IRKT/IRKST
Irkutsk Time
GMT +8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IRKST is not used on this date
This converter uses IRKT (GMT +8), the offset Irkutsk uses on this date. Open the IRKT converter.
IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Compare IRKST 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-5pm in IRKT which corresponds to 9am-2:30pm 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

IRKTIST
12am (midnight)9:30 pm
1am10:30 pm
2am11:30 pm
3am12:30 am
4am1:30 am
5am2:30 am
6am3:30 am
7am4:30 am
8am5:30 am
9am6:30 am
10am7:30 am
11am8:30 am
12pm (noon)9:30 am
1pm10:30 am
2pm11:30 am
3pm12:30 pm
4pm1:30 pm
5pm2:30 pm
6pm3:30 pm
7pm4:30 pm
8pm5:30 pm
9pm6:30 pm
10pm7:30 pm
11pm8:30 pm
00:0021:30
01:0022:30
02:0023:30
03:0000:30
04:0001:30
05:0002:30
06:0003:30
07:0004:30
08:0005:30
09:0006:30
10:0007:30
11:0008:30
12:0009:30
13:0010:30
14:0011:30
15:0012:30
16:0013:30
17:0014:30
18:0015:30
19:0016:30
20:0017:30
21:0018:30
22:0019:30
23:0020:30

Irkutsk Summer Time

Offset: IRKST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

IRKST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for IRKST
  • I - short form of 'India'
Time zones with the GMT +9 offset:
  • 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

India Standard Time

Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

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, Bangalore, Kolkata, Chennai.

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.

IST Time Zone Geo Map
IST timezone map

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