Seoul to Chelsea time converter

Chelsea is 13 hours behind Seoul. When it is 9:00 AM in Seoul, it is 8:00 PM (Tue, Oct 20) in Chelsea.

Seoul KST

Wednesday, October 21, 2026

Chelsea EDT

Wednesday, October 21, 2026

Seoul
South Korea
Wed, Oct 21
KSTUTC+9
Chelsea
Massachusetts, United States
Wed, Oct 21
EDTUTC-4-13h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Chelsea conversion table

Every hour of today in Seoul and the matching time in Chelsea. Light rows are typical working hours (9:00–18:00).

SeoulChelsea
12:00 AM11:00 AM−1 day
1:00 AM12:00 PM−1 day
2:00 AM1:00 PM−1 day
3:00 AM2:00 PM−1 day
4:00 AM3:00 PM−1 day
5:00 AM4:00 PM−1 day
6:00 AM5:00 PM−1 day
7:00 AM6:00 PM−1 day
8:00 AM7:00 PM−1 day
9:00 AM8:00 PM−1 day
10:00 AM9:00 PM−1 day
11:00 AM10:00 PM−1 day
12:00 PM11:00 PM−1 day
1:00 PM12:00 AM
2:00 PM1:00 AM
3:00 PM2:00 AM
4:00 PM3:00 AM
5:00 PM4:00 AM
6:00 PM5:00 AM
7:00 PM6:00 AM
8:00 PM7:00 AM
9:00 PM8:00 AM
10:00 PM9:00 AM
11:00 PM10:00 AM

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Seoul (8:00 PM – 10:00 PM in Chelsea): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Seoul and Chelsea switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: -13h
  • Nov 1, 2026 – Mar 14, 2027: -14h
  • Mar 14, 2027 – Oct 21, 2027: -13h

Distance

Seoul and Chelsea are 10,939 km (6,797 miles) apart in a straight line.

More conversions

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New York to ChelseaLondon to ChelseaLos Angeles to ChelseaChicago to ChelseaToronto to ChelseaSão Paulo to ChelseaParis to ChelseaBerlin to ChelseaMoscow to ChelseaDubai to ChelseaNew Delhi to ChelseaBangkok to Chelsea

Questions and answers

What is the time difference between Seoul and Chelsea?

Chelsea is 13 hours behind Seoul.

What time is it in Chelsea when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 8:00 PM (Tue, Oct 20) in Chelsea.

When is the best time to call Chelsea from Seoul?

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Seoul (8:00 PM – 10:00 PM in Chelsea): working hours on one side, early or late on the other.

Does the time difference between Seoul and Chelsea change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.