Updating current time…
ULAT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IST
UTC+5:30
2h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 pm20:00 ULAT (UTC+8), Oct 18, 2026 = 5:30 pm17:30 IST (UTC+5:30), Oct 18, 2026

ULAT is 2 hours and 30 minutes ahead of IST.

ULAT and IST examples

These examples always use ULAT (UTC+8) and IST (UTC+5:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

ULAT is 2 hours and 30 minutes ahead of IST.

How the time difference changes

ULAT is 2 hours and 30 minutes ahead of IST year-round.

Working hours of 9:00 am to 6:00 pm in ULAT correspond to 6:30 am to 3:30 pm in IST.Working hours of 09:00 to 18:00 in ULAT correspond to 06:30 to 15:30 in IST.

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

Time Difference

Ulaanbaatar Time is 2 hours and 30 minutes ahead of India Standard Time.
8:00 pm20:00 in ULAT is 5:30 pm17:30 in IST

ULAT to IST call time
Best time for a conference call or a meeting is between 11:30am-6pm11:30-18:00 in ULAT which corresponds to 9am-3:30pm09:00-15:30 in IST

8:00 pm20:00 Ulaanbaatar Time (ULAT). Offset UTC +8:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours

8:00 pm20:00 ULAT / 5:30 pm17:30 IST

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Hourly time comparison
ULATIST
9:30pm previous day
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11:30pm previous day
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21:30 previous day
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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

India Standard Time

Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: India

Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bengaluru, Hyderabad, Ahmedabad.

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

Current time in India: India time now

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates an offset of five hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
  • India Standard Time - UTC +5:30
  • Irish Standard Time - UTC +1
  • Israel Standard Time - UTC +2