TimeToZone

Adelaide Time to GMT Converter

GMT is 10 hours 30 minutes behind ACDT. 9:00 AM ACDT = 10:30 PM GMT (previous day).

⇄ Swap
Adelaidefrom
Adelaide, Australia
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GMT
Greenwich Mean Time
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GMT is 10 hours 30 minutes behind ACDT at the moment. To convert Adelaide Time to GMT, subtract 10 hours 30 minutes from the Adelaide Time time: 9:00 AM ACDT = 10:30 PM GMT (previous day).

Adelaide Time (Adelaide time) is used in Adelaide, Australia. GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year.

The UK is on GMT only in winter; in summer it uses BST (UTC+1).

Adelaide Time to GMT time conversion table

Adelaide Time to GMT on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

Adelaide TimeGMTDay
12:00 AM ACDT1:30 PM GMTprevious day
1:00 AM ACDT2:30 PM GMTprevious day
2:00 AM ACDT3:30 PM GMTprevious day
3:00 AM ACDT4:30 PM GMTprevious day
4:00 AM ACDT5:30 PM GMTprevious day
5:00 AM ACDT6:30 PM GMTprevious day
6:00 AM ACDT7:30 PM GMTprevious day
7:00 AM ACDT8:30 PM GMTprevious day
8:00 AM ACDT9:30 PM GMTprevious day
9:00 AM ACDT10:30 PM GMTprevious day
10:00 AM ACDT11:30 PM GMTprevious day
11:00 AM ACDT12:30 AM GMTnight
12:00 PM ACDT1:30 AM GMTnight
1:00 PM ACDT2:30 AM GMTnight
2:00 PM ACDT3:30 AM GMTnight
3:00 PM ACDT4:30 AM GMTnight
4:00 PM ACDT5:30 AM GMTnight
5:00 PM ACDT6:30 AM GMT—
6:00 PM ACDT7:30 AM GMT—
7:00 PM ACDT8:30 AM GMT—
8:00 PM ACDT9:30 AM GMT—
9:00 PM ACDT10:30 AM GMT—
10:00 PM ACDT11:30 AM GMT—
11:00 PM ACDT12:30 PM GMT—
  • Work rows — 9 AM–5 PM in both places
  • Night in the destination (10 PM–6 AM)

How to convert Adelaide Time to GMT

Subtract 10 hours 30 minutes from the Adelaide Time time to get GMT.

Example: 9:00 AM ACDT = 10:30 PM GMT (previous day).

Across midnight: 1:00 AM ACDT = 2:30 PM GMT (previous day). The date changes, so always check the day as well as the hour.

Time difference between Adelaide Time and GMT

The time difference between Adelaide Time and GMT is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:

  • 1 Jan 2026 – 4 Apr 2026: GMT is 10 hours 30 minutes behind of Adelaide Time.
  • 5 Apr 2026 – 3 Oct 2026: GMT is 9 hours 30 minutes behind of Adelaide Time.
  • 4 Oct 2026 – 31 Dec 2026: GMT is 10 hours 30 minutes behind of Adelaide Time.

Adelaide Time and GMT during daylight saving time

  • Adelaide Time next changes on 4 Apr 2027: clocks go back one hour at 02:59 local time, from ACDT (UTC+10:30) to ACST (UTC+9:30).
  • GMT does not observe daylight saving time; it stays on UTC+0 all year.

Best time for a meeting between Adelaide Time and GMT

Adelaide Time and GMT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM ACDT, which is 8:30 PM GMT.

Plan a meeting across more time zones.

Adelaide Time to GMT FAQ

What is the time difference between Adelaide Time and GMT?

Right now GMT is 10 hours 30 minutes behind ACDT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.

What is 9 AM Adelaide Time in GMT?

9:00 AM ACDT is 10:30 PM GMT (previous day).

What is 12 PM (noon) Adelaide Time in GMT?

12:00 PM ACDT is 1:30 AM GMT.

Is GMT ahead of or behind Adelaide Time?

GMT is 10 hours 30 minutes behind ACDT, so it is earlier in GMT than in Adelaide Time.

Does Adelaide Time change for daylight saving time?

Yes. Adelaide Time next changes on 4 Apr 2027, when clocks go back one hour from ACDT to ACST.

Does GMT change for daylight saving time?

No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.

What is the best time for a meeting between Adelaide Time and GMT?

Adelaide Time and GMT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM ACDT, which is 8:30 PM GMT.

Related conversions

Convert GMT to Adelaide Time

Convert Adelaide Time to other time zones

Convert other time zones to GMT

Learn more

Updated 7 November 2026. Time zone data: IANA tz database.