TimeForge · time difference
Time difference between Chicago and Sydney
Sydney is 15 hours ahead of Chicago from April to October, and 17 hours from November to March, 16 hours from March to April, because the two cities change their clocks on different dates.
The two offsets
| City | Zone | 15 January | 15 July |
|---|---|---|---|
| Chicago · United States | America/Chicago | UTC-6 | UTC-5(DST) |
| Sydney · Australia | Australia/Sydney | UTC+11(DST) | UTC+10 |
When both are at work
Working hours taken as 9:00–18:00 in each city. The grid below uses the winter offsets. In summer the gap widens and no hour suits both.
| UTC | Chicago | Sydney | Verdict |
|---|---|---|---|
| 00:00 | 18:00 | 11:00 | edge of the day |
| 01:00 | 19:00 | 12:00 | someone is asleep |
| 02:00 | 20:00 | 13:00 | someone is asleep |
| 03:00 | 21:00 | 14:00 | someone is asleep |
| 04:00 | 22:00 | 15:00 | someone is asleep |
| 05:00 | 23:00 | 16:00 | someone is asleep |
| 06:00 | 00:00 | 17:00 | someone is asleep |
| 07:00 | 01:00 | 18:00 | someone is asleep |
| 08:00 | 02:00 | 19:00 | someone is asleep |
| 09:00 | 03:00 | 20:00 | someone is asleep |
| 10:00 | 04:00 | 21:00 | someone is asleep |
| 11:00 | 05:00 | 22:00 | someone is asleep |
| 12:00 | 06:00 | 23:00 | someone is asleep |
| 13:00 | 07:00 | 00:00 | someone is asleep |
| 14:00 | 08:00 | 01:00 | someone is asleep |
| 15:00 | 09:00 | 02:00 | someone is asleep |
| 16:00 | 10:00 | 03:00 | someone is asleep |
| 17:00 | 11:00 | 04:00 | someone is asleep |
| 18:00 | 12:00 | 05:00 | someone is asleep |
| 19:00 | 13:00 | 06:00 | someone is asleep |
| 20:00 | 14:00 | 07:00 | someone is asleep |
| 21:00 | 15:00 | 08:00 | edge of the day |
| 22:00 | 16:00 | 09:00 | both at work |
| 23:00 | 17:00 | 10:00 | both at work |
Best times to meet
- 22:00 UTC — Chicago 16:00, Sydney 09:00
- 23:00 UTC — Chicago 17:00, Sydney 10:00
- 00:00 UTC — Chicago 18:00, Sydney 11:00
- 21:00 UTC — Chicago 15:00, Sydney 08:00
Plan across more than two cities
Add any zones, set your own working hours, get the overlap grid and an .ics invite for the slot you pick.
Open TimeForge