What time zone is Seoul in?
Seoul uses the IANA time zone Asia/Seoul. Its current offset is UTC+9.
World / South Korea / Seoul
Current time in
Seoul
16:5140
Sunday, 18 October 2026GMT+9 · UTC+9
Useful context
Understanding Seoul time
When is a good time to call?
Aim for 09:00–17:00 in Seoul. Open a converter above to see how that working window lands in another city.
Does Seoul change its clocks?
Seoul keeps the same UTC+9 offset in January and July, so its clock is generally stable through the year.
Seoul uses Korea Standard Time
Seoul uses Asia/Seoul, commonly called Korea Standard Time. South Korea keeps this UTC+9 civil clock throughout the year, making the city a useful reference for calls across East Asia.
Why named zones matter in calendars →