Live Synchronized Time Difference
ChicagotoSeoulTime Difference
🇺🇸
Chicago
United States (CDT)10:10:20UTC-5:00
🇰🇷
Seoul
South Korea (GMT+9)00:10:20UTC+9:00
Direct Distance10,510 km (6,531 miles)
Estimated Flight Time~12.9 hours
Business Overlap0 overlapping hours (9am–5pm)
Feasible Shoulder Hours Window
Recommended calling window between Chicago and Seoul
Off-Peak Calling Window
Chicago Time
5:00 PM – 9:00 PM
Seoul Time
7:00 AM – 11:00 AM
There are no overlapping 9-to-5 working hours between Chicago and Seoul. The optimal compromise window falls during morning/evening shoulder periods (7:00 AM – 9:00 PM) when participants in both locations are awake.
24-Hour Schedule Conversion Matrix
Compare every hour of the day between Chicago and Seoul.
Work (9am-5pm)ShoulderSleep / Off
| Chicago Time (United States) | Seoul Time (South Korea) | Status & Recommendation |
|---|---|---|
| 00:00AM | 14:00PM | ⚪ Outside Work Hours |
| 01:00AM | 15:00PM | ⚪ Outside Work Hours |
| 02:00AM | 16:00PM | ⚪ Outside Work Hours |
| 03:00AM | 17:00PM | ⚪ Outside Work Hours |
| 04:00AM | 18:00PM | ⚪ Outside Work Hours |
| 05:00AM | 19:00PM | ⚪ Outside Work Hours |
| 06:00AM | 20:00PM | ⚪ Outside Work Hours |
| 07:00AM | 21:00PM | ⚪ Outside Work Hours |
| 08:00AM | 22:00PM | ⚪ Outside Work Hours |
| 09:00AM | 23:00PM | ⚪ Outside Work Hours |
| 10:00AM | 00:00AM | ⚪ Outside Work Hours |
| 11:00AM | 01:00AM | ⚪ Outside Work Hours |
| 12:00PM | 02:00AM | ⚪ Outside Work Hours |
| 13:00PM | 03:00AM | ⚪ Outside Work Hours |
| 14:00PM | 04:00AM | ⚪ Outside Work Hours |
| 15:00PM | 05:00AM | ⚪ Outside Work Hours |
| 16:00PM | 06:00AM | ⚪ Outside Work Hours |
| 17:00PM | 07:00AM | ⚪ Outside Work Hours |
| 18:00PM | 08:00AM | ⚪ Outside Work Hours |
| 19:00PM | 09:00AM | ⚪ Outside Work Hours |
| 20:00PM | 10:00AM | ⚪ Outside Work Hours |
| 21:00PM | 11:00AM | ⚪ Outside Work Hours |
| 22:00PM | 12:00PM | ⚪ Outside Work Hours |
| 23:00PM | 13:00PM | ⚪ Outside Work Hours |
Frequently Asked Questions
What is the time difference between Chicago and Seoul?
Seoul is 14 hours ahead of Chicago.
What is the best time to schedule a cross-border meeting between Chicago and Seoul?
Because of the wide timezone separation, a compromise meeting window during early morning in one location and evening in the other is recommended.
Does daylight saving time (DST) affect the time difference between Chicago and Seoul?
Yes. If either United States or South Korea observes seasonal Daylight Saving Time transitions, the offset difference shifts by one hour on scheduled transition dates.