What is AST in PST?
Pacific Time is 4 hours behind
Convert a time
PST — Pacific Time
12:00 am
PST, Sat
- Time in Halifax
- 4:28:56 AM
- Time in Los Angeles
- 12:28:56 AM
- Difference
- −4 h
- Next clock change
- March 14, 2027
Daylight saving
Atlantic Time
Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on ADT after that.
Pacific Time
Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on PDT after that.
AST to PST conversion table
Every hour of Saturday, November 7, 2026, converted from Atlantic Time to Pacific Time. 4 of the 24 hours fall on a different calendar day in Los Angeles, which is marked.
- 12:00 am AST
- 8:00 pm PST−1 day
- 1:00 am AST
- 9:00 pm PST−1 day
- 2:00 am AST
- 10:00 pm PST−1 day
- 3:00 am AST
- 11:00 pm PST−1 day
- 4:00 am AST
- 12:00 am PST
- 5:00 am AST
- 1:00 am PST
- 6:00 am AST
- 2:00 am PST
- 7:00 am AST
- 3:00 am PST
- 8:00 am AST
- 4:00 am PST
- 9:00 am AST
- 5:00 am PST
- 10:00 am AST
- 6:00 am PST
- 11:00 am AST
- 7:00 am PST
- 12:00 pm AST
- 8:00 am PST
- 1:00 pm AST
- 9:00 am PST
- 2:00 pm AST
- 10:00 am PST
- 3:00 pm AST
- 11:00 am PST
- 4:00 pm AST
- 12:00 pm PST
- 5:00 pm AST
- 1:00 pm PST
- 6:00 pm AST
- 2:00 pm PST
- 7:00 pm AST
- 3:00 pm PST
- 8:00 pm AST
- 4:00 pm PST
- 9:00 pm AST
- 5:00 pm PST
- 10:00 pm AST
- 6:00 pm PST
- 11:00 pm AST
- 7:00 pm PST
Scheduling between the two
Working hours overlap from 1:00 pm to 6:00 pm AST, which is 9:00 am to 2:00 pm PST. Anything inside that window falls in the normal working day at both ends.
A note on AST: it can also mean Arabia Standard Time (UTC+3). This page means Atlantic Time.
Atlantic Time (AST) is used in Nova Scotia, New Brunswick and Puerto Rico
Pacific Time (PST) is used in San Francisco, Seattle, Las Vegas and Vancouver
Other conversions
- PST to AST
- AST to UTC
- AST to GMT
- AST to EST
- AST to CST
- AST to MST
- AST to AKST
- AST to HST
- AST to BST
- AST to CET
- AST to IST
- AST to CST (China)
- AST to JST
- AST to AEST
- AST to Mexico City
- AST to BRT
- AST to ART
- AST to EET
- AST to WET
- AST to MSK
- AST to TRT
- AST to SAST
- AST to WAT
- AST to EAT
- AST to GST
- AST to PKT
- AST to ICT
- AST to WIB
- AST to SGT
- AST to HKT
- AST to KST
- AST to PHT
- AST to AWST
- AST to ACST
- AST to NZST
- All zones