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DateAlmanac

What is AST in EST?

Eastern Time is 1 hour behind

Atlantic Time is on UTC−4:00 and Eastern Time is on UTC−5:00 right now. That gap holds all year, because both zones change their clocks on the same dates.

Convert a time

EST — Eastern Time

3:00 am

EST, Sat

Time in Halifax
4:18:25 AM
Time in New York
3:18:25 AM
Difference
−1 h
Next clock change
March 14, 2027

Daylight saving

Atlantic Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on ADT after that.

Eastern Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on EDT after that.

AST to EST conversion table

Every hour of Saturday, November 7, 2026, converted from Atlantic Time to Eastern Time. 1 of the 24 hours fall on a different calendar day in New York, which is marked.

12:00 am AST
11:00 pm EST−1 day
1:00 am AST
12:00 am EST
2:00 am AST
1:00 am EST
3:00 am AST
2:00 am EST
4:00 am AST
3:00 am EST
5:00 am AST
4:00 am EST
6:00 am AST
5:00 am EST
7:00 am AST
6:00 am EST
8:00 am AST
7:00 am EST
9:00 am AST
8:00 am EST
10:00 am AST
9:00 am EST
11:00 am AST
10:00 am EST
12:00 pm AST
11:00 am EST
1:00 pm AST
12:00 pm EST
2:00 pm AST
1:00 pm EST
3:00 pm AST
2:00 pm EST
4:00 pm AST
3:00 pm EST
5:00 pm AST
4:00 pm EST
6:00 pm AST
5:00 pm EST
7:00 pm AST
6:00 pm EST
8:00 pm AST
7:00 pm EST
9:00 pm AST
8:00 pm EST
10:00 pm AST
9:00 pm EST
11:00 pm AST
10:00 pm EST

Scheduling between the two

Working hours overlap from 10:00 am to 6:00 pm AST, which is 9:00 am to 5:00 pm EST. Anything inside that window falls in the normal working day at both ends.

A note on AST: it can also mean Arabia Standard Time (UTC+3). This page means Atlantic Time.

Atlantic Time (AST) is used in Nova Scotia, New Brunswick and Puerto Rico

Eastern Time (EST) is used in Toronto, Atlanta, Miami, Detroit and most of the US east coast

Other conversions