ACST to GMT converter

Australian Central Time (Adelaide) to Greenwich Mean Time (the same as UTC, all year).

ACST10:37 AMSat 31 Oct 2026

→

GMT12:07 AMSat 31 Oct 2026

GMT is 10 h 30 min behind ACST.

Pick a time in ACST

⇄ GMT to ACST

9:00 AM ACST = 10:30 PM GMT 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 GMT time table

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

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

Quick answers

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

Does the gap change during the year?

Yes, because of daylight saving. Until 4 Apr 2027: GMT is 10 h 30 min behind ACST. From 4 Apr 2027 to 3 Oct 2027: GMT is 9 h 30 min behind ACST. From 3 Oct 2027 to 2 Apr 2028: GMT 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). GMT does not change its clocks.

About ACST and GMT

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.

GMT here means Greenwich Mean Time, the clock in the same as UTC, all year. Right now it is UTC+0. It has no daylight saving.

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