IRKT to IST Converter

Updating current time…
IRKT
Irkutsk Time
UTC+8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IST
India Standard Time
UTC+5:30
2h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 pm20:00 IRKT (UTC+8), Nov 13, 2026 = 5:30 pm17:30 IST (UTC+5:30), Nov 13, 2026

IRKT is 2 hours and 30 minutes ahead of IST.

IRKT and IST examples

These examples always use IRKT (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.

IRKT is 2 hours and 30 minutes ahead of IST.

How the time difference changes

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

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

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

Time Difference

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

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

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

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

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
IRKTIST
9:30pm previous day
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11:30pm previous day
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21:30 previous day
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Irkutsk Time

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

Countries using this time zone: Russia

Principal Cities: The largest city in the IRKT time zone is Irkutsk in Russia, with about 623,869 people. Other major cities in this time zone include Ulan-Ude, Bratsk, Angarsk, Ust’-Ilimsk.

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

Map of the areas on Irkutsk Time (IRKT)
IRKT all year

Open the world time zone map© OpenStreetMap

IRKT 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 IRKT
  • 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

Map of the areas on India Standard Time (IST)
IST all year

Open the world time zone map© OpenStreetMap

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