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EST to AST: Eastern Time to Atlantic Time

1 hour ahead of EST

AST compared with EST, right now. Swap: AST to EST ⇄

ESTTuesday, November 3, 2026EST · UTC−5ASTTuesday, November 3, 2026AST · UTC−4

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EST to AST conversion table

For Tuesday, November 3, 2026. Rows where both places are inside 9 AM–5 PM are highlighted.

ESTAST
12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM12:00 AM (next day)

About these time zones

EST: Eastern Standard Time

Eastern Time (EST/EDT). New York, Washington, Atlanta, Miami, Boston, Toronto and Montreal. EST is UTC−5; from March to November the region uses EDT, UTC−4.

Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−5 → UTC−4).

AST: Atlantic Standard Time

Atlantic Time (AST/ADT). Nova Scotia, New Brunswick and Prince Edward Island (with daylight saving), plus Puerto Rico and much of the Caribbean, which stay on AST (UTC−4) all year.

Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−4 → UTC−3).

Questions about EST and AST time

What is the time difference between EST and AST?

The current difference is shown at the top of this page. EST uses Eastern Standard Time (EST, UTC−5) as standard time and Eastern Daylight Time (EDT, UTC−4) during daylight saving time; AST uses Atlantic Standard Time (AST, UTC−4) as standard time and Atlantic Daylight Time (ADT, UTC−3) during daylight saving time. The difference can change if only one side observes daylight saving time or if their clocks change on different dates. Choose your meeting date in the converter to check the applicable offset.

When it is 9:00 AM in EST, what time is it in AST?

On Tuesday, November 3, 2026, 9:00 AM in EST was 10:00 AM in AST. The conversion table above shows today’s values.

Do the clocks change in EST or AST?

EST: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−5 → UTC−4). AST: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−4 → UTC−3).

Is EST the same as EDT?

EST is the standard-time name and EDT the daylight-saving name for Eastern Time. People often say EST all year; this converter uses the time actually in effect on the date you choose.

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