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DateAlmanac

What is AEST in ACST?

Australian Central Time is 30 minutes behind

Australian Eastern Time is on UTC+10:00 and Australian Central Time is on UTC+9:30 right now. That gap holds all year, because both zones change their clocks together.

Time in Sydney
10:52:56 PM
Time in Adelaide
10:22:56 PM
Difference
−0:30 h
Next clock change
October 4, 2026

Convert a time

ACST — Australian Central Time

9:30 pm

ACST, Fri

Daylight saving

Australian Eastern Time

Sunday, October 4, 2026

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

Australian Central Time

Sunday, October 4, 2026

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

AEST to ACST conversion table

Every hour of Friday, September 25, 2026, converted from Australian Eastern Time to Australian Central Time. 1 of the 24 hours fall on a different calendar day in Adelaide, which is marked.

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

Scheduling between the two

Working hours overlap from 10:00 am to 6:00 pm AEST, which is 9:30 am to 5:30 pm ACST. Anything inside that window falls in the normal working day at both ends.

Australian Eastern Time (AEST) is used in Melbourne, Canberra and Brisbane. Queensland stays on AEST all year while the southern states move to AEDT.

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

Other conversions