GMT to ACST/ACDT time converter

ACST/ACDT is 10 hours 30 minutes ahead of GMT. When it is 9:00 AM in GMT, it is 7:30 PM in ACST/ACDT.

GMT UTC

Friday, October 16, 2026

ACST/ACDT ACDT

Saturday, October 17, 2026

GMT
Greenwich Mean Time
Fri, Oct 16
UTC
ACST/ACDT
Australian Central Daylight Time
Sat, Oct 17
ACDTUTC+10:30+10h 30m
Finding your time zone…
Shared working hours (9:00–18:00)

GMT to ACST/ACDT conversion table

Every hour of today in GMT and the matching time in ACST/ACDT. Light rows are typical working hours (9:00–18:00).

GMTACST/ACDT
12:00 AM10:30 AM
1:00 AM11:30 AM
2:00 AM12:30 PM
3:00 AM1:30 PM
4:00 AM2:30 PM
5:00 AM3:30 PM
6:00 AM4:30 PM
7:00 AM5:30 PM
8:00 AM6:30 PM
9:00 AM7:30 PM
10:00 AM8:30 PM
11:00 AM9:30 PM
12:00 PM10:30 PM
1:00 PM11:30 PM
2:00 PM12:30 AM+1 day
3:00 PM1:30 AM+1 day
4:00 PM2:30 AM+1 day
5:00 PM3:30 AM+1 day
6:00 PM4:30 AM+1 day
7:00 PM5:30 AM+1 day
8:00 PM6:30 AM+1 day
9:00 PM7:30 AM+1 day
10:00 PM8:30 AM+1 day
11:00 PM9:30 AM+1 day

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:30 AM in GMT (7:30 PM – 10:00 PM in ACST/ACDT): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because GMT and ACST/ACDT switch clocks on different dates:

  • Oct 16, 2026 – Apr 3, 2027: +10h 30m
  • Apr 3, 2027 – Oct 2, 2027: +9h 30m
  • Oct 2, 2027 – Oct 16, 2027: +10h 30m

More conversions

ACDT to GMTGMT to UTCGMT to ESTGMT to CSTGMT to MSTGMT to PSTGMT to CETGMT to MSKGMT to GSTGMT to PKTGMT to ISTGMT to SGTGMT to PHT
UTC to ACDTEST to ACDTCST to ACDTMST to ACDTPST to ACDTCET to ACDTMSK to ACDTGST to ACDTPKT to ACDTIST to ACDTSGT to ACDTPHT to ACDT

Questions and answers

What is the time difference between GMT and ACST/ACDT?

ACST/ACDT is 10 hours 30 minutes ahead of GMT.

What time is it in ACST/ACDT when it is 9 AM in GMT?

When it is 9:00 AM in GMT, it is 7:30 PM in ACST/ACDT.

When is the best time to call ACST/ACDT from GMT?

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:30 AM in GMT (7:30 PM – 10:00 PM in ACST/ACDT): working hours on one side, early or late on the other.

Does the time difference between GMT and ACST/ACDT change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.