South Korea to United States time converter

United States is 13 hours behind South Korea. When it is 9:00 AM in South Korea, it is 8:00 PM (Tue, Oct 20) in United States.

South Korea KST

Wednesday, October 21, 2026

United States EDT

Wednesday, October 21, 2026

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

South Korea to United States conversion table

Every hour of today in South Korea and the matching time in United States. Light rows are typical working hours (9:00–18:00).

South KoreaUnited States
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 South Korea (8:00 PM – 10:00 PM in United States): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because South Korea and United States 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

More conversions

United States to South KoreaSouth Korea to New YorkSouth Korea to LondonSouth Korea to Los AngelesSouth Korea to ChicagoSouth Korea to TorontoSouth Korea to São PauloSouth Korea to ParisSouth Korea to BerlinSouth Korea to MoscowSouth Korea to DubaiSouth Korea to New DelhiSouth Korea to Bangkok
New York to United StatesLondon to United StatesLos Angeles to United StatesChicago to United StatesToronto to United StatesSão Paulo to United StatesParis to United StatesBerlin to United StatesMoscow to United StatesDubai to United StatesNew Delhi to United StatesBangkok to United States

Questions and answers

What is the time difference between South Korea and United States?

United States is 13 hours behind South Korea.

What time is it in United States when it is 9 AM in South Korea?

When it is 9:00 AM in South Korea, it is 8:00 PM (Tue, Oct 20) in United States.

When is the best time to call United States from South Korea?

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

Does the time difference between South Korea and United States change?

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