Chicago to Koesan time converter

Koesan is 14 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 11:00 PM in Koesan.

Chicago CDT

Sunday, October 18, 2026

Koesan KST

Monday, October 19, 2026

Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5
Koesan
South Korea
Mon, Oct 19
KSTUTC+9+14h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Koesan conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 5:00 PM – 6:00 PM in Chicago (7:00 AM – 8:00 AM in Koesan): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Chicago and Koesan switch clocks on different dates:

  • Oct 18, 2026 – Nov 1, 2026: +14h
  • Nov 1, 2026 – Mar 14, 2027: +15h
  • Mar 14, 2027 – Oct 18, 2027: +14h

Distance

Chicago and Koesan are 10,557 km (6,560 miles) apart in a straight line.

More conversions

Koesan to ChicagoChicago to New YorkChicago to LondonChicago to Los AngelesChicago to TorontoChicago to São PauloChicago to ParisChicago to BerlinChicago to MoscowChicago to DubaiChicago to New DelhiChicago to BangkokChicago to Singapore
New York to KoesanLondon to KoesanLos Angeles to KoesanToronto to KoesanSão Paulo to KoesanParis to KoesanBerlin to KoesanMoscow to KoesanDubai to KoesanNew Delhi to KoesanBangkok to KoesanSingapore to Koesan

Questions and answers

What is the time difference between Chicago and Koesan?

Koesan is 14 hours ahead of Chicago.

What time is it in Koesan when it is 9 AM in Chicago?

When it is 9:00 AM in Chicago, it is 11:00 PM in Koesan.

When is the best time to call Koesan from Chicago?

Working hours don't overlap fully. The closest fit is 5:00 PM – 6:00 PM in Chicago (7:00 AM – 8:00 AM in Koesan): working hours on one side, early or late on the other.

Does the time difference between Chicago and Koesan change?

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