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KST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
KST at UTC+8:30 is not used on this date
This converter keeps KST at UTC+8:30. Pyongyang uses KST (UTC+9) on this date. Choose Pyongyang, Hamhung, or Nampo for city-specific time.
IRKT/IRKST
UTC+8
30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IRKST is not used on this date.

This converter uses IRKT (UTC+8), as in Irkutsk.

Quick answers

Selected conversion

8:30 pm20:30 KST (UTC+8:30), Nov 9, 2026 = 8:00 pm20:00 IRKT (UTC+8), Nov 9, 2026

KST is 30 minutes ahead of IRKT.

KST and IRKST examples

These examples always use KST (UTC+8:30) and IRKST (UTC+9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

KST is 30 minutes behind IRKST.

How the time difference changes

KST Pyongyang is 30 minutes ahead of IRKT year-round.

Working hours of 9:00 am to 6:00 pm in KST Pyongyang correspond to 8:30 am to 5:30 pm in IRKT.Working hours of 09:00 to 18:00 in KST Pyongyang correspond to 08:30 to 17:30 in IRKT.

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

Time Difference

Pyongyang Time is 30 minutes ahead of Irkutsk Time.
8:30 pm20:30 in KST is 8:00 pm20:00 in IRKT

KST to IRKT call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in KST which corresponds to 9am-5:30pm09:00-17:30 in IRKT.

8:30 pm20:30 Pyongyang Time (KST). Offset UTC +8:30 hours
8:00 pm20:00 Irkutsk Time (IRKT). Offset UTC +8:00 hours

8:30 pm20:30 KST / 8:00 pm20:00 IRKT

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
KSTIRKT
11:30pm previous day
12:30am
1:30am
2:30am
3:30am
4:30am
5:30am
6:30am
7:30am
8:30am
9:30am
10:30am
11:30am
12:30pm
1:30pm
2:30pm
3:30pm
4:30pm
5:30pm
6:30pm
7:30pm
8:30pm
9:30pm
10:30pm
23:30 previous day
00:30
01:30
02:30
03:30
04:30
05:30
06:30
07:30
08:30
09:30
10:30
11:30
12:30
13:30
14:30
15:30
16:30
17:30
18:30
19:30
20:30
21:30
22:30

Pyongyang Time

Offset: KST is 8 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

KST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0830 - basic
  • +08:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0830 - sign character (+) followed by a four digit time providing hours (08) and minutes (30) of the offset. Indicates an offset of eight hours and thirty minutes to the east of the zero meridian.
KST Abbreviation: Several time zones share KST abbreviation and it could refer to these time zones
  • Korea Standard Time - UTC +9
  • Pyongyang Time - UTC +8:30

Irkutsk Summer Time

Offset: IRKST is 9 hours ahead of Greenwich Mean Time (GMT).

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