ACT
ASEAN Common Time
GMT +8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
WIB
Western Indonesian Time
GMT +7
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

ACT is 1 hour ahead of WIB. ACT uses GMT +8, and WIB uses GMT +7 for this comparison.

For example, 8:00 pm ACT is 7:00 pm WIB. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 10am-5pm ACT, which is 9am-4pm WIB.

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

Time Difference

ASEAN Common Time is 1 hour ahead of Western Indonesian Time
8:00 pm20:00 in ACT is 7:00 pm19:00 in WIB

ACT to WIB call time
Best time for a conference call or a meeting is between 10am-5pm in ACT which corresponds to 9am-4pm in WIB

8:00 pm20:00 ASEAN Common Time (ACT). Offset UTC +8:00 hours
7:00 pm19:00 Western Indonesian Time (WIB). Offset UTC +7:00 hours

8:00 pm20:00 ACT / 7:00 pm19:00 WIB

ACTWIB
12am (midnight)11pm
1am12am (midnight)
2am1am
3am2am
4am3am
5am4am
6am5am
7am6am
8am7am
9am8am
10am9am
11am10am
12pm (noon)11am
1pm12pm (noon)
2pm1pm
3pm2pm
4pm3pm
5pm4pm
6pm5pm
7pm6pm
8pm7pm
9pm8pm
10pm9pm
11pm10pm
00:0023:00
01:0000:00
02:0001:00
03:0002:00
04:0003:00
05:0004:00
06:0005:00
07:0006:00
08:0007:00
09:0008:00
10:0009:00
11:0010:00
12:0011:00
13:0012:00
14:0013:00
15:0014:00
16:0015:00
17:0016:00
18:0017:00
19:0018:00
20:0019:00
21:0020:00
22:0021:00
23:0022:00

ASEAN Common Time

Offset: ACT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Daylight Saving: Clocks in ASEAN Common Time (ACT) do not change for daylight saving time, so ACT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

ACT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0800 - sign character (+) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for ACT
  • H - short form of 'Hotel'
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time

Western Indonesian Time

Offset: WIB is 7 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Indonesia

Principal Cities: The largest city in the WIB time zone is Jakarta in Indonesia, with about 8.54 million people. Other major cities in this time zone include Surabaya, Medan, Bandung, Bekasi.

Daylight Saving: Clocks in Western Indonesian Time (WIB) do not change for daylight saving time, so WIB stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

WIB Time Zone Geo Map
WIB timezone map

WIB representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +07 - basic short
  • +0700 - basic
  • +07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0700 - sign character (+) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Golf - Military abbreviation for WIB
  • G - short form of 'Golf'
IANA/Olson: Reflects WIB time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jakarta
  • Asia/Pontianak
Time zones with the GMT +7 offset:
  • CXT - Christmas Island Time
  • DAVT - Davis Time
  • G - Golf Time Zone
  • HOVT - Hovd Time
  • ICT - Indochina Time
  • KRAT - Krasnoyarsk Time
  • NOVST - Novosibirsk Summer Time
  • NOVT - Novosibirsk Time
  • OMSST - Omsk Summer Time
  • WIB - Western Indonesian Time