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DateAlmanac

What is WIB in ACST?

Australian Central Time is 3 hours 30 minutes ahead

Western Indonesian Time is on UTC+7:00 and Australian Central Time is on UTC+10:30 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

ACDT — Australian Central Time

8:30 pm

ACDT, Fri

Time in Jakarta
5:08:46 PM
Time in Adelaide
8:38:46 PM
Difference
+3:30 h
Next clock change
April 4, 2027

When the difference changes

Western Indonesian Time and Australian Central 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 3, 2027Australian Central Time is 3 hours 30 minutes ahead
  2. April 3, 2027 – October 2, 2027Australian Central Time is 2 hours 30 minutes ahead
  3. October 2, 2027 – onwardsAustralian Central Time is 3 hours 30 minutes ahead

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

Western Indonesian Time

No clock changes

Western Indonesian Time stays on WIB all year, so its offset from UTC never moves.

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.

WIB to ACST conversion table

Every hour of Friday, November 13, 2026, converted from Western Indonesian Time to Australian Central Time. 3 of the 24 hours fall on a different calendar day in Adelaide, which is marked.

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

Scheduling between the two

Working hours overlap from 9:00 am to 3:00 pm WIB, which is 12:30 pm to 6:30 pm ACDT. 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

Other conversions