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WIT to ACST Converter

Updating current time…
WIT
Eastern Indonesian Time
GMT +9
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ACST
Australian Central Standard Time
GMT +9:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ACST is not used on this date
This converter keeps ACST at GMT +9:30. Adelaide uses ACDT (GMT +10:30) on this date. Open the ACDT converter, or choose Adelaide, Adelaide Hills, or Mount Gambier for city-specific time.

Quick answers

Selected conversion

9:00 pm21:00 WIT (UTC+9), Oct 7, 2026 = 9:30 pm21:30 ACST (UTC+9:30), Oct 7, 2026

WIT is 30 minutes behind ACST.

WIT and ACST examples

These examples always use WIT (UTC+9) and ACST (UTC+9:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

WIT is 30 minutes behind ACST.

How the time difference changes

WIT is 30 minutes behind ACST year-round.

Working hours of 9:00 am to 5:00 pm in WIT correspond to 9:30 am to 5:30 pm in ACST.Working hours of 09:00 to 17:00 in WIT correspond to 09:30 to 17:30 in ACST.

Compare WIT time with ACST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Eastern Indonesian Time is 30 minutes behind Australian Central Standard Time.
9:00 pm21:00 in WIT is 9:30 pm21:30 in ACST

WIT to ACST call time
Best time for a conference call or a meeting is between 9am-4:30pm09:00-16:30 in WIT which corresponds to 9:30am-5pm09:30-17:00 in ACST

9:00 pm21:00 Eastern Indonesian Time (WIT). Offset UTC +9:00 hours
9:30 pm21:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours

9:00 pm21:00 WIT / 9:30 pm21:30 ACST

WITACST
12:00am12:30am
1:00am1:30am
2:00am2:30am
3:00am3:30am
4:00am4:30am
5:00am5:30am
6:00am6:30am
7:00am7:30am
8:00am8:30am
9:00am9:30am
10:00am10:30am
11:00am11:30am
12:00pm12:30pm
1:00pm1:30pm
2:00pm2:30pm
3:00pm3:30pm
4:00pm4:30pm
5:00pm5:30pm
6:00pm6:30pm
7:00pm7:30pm
8:00pm8:30pm
9:00pm9:30pm
10:00pm10:30pm
11:00pm11:30pm
00:0000:30
01:0001:30
02:0002:30
03:0003:30
04:0004:30
05:0005:30
06:0006:30
07:0007:30
08:0008:30
09:0009:30
10:0010:30
11:0011:30
12:0012:30
13:0013:30
14:0014:30
15:0015:30
16:0016:30
17:0017:30
18:0018:30
19:0019:30
20:0020:30
21:0021:30
22:0022:30
23:0023:30

Eastern Indonesian Time

Offset: WIT is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Indonesia

Principal Cities: The largest city in the WIT time zone is Jayapura in Indonesia, with about 410,852 people. Other major cities in this time zone include Ambon, Sorong, Ternate, Abepura.

Daylight Saving: Clocks in Eastern Indonesian Time (WIT) do not change for daylight saving time, so WIT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

WIT Time Zone Geo Map
WIT timezone map

WIT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for WIT
  • I - short form of 'India'
IANA/Olson: Reflects WIT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jayapura
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Australian Central Standard Time

Offset: ACST is 9 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Australia

Countries using this time zone: Australia

Principal Cities: The largest city in the ACST time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Darwin, Adelaide Hills, Palmerston, Alice Springs.

ACST Time Zone Geo Map
ACST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Australian Central Daylight Time (ACDT).

Daylight saving time clock moves forward for one hourEnd: Australian Central Standard Time (ACST) ended on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the first Sunday of October.

Daylight saving time clock moves back for one hourStart: Australian Central Standard Time (ACST) starts on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00. Standard time starts annually on the first Sunday of April.

See upcoming clock changes worldwide.

ACST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0930 - basic
  • +09:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates an offset of nine hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects ACST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/Darwin
  • Australia/North
  • Australia/South
  • Australia/Yancowinna
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT