EST to AST Time Converter

Convert Eastern Standard Time (EST) to Atlantic Standard Time (AST). Both time zones are shown live below; current offset between them is 1 hour ahead.

New York · Eastern Standard Time
16:55:25
Sunday, May 10, 2026
EDT · UTC-04:00
Halifax · Atlantic Standard Time
17:55:25
Sunday, May 10, 2026
ADT · UTC-03:00

Convert a specific time

From: EST (New York)
To: AST (Halifax)
--:--

Daylight Saving status right now

EST (Eastern Standard Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-11-01
Offset shift
UTC-04:00 → UTC-05:00
AST (Atlantic Standard Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-11-01
Offset shift
UTC-03:00 → UTC-04:00

When can EST and AST meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
EST
AST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in New York (EST). Each row shows the local working-hours state in that zone for the same moment in time.
7 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 09:00–15:00 EST (10:00–16:00 AST).

Hour-by-hour EST to AST conversion table

EST time (New York)AST time (Halifax)Status
00:00 Sun01:00 SunOff-hours both sides
01:00 Sun02:00 SunOff-hours both sides
02:00 Sun03:00 SunOff-hours both sides
03:00 Sun04:00 SunOff-hours both sides
04:00 Sun05:00 SunOff-hours both sides
05:00 Sun06:00 SunOff-hours both sides
06:00 Sun07:00 SunOff-hours both sides
07:00 Sun08:00 SunOff-hours both sides
08:00 Sun09:00 SunAST working
09:00 Sun10:00 SunBoth at work
10:00 Sun11:00 SunBoth at work
11:00 Sun12:00 SunBoth at work
12:00 Sun13:00 SunBoth at work
13:00 Sun14:00 SunBoth at work
14:00 Sun15:00 SunBoth at work
15:00 Sun16:00 SunBoth at work
16:00 Sun17:00 SunEST working
17:00 Sun18:00 SunOff-hours both sides
18:00 Sun19:00 SunOff-hours both sides
19:00 Sun20:00 SunOff-hours both sides
20:00 Sun21:00 SunOff-hours both sides
21:00 Sun22:00 SunOff-hours both sides
22:00 Sun23:00 SunOff-hours both sides
23:00 Sun00:00 MonOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Eastern Standard Time (EST)
IANA identifier
America/New_York
Current UTC offset
UTC-04:00
Current abbreviation
EDT
Major cities in this zone
New YorkMiamiAtlantaBostonPhiladelphia
Atlantic Standard Time (AST)
IANA identifier
America/Halifax
Current UTC offset
UTC-03:00
Current abbreviation
ADT
Major cities in this zone
Halifax

Sun today in New York and Halifax

New York
Sunrise
05:45
Sunset
20:02
Solar noon
12:53
Daylight
14h 16m

Related converters

AST to EST (reverse)EST to PSTEST to GMTEST to UTCEST to CETEST to ISTPST to ASTGMT to ASTUTC to ASTCET to ASTIST to AST
Looking for local time? See time in New York or time in Halifax.

Frequently asked questions

What is the time difference between EST and AST right now?+
AST (Atlantic Standard Time) is currently 1 hour ahead EST (Eastern Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does EST or AST observe daylight saving time?+
EST: observes daylight saving time. AST: observes daylight saving time.
When is the best time to schedule a meeting between EST and AST?+
The strongest overlap is 09:00–15:00 EST (10:00–16:00 AST), giving 7 hours when both sides are within standard 9am-5pm working hours.
What time is it in Halifax when it is 12:00 noon in New York?+
When it is 12:00 Sun in New York (EST), it is 13:00 Sun in Halifax (AST).
Which IANA time zone identifiers are used for EST and AST?+
EST maps to "America/New_York" in the IANA database. AST maps to "America/Halifax". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is New York ahead of or behind Halifax?+
Whether New York (EST) is ahead of or behind Halifax (AST) depends on the current UTC offsets. Right now AST is 1 hour ahead EST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for EST and AST?+
EST is UTC-04:00 (EDT) and AST is UTC-03:00 (ADT). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both EST and AST?+
Yes. There are 7 hours of overlap during standard 9am-5pm working hours, with the strongest window at 09:00–15:00 EST.