What is PST in ACST?
Australian Central Time is 16 hours 30 minutes ahead
Pacific Time is on UTC−7:00 and Australian Central Time is on UTC+9:30 right now. Pacific Time is on daylight saving, so its clocks read PDT. The gap changes during the year — see below.
- Time in Los Angeles
- 7:56 pm
- Time in Adelaide
- 12:26 pm
- Difference
- +16:30 h
- Next clock change
- October 3, 2026
Convert a time
ACST — Australian Central Time
11:30 am
Wed, the next day
When the difference changes
Pacific Time and Australian Central Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – October 3, 2026Australian Central Time is 16 hours 30 minutes ahead
- October 3, 2026 – November 1, 2026Australian Central Time is 17 hours 30 minutes ahead
- November 1, 2026 – March 14, 2027Australian Central Time is 18 hours 30 minutes ahead
- March 14, 2027 – April 3, 2027Australian Central Time is 17 hours 30 minutes ahead
- April 3, 2027 – October 2, 2027Australian Central Time is 16 hours 30 minutes ahead
- October 2, 2027 – onwardsAustralian Central Time is 17 hours 30 minutes ahead
Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.
Daylight saving
Pacific Time
Clocks go back one hour at 2am local time, becoming PST.
Australian Central Time
Clocks go forward one hour at 2am local time, becoming ACDT.
PST to ACST conversion table
Every hour of Tuesday, September 22, 2026, converted from Pacific Time to Australian Central Time. 16 of the 24 hours fall on a different calendar day in Adelaide, which is marked.
- 12:00 am PDT
- 4:30 pm ACST
- 1:00 am PDT
- 5:30 pm ACST
- 2:00 am PDT
- 6:30 pm ACST
- 3:00 am PDT
- 7:30 pm ACST
- 4:00 am PDT
- 8:30 pm ACST
- 5:00 am PDT
- 9:30 pm ACST
- 6:00 am PDT
- 10:30 pm ACST
- 7:00 am PDT
- 11:30 pm ACST
- 8:00 am PDT
- 12:30 am ACST+1 day
- 9:00 am PDT
- 1:30 am ACST+1 day
- 10:00 am PDT
- 2:30 am ACST+1 day
- 11:00 am PDT
- 3:30 am ACST+1 day
- 12:00 pm PDT
- 4:30 am ACST+1 day
- 1:00 pm PDT
- 5:30 am ACST+1 day
- 2:00 pm PDT
- 6:30 am ACST+1 day
- 3:00 pm PDT
- 7:30 am ACST+1 day
- 4:00 pm PDT
- 8:30 am ACST+1 day
- 5:00 pm PDT
- 9:30 am ACST+1 day
- 6:00 pm PDT
- 10:30 am ACST+1 day
- 7:00 pm PDT
- 11:30 am ACST+1 day
- 8:00 pm PDT
- 12:30 pm ACST+1 day
- 9:00 pm PDT
- 1:30 pm ACST+1 day
- 10:00 pm PDT
- 2:30 pm ACST+1 day
- 11:00 pm PDT
- 3:30 pm ACST+1 day
Scheduling between the two
Working hours overlap from 5:00 pm to 6:00 pm PDT, which is 9:30 am to 10:30 am ACST. Anything inside that window falls in the normal working day at both ends.
Pacific Time (PDT) is used in San Francisco, Seattle, Las Vegas and Vancouver
Australian Central Time (ACST) is used in South Australia and the Northern Territory, on a half-hour offset from the east coast