Seoul to Sumter time converter

Sumter is 13 hours behind Seoul. When it is 9:00 AM in Seoul, it is 8:00 PM (Sun, Oct 18) in Sumter.

Seoul KST

Monday, October 19, 2026

Sumter EDT

Sunday, October 18, 2026

Seoul
South Korea
Mon, Oct 19
KSTUTC+9
Sumter
South Carolina, United States
Sun, Oct 18
EDTUTC-4-13h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Sumter conversion table

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

SeoulSumter
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 Sumter): 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 Sumter switch clocks on different dates:

  • Oct 19, 2026 – Nov 1, 2026: -13h
  • Nov 1, 2026 – Mar 14, 2027: -14h
  • Mar 14, 2027 – Oct 19, 2027: -13h

Distance

Seoul and Sumter are 11,579 km (7,195 miles) apart in a straight line.

More conversions

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New York to SumterLondon to SumterLos Angeles to SumterChicago to SumterToronto to SumterSão Paulo to SumterParis to SumterBerlin to SumterMoscow to SumterDubai to SumterNew Delhi to SumterBangkok to Sumter

Questions and answers

What is the time difference between Seoul and Sumter?

Sumter is 13 hours behind Seoul.

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

When it is 9:00 AM in Seoul, it is 8:00 PM (Sun, Oct 18) in Sumter.

When is the best time to call Sumter 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 Sumter): working hours on one side, early or late on the other.

Does the time difference between Seoul and Sumter change?

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