Time difference between Chicago and Seoul
Compare the current local time in Chicago and Seoul, see when your working hours overlap, and convert any specific hour between the two timezones.
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Convert a specific time
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Working-hours overlap
When Chicago's 9:00–17:00 business hours overlap with Seoul's.
Chicago working hours
Seoul working hours
Overlap (both working)
🇺🇸 Chicago
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🇰🇷 Seoul
Scheduling across Chicago and Seoul
Scheduling between Chicago and Seoul is hard. Their standard business hours do not overlap on the same day, with the smallest gap running 2 hours between Chicago closing at 17:00 local and Seoul opening at 09:00 local. Practical bridging slots: an early Seoul start at 07:00 (catching Chicago just at close, 17:00), or a late Chicago call at 19:00 (catching Seoul at opening, 09:00).
Quick reference
| 🇺🇸 Chicago | 🇰🇷 Seoul | In Seoul it's… |
|---|---|---|
| 06:00 — Early morning | — | — |
| 09:00 — Start of work | — | — |
| 12:00 — Lunchtime | — | — |
| 15:00 — Mid-afternoon | — | — |
| 17:00 — End of work | — | — |
| 20:00 — Evening | — | — |
Daylight saving status
🇺🇸 Chicago
Currently in CDT (daylight saving)
Clocks go back to CST
on Sunday 1 November 2026
🇰🇷 Seoul
Seoul does not observe daylight saving time. The local offset is fixed year-round.