Sydney to Chicago Time Difference
Chicago is 15 hours behind Sydney. When it is noon in Sydney, it is 21:00 in Chicago.
Sydney (UTC+10) → Chicago (UTC-5)
🕐 Interactive Time Explorer
When it's 05:00 in Sydney, it's 14:00 in Chicago
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Sydney & Chicago◐ Extended Hours (5 hours)
✈️ Travel Information
Distance
14,876 km
Est. Flight Time
~18.5h
Time Difference
-15h
Work Hours Overlap
0h
None
🔴 Office Closed
No overlap available
No overlap
⏰ Quick Conversion
06:00
Sydney
15:00
Chicago (-1)
09:00
Sydney
18:00
Chicago (-1)
12:00
Sydney
21:00
Chicago (-1)
15:00
Sydney
00:00
Chicago
18:00
Sydney
03:00
Chicago
21:00
Sydney
06:00
Chicago
00:00
Sydney
09:00
Chicago (-1)
03:00
Sydney
12:00
Chicago (-1)
Frequently Asked Questions
How many hours is Sydney ahead of Chicago?
Chicago is 15 hours behind Sydney. When it is 12:00 noon in Sydney, it is 21:00 in Chicago. Sydney operates on Australia/Sydney (UTC+10), while Chicago uses America/Chicago (UTC-5).
What is the best time to call Chicago from Sydney?
Standard business hours (9 AM–5 PM) do not overlap between Sydney and Chicago due to the 15 hours difference. Consider early morning or late evening calls, or use async communication.
Does the Sydney 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 Sydney and Chicago
The distance between Sydney and Chicago is approximately 14,876 km. A direct flight typically takes around 18.5 hours. Your arrival clock will show local Chicago time — use our Flight Time Calculator to predict exact arrival times.