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

AST is currently 1 hour ahead of 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.

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.

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

Is AST ahead of or behind EST right now?

AST is currently 1 hour ahead of EST.

What is the current EST to AST time difference?

Right now the gap is 1 hour — AST is 1 hour ahead of EST.

Does the EST → AST offset change during the year?

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

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).

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).

What time is 3 AM EST in AST?

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

What time is 8 AM EST in AST?

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

What time is 9 AM EST in AST?

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

What time is 10 AM EST in AST?

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

What time is 11 AM EST in AST?

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

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

12:00 PM EST is 1:00 PM AST.

What time is 2 PM EST in AST?

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

What time is 3 PM EST in AST?

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

What time is 4 PM EST in AST?

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

What time is 5 PM EST in AST?

5:00 PM EST is 6:00 PM AST.

What time is 9 PM EST in AST?

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

What time is 10 PM EST in AST?

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

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

The working-hours overlap (09:00–17:00 in both zones) runs roughly 9:00 AM – 4:00 PM EST (≈ 7 hours). The midpoint of that window — 12:30 PM EST, 1:30 PM AST — is the safest single slot to propose for a live call.

What time zone does EST refer to?

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

What time zone does AST refer to?

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

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.

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.

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

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