Chicago to Seoul time
Seoul is 15 hours ahead of Chicago.
Time difference between Chicago and Seoul
Seoul is 15 hours ahead of Chicago. Chicago is on Central Standard Time (CST (UTC−06:00)) and Seoul is on Korean Standard Time (UTC+09:00).
The gap is not constant. Because of daylight saving it varies from 14 hours to 15 hours over the year.
Convert Chicago time to Seoul time
These examples use the current offsets, UTC−06:00 for Chicago and UTC+09:00 for Seoul. Use the converter above for any other time or date.
Seoul is ahead, so from 9:00 AM to midnight in Chicago it is already the next calendar day in Seoul.
| Chicago time | Seoul time |
|---|---|
| 6:00 AM | 9:00 PM |
| 9:00 AM | 12:00 AM (next day) |
| 12:00 PM | 3:00 AM (next day) |
| 3:00 PM | 6:00 AM (next day) |
| 6:00 PM | 9:00 AM (next day) |
| 9:00 PM | 12:00 PM (next day) |
Best time to call or meet: Chicago and Seoul working hours
The standard 9:00 AM to 5:00 PM working days in Chicago and Seoul do not overlap.
Between 8:00 AM and 8:00 PM, both cities are awake from 5:00 PM to 8:00 PM in Chicago (8:00 AM to 11:00 AM in Seoul), which usually means an early start or a late finish for one side.
Weekends, public holidays and local working weeks differ by country, so check those before booking.
Daylight saving time in Chicago and Seoul
Chicago observes daylight saving time. Its next change is on Mar 14, 2027 at 2:00 AM, when clocks go forward 1 hour (UTC−06:00 to UTC−05:00).
Seoul does not change its clocks for daylight saving, so its UTC offset stays the same all year.