AST to EST Time — Convert Atlantic Standard Time to Eastern Standard Time (US)

EST is currently 1 hour behind AST.

On Clockjumper, AST refers to Atlantic Standard Time in Atlantic Canada and the Caribbean (UTC−4). The same letters are also used for Arabia Standard Time (UTC+3) — check the city or UTC offset to be sure which is meant.

On Clockjumper, EST refers to Eastern Standard Time in the United States (UTC−5). The US East Coast observes EST in winter and switches to EDT (UTC−4) during daylight saving time.

The AST → EST offset stays constant across the year — neither zone shifts for daylight saving in a way that changes this gap.

Is EST ahead of or behind AST right now?

EST is currently 1 hour behind AST.

What is the current AST to EST time difference?

Right now the gap is 1 hour — EST is 1 hour behind AST.

Does the AST → EST offset change during the year?

No. Neither Atlantic Standard Time nor Eastern Standard Time (US) shifts for daylight saving in a way that changes this offset — the gap is the same all year.

Does AST observe daylight saving time?

AST is itself the standard-time form. Atlantic Standard Time is in force at UTC-4 through the winter months; outside that window the same zone is on ADT (UTC-3).

Does EST observe daylight saving time?

EST is itself the standard-time form. Eastern Standard Time (US) is in force at UTC-5 through the winter months; outside that window the same zone is on EDT (UTC-4).

What time is 3 AM AST in EST?

3:00 AM AST is 2:00 AM EST.

What time is 8 AM AST in EST?

8:00 AM AST is 7:00 AM EST.

What time is 9 AM AST in EST?

9:00 AM AST is 8:00 AM EST.

What time is 10 AM AST in EST?

10:00 AM AST is 9:00 AM EST.

What time is 11 AM AST in EST?

11:00 AM AST is 10:00 AM EST.

What time is 12 PM (noon) AST in EST?

12:00 PM AST is 11:00 AM EST.

What time is 2 PM AST in EST?

2:00 PM AST is 1:00 PM EST.

What time is 3 PM AST in EST?

3:00 PM AST is 2:00 PM EST.

What time is 4 PM AST in EST?

4:00 PM AST is 3:00 PM EST.

What time is 5 PM AST in EST?

5:00 PM AST is 4:00 PM EST.

What time is 9 PM AST in EST?

9:00 PM AST is 8:00 PM EST.

What time is 10 PM AST in EST?

10:00 PM AST is 9:00 PM EST.

When is the best time to schedule a call between AST and EST?

The working-hours overlap (09:00–17:00 in both zones) runs roughly 10:00 AM – 5:00 PM AST (≈ 7 hours). The midpoint of that window — 1:30 PM AST, 12:30 PM EST — is the safest single slot to propose for a live call.

What time zone does AST refer to?

AST refers to Atlantic Standard Time (IANA: America/Halifax).

What time zone does EST refer to?

EST refers to Eastern Standard Time (US) (IANA: America/New_York).

Is AST on this page the same as other zones that share the letters "AST"?

On Clockjumper, AST refers to Atlantic Standard Time in Atlantic Canada and the Caribbean (UTC−4). The same letters are also used for Arabia Standard Time (UTC+3) — check the city or UTC offset to be sure which is meant.

Is EST on this page the same as other zones that share the letters "EST"?

On Clockjumper, EST refers to Eastern Standard Time in the United States (UTC−5). The US East Coast observes EST in winter and switches to EDT (UTC−4) during daylight saving time.

• EST to AST
• AST to CST
• AEDT to EST
• AST to GMT
• AEST to EST
• AST to IST
• Berlin to EST
• AST to MST
• BST to EST
• AST to PST
• CDT to EST
• CST to AST
• CEST to EST
• GMT to AST
• CET to EST

• About AST (Atlantic Standard Time) →
• About EST (Eastern Standard Time (US)) →
• All timezone conversion pages →
• Explore workday-overlap research →