Skip to content
DateAlmanac

What is ACST in GST?

Gulf Standard Time is 6 hours 30 minutes behind

Australian Central Time is on UTC+10:30 and Gulf Standard Time is on UTC+4:00 right now. Australian Central Time is on daylight saving, so its clocks read ACDT. The gap changes during the year — see below.

Convert a time

GST — Gulf Standard Time

1:30 pm

GST, Fri

Time in Adelaide
8:38:47 PM
Time in Dubai
2:08:47 PM
Difference
−6:30 h
Next clock change
April 4, 2027

When the difference changes

Australian Central Time and Gulf Standard Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. Now – April 4, 2027Gulf Standard Time is 6 hours 30 minutes behind
  2. April 4, 2027 – October 3, 2027Gulf Standard Time is 5 hours 30 minutes behind
  3. October 3, 2027 – onwardsGulf Standard Time is 6 hours 30 minutes behind

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Australian Central Time

Sunday, April 4, 2027

Clocks go back one hour — 3:00 am becomes 2:00 am local time, and the zone is on ACST after that.

Gulf Standard Time

No clock changes

Gulf Standard Time stays on GST all year, so its offset from UTC never moves.

ACST to GST conversion table

Every hour of Friday, November 13, 2026, converted from Australian Central Time to Gulf Standard Time. 7 of the 24 hours fall on a different calendar day in Dubai, which is marked.

12:00 am ACDT
5:30 pm GST−1 day
1:00 am ACDT
6:30 pm GST−1 day
2:00 am ACDT
7:30 pm GST−1 day
3:00 am ACDT
8:30 pm GST−1 day
4:00 am ACDT
9:30 pm GST−1 day
5:00 am ACDT
10:30 pm GST−1 day
6:00 am ACDT
11:30 pm GST−1 day
7:00 am ACDT
12:30 am GST
8:00 am ACDT
1:30 am GST
9:00 am ACDT
2:30 am GST
10:00 am ACDT
3:30 am GST
11:00 am ACDT
4:30 am GST
12:00 pm ACDT
5:30 am GST
1:00 pm ACDT
6:30 am GST
2:00 pm ACDT
7:30 am GST
3:00 pm ACDT
8:30 am GST
4:00 pm ACDT
9:30 am GST
5:00 pm ACDT
10:30 am GST
6:00 pm ACDT
11:30 am GST
7:00 pm ACDT
12:30 pm GST
8:00 pm ACDT
1:30 pm GST
9:00 pm ACDT
2:30 pm GST
10:00 pm ACDT
3:30 pm GST
11:00 pm ACDT
4:30 pm GST

Scheduling between the two

Working hours overlap from 4:00 pm to 6:00 pm ACDT, which is 9:30 am to 11:30 am GST. Anything inside that window falls in the normal working day at both ends.

Australian Central Time (ACDT) is used in South Australia and the Northern Territory, on a half-hour offset from the east coast

Gulf Standard Time (GST) is used in the UAE and Oman

Other conversions