Time difference between Chicago and Sydney
Sydney is 16 hours ahead of Chicago. When it's 9:00 in Chicago, it's 01:00 (next day) in Sydney.
Sydney is 16 hours ahead of Chicago.
On Tuesday, 6 October 2026, 09:00 in Chicago is 01:00 (next day) in Sydney. Chicago is UTC−5; Sydney is UTC+11.
The gap through 2026
- 1 Jan – 8 MarSydney is 17 hours ahead of Chicago.
- 8 Mar – 4 AprSydney is 16 hours ahead of Chicago.
- 4 Apr – 3 OctSydney is 15 hours ahead of Chicago.
- 3 Oct – 1 NovSydney is 16 hours ahead of Chicago.
- 1 Nov – 31 DecSydney is 17 hours ahead of Chicago.
- Chicago moves its clocks forward on 8 March (UTC−6 → UTC−5).
- Sydney moves its clocks back on 4 April (UTC+11 → UTC+10).
- Sydney moves its clocks forward on 3 October (UTC+10 → UTC+11).
- Chicago moves its clocks back on 1 November (UTC−5 → UTC−6).
Chicago to Sydney, hour by hour
On Tuesday 6 October.
| Chicago | Sydney |
|---|---|
| 07:00 Early morning | 23:00 Sleeping hours |
| 08:00 Early morning | 00:00+1 Sleeping hours |
| 09:00 Working hours | 01:00+1 Sleeping hours |
| 10:00 Working hours | 02:00+1 Sleeping hours |
| 11:00 Working hours | 03:00+1 Sleeping hours |
| 12:00 Working hours | 04:00+1 Sleeping hours |
| 13:00 Working hours | 05:00+1 Sleeping hours |
| 14:00 Working hours | 06:00+1 Sleeping hours |
| 15:00 Working hours | 07:00+1 Early morning |
| 16:00 Working hours | 08:00+1 Early morning |
| 17:00 Evening | 09:00+1 Working hours |
| 18:00 Evening | 10:00+1 Working hours |
| 19:00 Evening | 11:00+1 Working hours |
| 20:00 Evening | 12:00+1 Working hours |
| 21:00 Evening | 13:00+1 Working hours |
| 22:00 Sleeping hours | 14:00+1 Working hours |
Daylight saving in 2026
- Chicago moves its clocks forward on Sunday 8 March (UTC−6 → UTC−5).
- Sydney moves its clocks back on Saturday 4 April (UTC+11 → UTC+10).
- Sydney moves its clocks forward on Saturday 3 October (UTC+10 → UTC+11).
- Chicago moves its clocks back on Sunday 1 November (UTC−5 → UTC−6).
- 1 Jan – 8 MarSydney is 17 hours ahead of Chicago.
- 8 Mar – 4 AprSydney is 16 hours ahead of Chicago.
- 4 Apr – 3 OctSydney is 15 hours ahead of Chicago.
- 3 Oct – 1 NovSydney is 16 hours ahead of Chicago.
- 1 Nov – 31 DecSydney is 17 hours ahead of Chicago.
Best times for a call
Working hours (09:00–17:00) in Chicago and Sydney don't overlap, so any call is early or late for someone.
- Chicago 15:00Working hoursSydney 07:00 +1Early morning
- Chicago 16:00Working hoursSydney 08:00 +1Early morning
- Chicago 17:00EveningSydney 09:00 +1Working hours
More time differences for Chicago and Sydney
- New York and Chicago
- New York and Sydney
- Los Angeles and Chicago
- Los Angeles and Sydney
- Chicago and Toronto
- Chicago and London
- Chicago and Paris
- Chicago and Berlin
- Chicago and Dubai
- Chicago and Karachi
- Chicago and Mumbai
- Chicago and Singapore
- Chicago and Tokyo
- Toronto and Sydney
- London and Sydney
- Paris and Sydney
- Berlin and Sydney
- Dubai and Sydney
- Karachi and Sydney
- Mumbai and Sydney
- Singapore and Sydney
- Tokyo and Sydney
- Chicago and Seoul
- Chicago and Beijing
- Chicago and Shanghai
- Chicago and Hong Kong
- Chicago and Kuala Lumpur
- Chicago and Jakarta
- Chicago and Manila
- Chicago and Bangkok
- Chicago and Ho Chi Minh City
- Chicago and Delhi
How the time difference calculator works
The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.
Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.
Examples
- London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
- Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.
Good for
- Knowing when a colleague's day starts
- Setting expectations for replies across time zones
- Planning travel and jet lag
Frequently asked questions
- What time is it in Sydney when it's 9 AM in Chicago?
- 1:00 AM (next day) — as of 6 October 2026. Sydney is 16 hours ahead of Chicago.
- Does the time difference between Chicago and Sydney change?
- Yes. In 2026 it's 17 hours or 16 hours or 15 hours, depending on the date, because the two cities change their clocks on different dates.
- What's the best time for a call between Chicago and Sydney?
- There's no hour when both cities are in working hours (09:00–17:00). The fairest is around 15:00 in Chicago (07:00 in Sydney).
- What time zones are Chicago and Sydney in?
- Chicago uses America/Chicago (UTC−5 today); Sydney uses Australia/Sydney (UTC+11 today).
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