Johnston to Seoul time converter

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

Johnston EDT

Tuesday, October 20, 2026

Seoul KST

Tuesday, October 20, 2026

Johnston
Rhode Island, United States
Tue, Oct 20
EDTUTC-4
Seoul
South Korea
Tue, Oct 20
KSTUTC+9+13h
Finding your time zone…
Shared working hours (9:00–18:00)

Johnston to Seoul conversion table

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

JohnstonSeoul
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 Johnston (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 Johnston and Seoul switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: +13h
  • Nov 1, 2026 – Mar 14, 2027: +14h
  • Mar 14, 2027 – Oct 20, 2027: +13h

Distance

Johnston and Seoul are 10,991 km (6,829 miles) apart in a straight line.

More conversions

Seoul to JohnstonJohnston to New YorkJohnston to LondonJohnston to Los AngelesJohnston to ChicagoJohnston to TorontoJohnston to São PauloJohnston to ParisJohnston to BerlinJohnston to MoscowJohnston to DubaiJohnston to New DelhiJohnston to Bangkok
New York to SeoulLondon to SeoulLos Angeles to SeoulChicago to SeoulToronto to SeoulSão Paulo to SeoulParis to SeoulBerlin to SeoulMoscow to SeoulDubai to SeoulNew Delhi to SeoulBangkok to Seoul

Questions and answers

What is the time difference between Johnston and Seoul?

Seoul is 13 hours ahead of Johnston.

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

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

When is the best time to call Seoul from Johnston?

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

Does the time difference between Johnston 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.