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IDT/IST
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IST is not used on this date.

This converter uses IDT (UTC+3), as in Jerusalem.

KST
UTC+9
6h ahead
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Quick answers

Selected conversion

3:00 pm15:00 IDT (UTC+3), Oct 18, 2026 = 9:00 pm21:00 KST (UTC+9), Oct 18, 2026

IDT is 6 hours behind KST.

IST and KST examples

These examples always use IST (UTC+2) and KST (UTC+9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IST is 7 hours behind KST.

How the time difference changes

For most of the year, IDT Israel is 6 hours behind KST. From Oct 25, 2026 to Mar 26, 2027, IST Israel is 7 hours behind KST.

For most of the year, working hours of 9:00 am to 6:00 pm in IDT Israel correspond to 3:00 pm to 12:00 am (next day) in KST. At other times of the year, working hours of 9:00 am to 6:00 pm in IST Israel correspond to 4:00 pm to 1:00 am (next day) in KST.For most of the year, working hours of 09:00 to 18:00 in IDT Israel correspond to 15:00 to 00:00 (next day) in KST. At other times of the year, working hours of 09:00 to 18:00 in IST Israel correspond to 16:00 to 01:00 (next day) in KST.

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

Time Difference

Israel Daylight Time is 6 hours behind Korea Standard Time.
3:00 pm15:00 in IDT is 9:00 pm21:00 in KST

IDT to KST call time
Best time for a conference call or a meeting is between 9am-12pm09:00-12:00 in IDT which corresponds to 3pm-6pm15:00-18:00 in KST

3:00 pm15:00 Israel Daylight Time (IDT). Offset UTC +3:00 hours
9:00 pm21:00 Korea Standard Time (KST). Offset UTC +9:00 hours

3:00 pm15:00 IDT / 9:00 pm21:00 KST

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
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Israel Standard Time

Offset: IST is 2 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Israel

Principal Cities: The largest city in the IST time zone is Jerusalem in Israel, with about 971,800 people. Other major cities in this time zone include Tel Aviv, Haifa, Rishon LeTsiyyon, Petaẖ Tiqva.

Map of the areas on Israel Standard Time (IST)
IST part of the year

Today the shaded areas are on UTC+3 (IDT).

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Israel Daylight Time (IDT).

123456789101112End: Israel Standard Time (IST) ended on Friday, March 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Friday, March 27, 2026, 3:00 am03:00 local daylight time instead.

123456789101112Start: Israel Standard Time (IST) starts on Sunday, October 25, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 1:00 am01:00. Standard time starts annually on the last Sunday of October.

See Israel daylight saving time and upcoming clock changes worldwide.

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +02 - basic short
  • +0200 - basic
  • +02:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates an offset of two hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Bravo - Military abbreviation for IST
  • B - short form of 'Bravo'
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jerusalem
  • Asia/Tel_Aviv
  • Israel
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
Time zones with the GMT +2 offset:
  • CEST - Central European Summer Time
  • EET - Eastern European Time
  • MESZ - Mitteleuropäische Sommerzeit
  • B - Bravo Time Zone
  • CAT - Central Africa Time
  • IST - Israel Standard Time
  • SAST - South Africa Standard Time
  • WAST - West Africa Summer Time

Korea Standard Time

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

Countries using this time zone: North Korea, South Korea

Principal Cities: The largest city in the KST time zone is Seoul in South Korea, with about 10.349 million people. Other major cities in this time zone include Busan, Pyongyang, Incheon, Daegu.

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

KST 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 KST
  • I - short form of 'India'
IANA/Olson: Reflects KST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Pyongyang
  • Asia/Seoul
  • ROK
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
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