South Korea is 14 hours ahead of Chicago. When South Korea clocks hit noon, Chicago reads 22:00.
South Korea runs on Asia/Seoul; Chicago runs on America/Chicago. Together they are 14 hours apart.
Daily overlap window
There is no business hours overlap between South Korea and Chicago during standard working hours (9:00–17:00). Meetings would require one party to work outside normal hours.
Best times to schedule a meeting
South Korea and Chicago have no shared working window. These slots minimize out-of-hours disruption for both sides.
06:00 Seoul / 16:00 Chicago⚡ One side off-hours
⚠️ 3h before working hours in Seoul
09:00 Seoul / 19:00 Chicago⚡ One side off-hours
⚠️ 3h after working hours in Chicago
05:00 Seoul / 15:00 Chicago⚡ One side off-hours
⚠️ 4h before working hours in Seoul
Working hours defined as 09:00–17:00 local time for each location.
Holiday calendar for both locations
⚡ Both locations have upcoming holidays, check availability before scheduling.
South Korea6 holidays
Sep 24Chuseok
Sep 25Chuseok
Sep 26Chuseok
Oct 3National Foundation Day
Oct 9Hangul Day
Chicago6 holidays
Sep 7Labour DaySOON
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans Day
Nov 26Thanksgiving Day
Working across South Korea and Chicago
Coordinating between South Korea (South Korea) and Chicago (USA) means working around a 14-hour time difference. Since standard business hours don't naturally overlap, meetings usually require one side to shift slightly outside their normal working day.
💡 Best practice for cross-timezone meetings
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A 06:00 meeting in South Korea means 16:00 in Chicago (3h before working hours in Seoul).
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A 09:00 meeting in South Korea means 19:00 in Chicago (3h after working hours in Chicago).
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A 05:00 meeting in South Korea means 15:00 in Chicago (4h before working hours in Seoul).
Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.
Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.
Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am South Korea".
