ACT to ULAST Converter
ULAST is not used on this date
This converter keeps ULAST at UTC+9. Ulaanbaatar uses ULAT (UTC+8) on this date. Open the ULAT converter, or choose Ulaanbaatar, Erdenet, or Darhan for city-specific time.Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
8:00 pm20:00 ACT (UTC+8), Oct 19, 2026 = 9:00 pm21:00 ULAST (UTC+9), Oct 19, 2026
ACT is 1 hour behind ULAST.
ACT and ULAST examples
These examples always use ACT (UTC+8) and ULAST (UTC+9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
ACT is 1 hour behind ULAST.
How the time difference changes
ACT is 1 hour behind ULAST year-round.
Working hours of 9:00 am to 6:00 pm in ACT correspond to 10:00 am to 7:00 pm in ULAST.Working hours of 09:00 to 18:00 in ACT correspond to 10:00 to 19:00 in ULAST.
Compare ACT time with ULAST 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 behind Ulaanbaatar Summer Time.
8:00 pm20:00 in ACT is 9:00 pm21:00 in ULAST
ACT to ULAST call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in ACT which corresponds to 10am-6pm10:00-18:00 in ULAST
8:00 pm20:00 ASEAN Common Time (ACT). Offset UTC +8:00 hours
9:00 pm21:00 Ulaanbaatar Summer Time (ULAST). Offset UTC +9:00 hours
8:00 pm20:00 ACT / 9:00 pm21:00 ULAST
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.
| ACT | ULAST |
|---|---|
| 1:00am | |
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| 12:00am next day | |
| 01:00 | |
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| 19:00 | |
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| 21:00 | |
| 22:00 | |
| 23:00 | |
| 00:00 next day |
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
- +08 - basic short
- +0800 - basic
- +08:00 - extended
- +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.
- Hotel - Military abbreviation for ACT
- H - short form of 'Hotel'
- 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 Summer Time
Offset: ULAST is 9 hours ahead of Greenwich Mean Time (GMT).
ULAST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +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.
- India - Military abbreviation for ULAST
- I - short form of 'India'
- 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