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

AST is currently 1 hour ahead of ET.

On Clockjumper, ET refers to the Eastern Time zone of the United States and Canada. ET is an umbrella name rather than a fixed offset: it means EST (UTC−5) in winter and EDT (UTC−4) in summer, and these pages show whichever is currently in force.

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 ET → 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 ET right now?

AST is currently 1 hour ahead of ET.

What is the current ET to AST time difference?

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

Does the ET → AST offset change during the year?

No. Neither Eastern 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 ET observe daylight saving time?

Yes — Eastern Time (US) observes DST, so its UTC offset shifts by 1 hour between winter and summer.

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 ET in AST?

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

What time is 8 AM ET in AST?

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

What time is 9 AM ET in AST?

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

What time is 10 AM ET in AST?

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

What time is 11 AM ET in AST?

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

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

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

What time is 2 PM ET in AST?

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

What time is 3 PM ET in AST?

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

What time is 4 PM ET in AST?

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

What time is 5 PM ET in AST?

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

What time is 9 PM ET in AST?

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

What time is 10 PM ET in AST?

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

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

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

What time zone does ET refer to?

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

What time zone does AST refer to?

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

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

On Clockjumper, ET refers to the Eastern Time zone of the United States and Canada. ET is an umbrella name rather than a fixed offset: it means EST (UTC−5) in winter and EDT (UTC−4) in summer, and these pages show whichever is currently in force.

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

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