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AST to EST: Atlantic Time to Eastern Time

1 hour behind AST

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

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

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AST to EST conversion table

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

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

About these time zones

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).

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).

Questions about AST and EST time

What is the time difference between AST and EST?

The current difference is shown at the top of this page. AST uses Atlantic Standard Time (AST, UTC−4) as standard time and Atlantic Daylight Time (ADT, UTC−3) during daylight saving time; EST uses Eastern Standard Time (EST, UTC−5) as standard time and Eastern Daylight Time (EDT, UTC−4) 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 AST, what time is it in EST?

On Tuesday, November 3, 2026, 9:00 AM in AST was 8:00 AM in EST. The conversion table above shows today’s values.

Do the clocks change in AST or EST?

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

Is AST the same as ADT?

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

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