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DateAlmanac

What is ACST in PST?

Pacific Time is 18 hours 30 minutes behind

Australian Central Time is on UTC+10:30 and Pacific Time is on UTC−8:00 right now. Australian Central Time is on daylight saving, so its clocks read ACDT. The gap changes during the year — see below.

Convert a time

PST — Pacific Time

11:30 pm

PST, Fri, the previous day

Time in Adelaide
6:59:20 PM
Time in Los Angeles
12:29:20 AM
Difference
−18:30 h
Next clock change
March 14, 2027

When the difference changes

Australian Central Time and Pacific 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:

  1. Now – March 14, 2027Pacific Time is 18 hours 30 minutes behind
  2. March 14, 2027 – April 4, 2027Pacific Time is 17 hours 30 minutes behind
  3. April 4, 2027 – October 3, 2027Pacific Time is 16 hours 30 minutes behind
  4. October 3, 2027 – November 7, 2027Pacific Time is 17 hours 30 minutes behind
  5. November 7, 2027 – onwardsPacific Time is 18 hours 30 minutes behind

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Australian Central Time

Sunday, April 4, 2027

Clocks go back one hour — 3:00 am becomes 2:00 am local time, and the zone is on ACST after that.

Pacific Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on PDT after that.

ACST to PST conversion table

Every hour of Saturday, November 7, 2026, converted from Australian Central Time to Pacific Time. 19 of the 24 hours fall on a different calendar day in Los Angeles, which is marked.

12:00 am ACDT
5:30 am PST−1 day
1:00 am ACDT
6:30 am PST−1 day
2:00 am ACDT
7:30 am PST−1 day
3:00 am ACDT
8:30 am PST−1 day
4:00 am ACDT
9:30 am PST−1 day
5:00 am ACDT
10:30 am PST−1 day
6:00 am ACDT
11:30 am PST−1 day
7:00 am ACDT
12:30 pm PST−1 day
8:00 am ACDT
1:30 pm PST−1 day
9:00 am ACDT
2:30 pm PST−1 day
10:00 am ACDT
3:30 pm PST−1 day
11:00 am ACDT
4:30 pm PST−1 day
12:00 pm ACDT
5:30 pm PST−1 day
1:00 pm ACDT
6:30 pm PST−1 day
2:00 pm ACDT
7:30 pm PST−1 day
3:00 pm ACDT
8:30 pm PST−1 day
4:00 pm ACDT
9:30 pm PST−1 day
5:00 pm ACDT
10:30 pm PST−1 day
6:00 pm ACDT
11:30 pm PST−1 day
7:00 pm ACDT
12:30 am PST
8:00 pm ACDT
1:30 am PST
9:00 pm ACDT
2:30 am PST
10:00 pm ACDT
3:30 am PST
11:00 pm ACDT
4:30 am PST

Scheduling between the two

Working hours overlap from 9:00 am to 1:00 pm ACDT, which is 2:30 pm to 6:30 pm PST. Anything inside that window falls in the normal working day at both ends.

Australian Central Time (ACDT) is used in South Australia and the Northern Territory, on a half-hour offset from the east coast

Pacific Time (PST) is used in San Francisco, Seattle, Las Vegas and Vancouver

Other conversions