GMT to ACST converter

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

GMT12:07 AMSat 31 Oct 2026

→

ACST10:37 AMSat 31 Oct 2026

ACST is 10 h 30 min ahead of GMT.

Pick a time in GMT

⇄ ACST to GMT

9:00 AM GMT = 7:30 PM ACST same day

Best time to meet

No hour falls inside 9 AM to 5 PM in both places. The least painful: around 9:00 AM GMT, which is 7:30 PM ACST.

GMT to ACST time table

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

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

Quick answers

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

Does the gap change during the year?

Yes, because of daylight saving. Until 3 Apr 2027: ACST is 10 h 30 min ahead of GMT. From 3 Apr 2027 to 2 Oct 2027: ACST is 9 h 30 min ahead of GMT. From 2 Oct 2027 to 1 Apr 2028: ACST is 10 h 30 min ahead of GMT.

GMT does not change its clocks. 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).

About GMT and ACST

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.

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.

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