Chicago to Ko Samui time converter

Ko Samui is 12 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 9:00 PM in Ko Samui.

Chicago CDT

Saturday, October 17, 2026

Ko Samui ICT

Sunday, October 18, 2026

Chicago
Illinois, United States
Sat, Oct 17
CDTUTC-5
Ko Samui
Thailand
Sun, Oct 18
ICTUTC+7+12h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Ko Samui conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 10:00 AM in Chicago (9:00 PM – 10:00 PM in Ko Samui): 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 Ko Samui switch clocks on different dates:

  • Oct 17, 2026 – Nov 1, 2026: +12h
  • Nov 1, 2026 – Mar 14, 2027: +13h
  • Mar 14, 2027 – Oct 17, 2027: +12h

Distance

Chicago and Ko Samui are 14,249 km (8,854 miles) apart in a straight line.

More conversions

Ko Samui 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 Ko SamuiLondon to Ko SamuiLos Angeles to Ko SamuiToronto to Ko SamuiSão Paulo to Ko SamuiParis to Ko SamuiBerlin to Ko SamuiMoscow to Ko SamuiDubai to Ko SamuiNew Delhi to Ko SamuiBangkok to Ko SamuiSingapore to Ko Samui

Questions and answers

What is the time difference between Chicago and Ko Samui?

Ko Samui is 12 hours ahead of Chicago.

What time is it in Ko Samui when it is 9 AM in Chicago?

When it is 9:00 AM in Chicago, it is 9:00 PM in Ko Samui.

When is the best time to call Ko Samui from Chicago?

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

Does the time difference between Chicago and Ko Samui change?

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