Chicago to Seoul time difference
Live time in both cities, a conversion table and the best hours to call.
Seoul is 14 hours ahead of Chicago right now. It is 15 hours ahead in January and 14 hours ahead in July. When it is 9:00 AM in Chicago, it is 12:00 AM (winter) or 11:00 PM (summer) in Seoul.
Today, hour by hour
| Chicago | Seoul |
|---|
Green rows are inside 9 AM–5 PM in both places.
Chicago to Seoul time table
| Chicago | Seoul (January) | Seoul (July) |
|---|---|---|
| 12:00 AM | 3:00 PM | 2:00 PM |
| 1:00 AM | 4:00 PM | 3:00 PM |
| 2:00 AM | 5:00 PM | 4:00 PM |
| 3:00 AM | 6:00 PM | 5:00 PM |
| 4:00 AM | 7:00 PM | 6:00 PM |
| 5:00 AM | 8:00 PM | 7:00 PM |
| 6:00 AM | 9:00 PM | 8:00 PM |
| 7:00 AM | 10:00 PM | 9:00 PM |
| 8:00 AM | 11:00 PM | 10:00 PM |
| 9:00 AM | 12:00 AM (+1 day) | 11:00 PM |
| 10:00 AM | 1:00 AM (+1 day) | 12:00 AM (+1 day) |
| 11:00 AM | 2:00 AM (+1 day) | 1:00 AM (+1 day) |
| 12:00 PM | 3:00 AM (+1 day) | 2:00 AM (+1 day) |
| 1:00 PM | 4:00 AM (+1 day) | 3:00 AM (+1 day) |
| 2:00 PM | 5:00 AM (+1 day) | 4:00 AM (+1 day) |
| 3:00 PM | 6:00 AM (+1 day) | 5:00 AM (+1 day) |
| 4:00 PM | 7:00 AM (+1 day) | 6:00 AM (+1 day) |
| 5:00 PM | 8:00 AM (+1 day) | 7:00 AM (+1 day) |
| 6:00 PM | 9:00 AM (+1 day) | 8:00 AM (+1 day) |
| 7:00 PM | 10:00 AM (+1 day) | 9:00 AM (+1 day) |
| 8:00 PM | 11:00 AM (+1 day) | 10:00 AM (+1 day) |
| 9:00 PM | 12:00 PM (+1 day) | 11:00 AM (+1 day) |
| 10:00 PM | 1:00 PM (+1 day) | 12:00 PM (+1 day) |
| 11:00 PM | 2:00 PM (+1 day) | 1:00 PM (+1 day) |
When the difference changes
| Dates | Difference |
|---|---|
| Oct 9, 2026 – Oct 31, 2026 | Seoul is 14 hours ahead of Chicago |
| Nov 1, 2026 – Mar 13, 2027 | Seoul is 15 hours ahead of Chicago |
| Mar 14, 2027 – Nov 6, 2027 | Seoul is 14 hours ahead of Chicago |
| Nov 7, 2027 – Dec 31, 2027 | Seoul is 15 hours ahead of Chicago |
Chicago uses daylight saving time. Next clock changes: Nov 1, 2026 (to UTC-6), Mar 14, 2027 (to UTC-5). Seoul does not use daylight saving time. It stays at UTC+9 all year.
Best time to call Seoul, South Korea from Chicago
- January: no shared 9-to-5 hours. Workable window (7 AM–10 PM for both): 4:00 PM–10:00 PM in Chicago (7:00 AM–1:00 PM in Seoul).
- July: no shared 9-to-5 hours. Workable window (7 AM–10 PM for both): 7:00 AM–8:00 AM in Chicago (9:00 PM–10:00 PM in Seoul); 5:00 PM–10:00 PM in Chicago (7:00 AM–12:00 PM in Seoul).
Seoul vs other US time zones
| US city | January | July |
|---|---|---|
| New York | 14 hours ahead | 13 hours ahead |
| Chicago | 15 hours ahead | 14 hours ahead |
| Denver | 16 hours ahead | 15 hours ahead |
| Phoenix | 16 hours ahead | 16 hours ahead |
| Los Angeles | 17 hours ahead | 16 hours ahead |
Convert a different date with the time zone converter, or plan a call with the meeting planner.
Frequently asked questions
What is the time difference between Chicago and Seoul?
Seoul is 15 hours ahead of Chicago in January and 14 hours ahead in July.
If it is 8 PM in Chicago, what time is it in Seoul?
11:00 AM in winter and 10:00 AM in summer.
Does Seoul use daylight saving time?
Seoul does not use daylight saving time. It stays at UTC+9 all year.