Seoul to Kosai time converter

Seoul and Kosai are on the same time. When it is 9:00 AM in Seoul, it is 9:00 AM in Kosai.

Seoul KST

Tuesday, October 20, 2026

Kosai JST

Tuesday, October 20, 2026

Seoul
South Korea
Tue, Oct 20
KSTUTC+9
Kosai
Japan
Tue, Oct 20
JSTUTC+9±0
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Kosai conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 6:00 PM in Seoul (9:00 AM – 6:00 PM in Kosai).

Daylight saving time and the difference

The difference stays 0 hours all year.

Distance

Seoul and Kosai are 998 km (620 miles) apart in a straight line.

More conversions

Kosai to SeoulSeoul to New YorkSeoul to LondonSeoul to Los AngelesSeoul to ChicagoSeoul to TorontoSeoul to São PauloSeoul to ParisSeoul to BerlinSeoul to MoscowSeoul to DubaiSeoul to New DelhiSeoul to Bangkok
New York to KosaiLondon to KosaiLos Angeles to KosaiChicago to KosaiToronto to KosaiSão Paulo to KosaiParis to KosaiBerlin to KosaiMoscow to KosaiDubai to KosaiNew Delhi to KosaiBangkok to Kosai

Questions and answers

What is the time difference between Seoul and Kosai?

Seoul and Kosai are on the same time.

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

When it is 9:00 AM in Seoul, it is 9:00 AM in Kosai.

When is the best time to call Kosai from Seoul?

Both sides are at work from 9:00 AM – 6:00 PM in Seoul (9:00 AM – 6:00 PM in Kosai).

Does the time difference between Seoul and Kosai change?

No. The difference stays 0 hours all year.