Ansan to Chicago Time Difference
Chicago is 14 hours behind Ansan. When it is noon in Ansan, it is 22:00 in Chicago.
Seoul (UTC+9) → Chicago (UTC-5)
🕐 Interactive Time Explorer
When it's 21:00 in Ansan, it's 07:00 in Chicago
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Ansan & Chicago◐ Extended Hours (3 hours)
✈️ Travel Information
Distance
10,540 km
Est. Flight Time
~13.4h
Time Difference
-14h
Work Hours Overlap
0h
None
🔴 Office Closed
No overlap available
No overlap
⏰ Quick Conversion
06:00
Ansan
16:00
Chicago (-1)
09:00
Ansan
19:00
Chicago (-1)
12:00
Ansan
22:00
Chicago (-1)
15:00
Ansan
01:00
Chicago
18:00
Ansan
04:00
Chicago
21:00
Ansan
07:00
Chicago
00:00
Ansan
10:00
Chicago (-1)
03:00
Ansan
13:00
Chicago (-1)
Frequently Asked Questions
How many hours is Ansan ahead of Chicago?
Chicago is 14 hours behind Ansan. When it is 12:00 noon in Ansan, it is 22:00 in Chicago. Ansan operates on Asia/Seoul (UTC+9), while Chicago uses America/Chicago (UTC-5).
What is the best time to call Chicago from Ansan?
Standard business hours (9 AM–5 PM) do not overlap between Ansan and Chicago due to the 14 hours difference. Consider early morning or late evening calls, or use async communication.
Does the Ansan to Chicago time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between Ansan and Chicago
The distance between Ansan and Chicago is approximately 10,540 km. A direct flight typically takes around 13.4 hours. Your arrival clock will show local Chicago time — use our Flight Time Calculator to predict exact arrival times.