Time difference between Chicago and Sydney
Sydney is 15 hours ahead of Chicago
Right now
Chicago
11:38
CDT ·
UTC-5
Sydney
02:38
AEST ·
UTC+10
Best time for a call between Chicago and Sydney
Hours highlighted in green work for everyone on the list.
- 17:00 Chicago 08:00 Sydney
- 16:00 Chicago 07:00 Sydney
- 18:00 Chicago 09:00 Sydney
Hour by hour: Chicago to Sydney
Working hours are shaded. The rows marked with a star are the ones we recommend for a call.
| Chicago (reference) | Sydney | |
|---|---|---|
| 00:00 | 15:00 | |
| 01:00 | 16:00 | |
| 02:00 | 17:00 | |
| 03:00 | 18:00 | |
| 04:00 | 19:00 | |
| 05:00 | 20:00 | |
| 06:00 | 21:00 | |
| 07:00 | 22:00 | |
| 08:00 | 23:00 | |
| 09:00 | 00:00 (next day) | |
| 10:00 | 01:00 (next day) | |
| 11:00 | 02:00 (next day) | |
| 12:00 | 03:00 (next day) | |
| 13:00 | 04:00 (next day) | |
| 14:00 | 05:00 (next day) | |
| 15:00 | 06:00 (next day) | |
| ★ | 16:00 | 07:00 (next day) |
| ★ | 17:00 | 08:00 (next day) |
| ★ | 18:00 | 09:00 (next day) |
| 19:00 | 10:00 (next day) | |
| 20:00 | 11:00 (next day) | |
| 21:00 | 12:00 (next day) | |
| 22:00 | 13:00 (next day) | |
| 23:00 | 14:00 (next day) |
Table built for August 26, 2026. The live values above update in your browser.
Daylight saving time
Both cities change their clocks, but not always on the same date — the difference between them shifts for a few weeks each year.
Frequently asked questions
What is the time difference between Chicago and Sydney?
Sydney is 15 hours ahead of Chicago
What is the best time to call between Chicago and Sydney?
The most convenient slot is 17:00 Chicago / 08:00 Sydney. That keeps the call inside working hours in both cities.
Does the difference between Chicago and Sydney change during the year?
Both cities change their clocks, but not always on the same date — the difference between them shifts for a few weeks each year.