ACST to UTC converter

Australian Central Time (Adelaide) to Coordinated Universal Time (the world reference time).

ACST10:37 AMSat 31 Oct 2026

→

UTC12:07 AMSat 31 Oct 2026

UTC is 10 h 30 min behind ACST.

Pick a time in ACST

⇄ UTC to ACST

9:00 AM ACST = 10:30 PM UTC previous day

Best time to meet

No hour falls inside 9 AM to 5 PM in both places, so one side always meets outside office hours.

ACST to UTC time table

For 31 Oct 2026. Green rows: both sides between 9 AM and 5 PM.

ACST	UTC
12:00 AM ACST	1:30 PM UTC previous day
1:00 AM ACST	2:30 PM UTC previous day
2:00 AM ACST	3:30 PM UTC previous day
3:00 AM ACST	4:30 PM UTC previous day
4:00 AM ACST	5:30 PM UTC previous day
5:00 AM ACST	6:30 PM UTC previous day
6:00 AM ACST	7:30 PM UTC previous day
7:00 AM ACST	8:30 PM UTC previous day
8:00 AM ACST	9:30 PM UTC previous day
9:00 AM ACST	10:30 PM UTC previous day
10:00 AM ACST	11:30 PM UTC previous day
11:00 AM ACST	12:30 AM UTC
12:00 PM ACST	1:30 AM UTC
1:00 PM ACST	2:30 AM UTC
2:00 PM ACST	3:30 AM UTC
3:00 PM ACST	4:30 AM UTC
4:00 PM ACST	5:30 AM UTC
5:00 PM ACST	6:30 AM UTC
6:00 PM ACST	7:30 AM UTC
7:00 PM ACST	8:30 AM UTC
8:00 PM ACST	9:30 AM UTC
9:00 PM ACST	10:30 AM UTC
10:00 PM ACST	11:30 AM UTC
11:00 PM ACST	12:30 PM UTC

Quick answers

9:00 AM ACST = 10:30 PM UTC (previous day)
12:00 PM ACST = 1:30 AM UTC
3:00 PM ACST = 4:30 AM UTC
5:00 PM ACST = 6:30 AM UTC
9:00 AM UTC = 7:30 PM ACST
12:00 PM UTC = 10:30 PM ACST
5:00 PM UTC = 3:30 AM ACST (next day)

Does the gap change during the year?

Yes, because of daylight saving. Until 4 Apr 2027: UTC is 10 h 30 min behind ACST. From 4 Apr 2027 to 3 Oct 2027: UTC is 9 h 30 min behind ACST. From 3 Oct 2027 to 2 Apr 2028: UTC is 10 h 30 min behind ACST.

ACST next changes its clocks on 4 Apr 2027 (back 1 h, to UTC+9:30), then on 3 Oct 2027 (forward 1 h, to UTC+10:30). UTC does not change its clocks.

About ACST and UTC

ACST here means Australian Central Time, the clock in Adelaide. Right now it is UTC+10:30. Strictly, ACST is the winter name; in summer these places use ACDT. This page follows their real clock all year.

UTC here means Coordinated Universal Time, the clock in the world reference time. Right now it is UTC+0. It has no daylight saving.

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