Timetate
A world clock on a live 3D globe. Put Seoul and Chicago on it side by side.
🇰🇷 Seoul (UTC+9) · 🇺🇸 Chicago (UTC−5) · 14 hours difference — Seoul is ahead
Best Time to Meet
No standard business-hours overlap. Extended window: 09:00–09:00 in SeoulAt least one city will be in early morning or evening hours.
24-Hour Schedule
| City | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 🇰🇷 Seoul | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 |
| 🇺🇸 Chicago | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 |
Quick Reference
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Open Meeting Planner →Seoul is a electronics city and Chicago a finance and derivatives city; the two economies buy from each other rather than compete. Seoul runs 14 hours ahead of Chicago, far enough that the morning in one is already the next day in the other.
Both cities work Monday to Friday, Seoul typically 09:00–18:00 and Chicago 08:30–17:30 local time.
There is no hour when both offices are open, only the edges: an early start in Chicago meets a late finish in Seoul. Alternate who stretches, and keep those calls short. Only Chicago changes its clocks, so the gap shifts by an hour twice a year while Seoul stays put.
Seoul is 14 hours ahead of Chicago. The gap changes by an hour around the clock changes.
There is no hour when both offices are open. The closest is early morning in Chicago against the end of the day in Seoul; alternate which side takes the awkward slot.
Alternate. A standing call that is always 07:00 for Chicago or always 19:00 for Seoul is resented within a month; rotating it keeps both sides in the room.
Not always. At 09:00 in Chicago it is already the next calendar day in Seoul, so every invitation should carry the date in both cities.
Explore city time zones
Times on this page were calculated on .