AST to PST Time — Convert Atlantic Standard Time to Pacific Standard Time (US)

PST is currently 4 hours 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, PST refers to Pacific Standard Time in the United States (UTC−8). The US West Coast observes PST in winter and switches to PDT (UTC−7) during daylight saving time.

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

Is PST ahead of or behind AST right now?

PST is currently 4 hours behind AST.

What is the current AST to PST time difference?

Right now the gap is 4 hours — PST is 4 hours behind AST.

Does the AST → PST offset change during the year?

No. Neither Atlantic Standard Time nor Pacific 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 PST observe daylight saving time?

PST is itself the standard-time form. Pacific Standard Time (US) is in force at UTC-8 through the winter months; outside that window the same zone is on PDT (UTC-7).

What time is 3 AM AST in PST?

3:00 AM AST is 11:00 PM (previous day) PST.

What time is 8 AM AST in PST?

8:00 AM AST is 4:00 AM PST.

What time is 9 AM AST in PST?

9:00 AM AST is 5:00 AM PST.

What time is 10 AM AST in PST?

10:00 AM AST is 6:00 AM PST.

What time is 11 AM AST in PST?

11:00 AM AST is 7:00 AM PST.

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

12:00 PM AST is 8:00 AM PST.

What time is 2 PM AST in PST?

2:00 PM AST is 10:00 AM PST.

What time is 3 PM AST in PST?

3:00 PM AST is 11:00 AM PST.

What time is 4 PM AST in PST?

4:00 PM AST is 12:00 PM PST.

What time is 5 PM AST in PST?

5:00 PM AST is 1:00 PM PST.

What time is 9 PM AST in PST?

9:00 PM AST is 5:00 PM PST.

What time is 10 PM AST in PST?

10:00 PM AST is 6:00 PM PST.

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

The working-hours overlap (09:00–17:00 in both zones) runs roughly 1:00 PM – 5:00 PM AST (≈ 4 hours). The midpoint of that window — 3:00 PM AST, 11:00 AM PST — 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 PST refer to?

PST refers to Pacific Standard Time (US) (IANA: America/Los_Angeles).

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

On Clockjumper, PST refers to Pacific Standard Time in the United States (UTC−8). The US West Coast observes PST in winter and switches to PDT (UTC−7) during daylight saving time.

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

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