Updating current time…
ACT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ULAT
UTC+8
same time
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 pm20:00 ACT (UTC+8), Oct 19, 2026 = 8:00 pm20:00 ULAT (UTC+8), Oct 19, 2026

ACT and ULAT have the same local time.

ACT and ULAT examples

These examples always use ACT (UTC+8) and ULAT (UTC+8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

ACT and ULAT have the same local time.

How the time difference changes

ACT and ULAT have the same time year-round.

Working hours of 9:00 am to 6:00 pm in ACT correspond to 9:00 am to 6:00 pm in ULAT.Working hours of 09:00 to 18:00 in ACT correspond to 09:00 to 18:00 in ULAT.

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

Time Difference

ASEAN Common Time and Ulaanbaatar Time have the same local time.
8:00 pm20:00 in ACT is 8:00 pm20:00 in ULAT

ACT to ULAT call time
Best time for a conference call or a meeting is between 9am-6pm09:00-18:00 in ACT which corresponds to 9am-6pm09:00-18:00 in ULAT

8:00 pm20:00 ASEAN Common Time (ACT). Offset UTC +8:00 hours
8:00 pm20:00 Ulaanbaatar Time (ULAT). Offset UTC +8:00 hours

8:00 pm20:00 ACT / 8:00 pm20:00 ULAT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
ACTULAT
12:00am
1:00am
2:00am
3:00am
4:00am
5:00am
6:00am
7:00am
8:00am
9:00am
10:00am
11:00am
12:00pm
1:00pm
2:00pm
3:00pm
4:00pm
5:00pm
6:00pm
7:00pm
8:00pm
9:00pm
10:00pm
11:00pm
00:00
01:00
02:00
03:00
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06:00
07:00
08:00
09:00
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11:00
12:00
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18:00
19:00
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22:00
23:00

ASEAN Common Time

Offset: ACT is 8 hours ahead of Greenwich Mean Time (GMT).

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; see upcoming clock changes worldwide.

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

Ulaanbaatar Time

Offset: ULAT is 8 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Mongolia

Principal Cities: The largest city in the ULAT time zone is Ulan Bator in Mongolia, with about 844,818 people. Other major cities in this time zone include Erdenet, Darhan, Choibalsan, Nalayh.

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

ULAT 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 ULAT
  • 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