Sumter to Seoul time converter

Seoul is 13 hours ahead of Sumter. When it is 9:00 AM in Sumter, it is 10:00 PM in Seoul.

Sumter EDT

Sunday, October 18, 2026

Seoul KST

Monday, October 19, 2026

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

Sumter to Seoul conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 18, 2026 – Nov 1, 2026: +13h
  • Nov 1, 2026 – Mar 14, 2027: +14h
  • Mar 14, 2027 – Oct 18, 2027: +13h

Distance

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

More conversions

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Questions and answers

What is the time difference between Sumter and Seoul?

Seoul is 13 hours ahead of Sumter.

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

When it is 9:00 AM in Sumter, it is 10:00 PM in Seoul.

When is the best time to call Seoul from Sumter?

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

Does the time difference between Sumter and Seoul change?

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