Korea Standard Time is UTC+09:00 year-round, the same offset as Japan Standard Time.
Detecting your timezone for a personal comparison…
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South Korea uses a single civil time, Asia/Seoul. Although KST and JST share an offset, they are separate IANA zones. North Korea has used a different offset in the past; this page follows South Korea’s current civil time.
The offset shown above is computed from Asia/Seoul at page render time using Intl.DateTimeFormat. It can change when daylight saving starts or ends.
South Korea does not currently observe daylight saving time.
Korea Standard Time (KST) uses the IANA identifier Asia/Seoul. Korea Standard Time is UTC+09:00 year-round, the same offset as Japan Standard Time.
Right now Korea Standard Time is UTC+09:00. The live abbreviation reported by the timezone database is GMT+9.
South Korea does not currently observe daylight saving time.
Use the converter with Asia/Seoul as the source zone, or open the Time Zone Converter and pick a city that uses KST. Offsets update automatically when daylight saving begins or ends.