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

ET 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, 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.

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

Is ET ahead of or behind AST right now?

ET is currently 1 hour behind AST.

What is the current AST to ET time difference?

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

Does the AST → ET offset change during the year?

No. Neither Atlantic Standard Time nor Eastern 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 ET observe daylight saving time?

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

What time is 3 AM AST in ET?

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

What time is 8 AM AST in ET?

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

What time is 9 AM AST in ET?

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

What time is 10 AM AST in ET?

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

What time is 11 AM AST in ET?

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

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

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

What time is 2 PM AST in ET?

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

What time is 3 PM AST in ET?

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

What time is 4 PM AST in ET?

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

What time is 5 PM AST in ET?

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

What time is 9 PM AST in ET?

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

What time is 10 PM AST in ET?

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

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

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 ET — 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 ET refer to?

ET refers to Eastern 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 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.

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

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