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This converter keeps KDT at UTC+10. Seoul uses KST (UTC+9) on this date. Open the KST converter, or choose Seoul, Busan, or Pyongyang for city-specific time.

Quick answers

Selected conversion

12:00 pm12:00 UTC (UTC+0), Oct 13, 2026 = 10:00 pm22:00 KDT (UTC+10), Oct 13, 2026

UTC is 10 hours behind KDT.

UTC and KDT examples

These examples always use UTC (UTC+0) and KDT (UTC+10). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

UTC is 10 hours behind KDT.

How the time difference changes

UTC is 10 hours behind KDT year-round.

Working hours of 9:00 am to 5:00 pm in UTC correspond to 7:00 pm to 3:00 am (next day) in KDT.Working hours of 09:00 to 17:00 in UTC correspond to 19:00 to 03:00 (next day) in KDT.

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

Time Difference

Coordinated Universal Time is 10 hours behind Korea Daylight Time.
12:00 pm12:00 in UTC is 10:00 pm22:00 in KDT

UTC to KDT call time
Best time for a conference call or a meeting is between 7:30am-8:30am07:30-08:30 in UTC which corresponds to 5:30pm-6:30pm17:30-18:30 in KDT. Their 9am–5pm09:00–17:00 working hours do not overlap; this is a suggested compromise.

12:00 pm12:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours
10:00 pm22:00 Korea Daylight Time (KDT). Offset UTC +10:00 hours

12:00 pm12:00 UTC / 10:00 pm22:00 KDT

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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Coordinated Universal Time

Offset: UTC is the same as Greenwich Mean Time (GMT).

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is the successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but UTC is the standard the scientific community uses.
UTC has been the time standard commonly used across the world since 1972. It is used in many technical fields, such as aviation and meteorology, and to synchronize time across internet networks.

Map of the areas on Coordinated Universal Time (UTC)
UTC all year UTC part of the year

Today some of the lighter areas are on UTC+1 (British Summer Time, Irish Standard Time, WEST).

UTC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Korea Daylight Time

Offset: KDT is 10 hours ahead of Greenwich Mean Time (GMT).

KDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +10 - basic short
  • +1000 - basic
  • +10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Kilo - Military abbreviation for KDT
  • K - short form of 'Kilo'
Time zones with the GMT +10 offset:
  • AEST - Australian Eastern Standard Time
  • CHUT - Chuuk Time
  • ChST - Chamorro Standard Time
  • K - Kilo Time Zone
  • KDT - Korea Daylight Time
  • PGT - Papua New Guinea Time
  • VLAT - Vladivostok Time
  • YAKST - Yakutsk Summer Time
  • YAPT - Yap Time