year.
Is Puerto Rico on Eastern Time?
Not formally. In summer AST matches Eastern Daylight Time; in winter Puerto Rico is one hour ahead of Eastern Standard Time.
Sources we checked
Checked in October 2026. Where a fact could not be confirmed against a primary source, we removed it or said so.
Originally published on PuertoRico.com (2026-10-28). Reviewed and updated October 2026: facts were checked against the sources above.