Costa Rica to South Korea time converter

South Korea is 15 hours ahead of Costa Rica. When it is 9:00 AM in Costa Rica, it is 12:00 AM (Thu, Oct 22) in South Korea.

Costa Rica CST

Wednesday, October 21, 2026

South Korea KST

Thursday, October 22, 2026

Costa Rica
Wed, Oct 21
CSTUTC-6
South Korea
Thu, Oct 22
KSTUTC+9+15h
Finding your time zone…
Shared working hours (9:00–18:00)

Costa Rica to South Korea conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Costa Rica (7:00 AM – 9:00 AM in South Korea): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference stays 15 hours all year.

More conversions

South Korea to Costa RicaCosta Rica to New YorkCosta Rica to LondonCosta Rica to Los AngelesCosta Rica to ChicagoCosta Rica to TorontoCosta Rica to São PauloCosta Rica to ParisCosta Rica to BerlinCosta Rica to MoscowCosta Rica to DubaiCosta Rica to New DelhiCosta Rica to Bangkok
New York to South KoreaLondon to South KoreaLos Angeles to South KoreaChicago to South KoreaToronto to South KoreaSão Paulo to South KoreaParis to South KoreaBerlin to South KoreaMoscow to South KoreaDubai to South KoreaNew Delhi to South KoreaBangkok to South Korea

Questions and answers

What is the time difference between Costa Rica and South Korea?

South Korea is 15 hours ahead of Costa Rica.

What time is it in South Korea when it is 9 AM in Costa Rica?

When it is 9:00 AM in Costa Rica, it is 12:00 AM (Thu, Oct 22) in South Korea.

When is the best time to call South Korea from Costa Rica?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Costa Rica (7:00 AM – 9:00 AM in South Korea): working hours on one side, early or late on the other.

Does the time difference between Costa Rica and South Korea change?

No. The difference stays 15 hours all year.