World Time ZonesTime difference: Chicago and Sydney
Last updated:
Difference now+16 hSydney is 16 h ahead of Chicago
Time in Sydney01:10UTC+11
Time in Chicago09:10UTC−5
Changes per year4due to DST
Weekday 9–18 overlap1 h
Difference by month (2026, 1st of each month)
| Month | Difference |
|---|---|
| Jan | +17 h |
| Feb | +17 h |
| Mar | +17 h |
| Apr | +16 h |
| May | +15 h |
| Jun | +15 h |
| Jul | +15 h |
| Aug | +15 h |
| Sep | +15 h |
| Oct | +15 h |
| Nov | +17 h |
| Dec | +17 h |
Days in 2026 at each difference
182 d
56 d
127 d
Chicago → Sydney conversion (today)
| Chicago | Sydney |
|---|---|
| 00:00 | 16:00 |
| 01:00 | 17:00 |
| 02:00 | 18:00 |
| 03:00 | 19:00 |
| 04:00 | 20:00 |
| 05:00 | 21:00 |
| 06:00 | 22:00 |
| 07:00 | 23:00 |
| 08:00 | 00:00 (+1 d) |
| 09:00 | 01:00 (+1 d) |
| 10:00 | 02:00 (+1 d) |
| 11:00 | 03:00 (+1 d) |
| 12:00 | 04:00 (+1 d) |
| 13:00 | 05:00 (+1 d) |
| 14:00 | 06:00 (+1 d) |
| 15:00 | 07:00 (+1 d) |
| 16:00 | 08:00 (+1 d) |
| 17:00 | 09:00 (+1 d) |
| 18:00 | 10:00 (+1 d) |
| 19:00 | 11:00 (+1 d) |
| 20:00 | 12:00 (+1 d) |
| 21:00 | 13:00 (+1 d) |
| 22:00 | 14:00 (+1 d) |
| 23:00 | 15:00 (+1 d) |
Overlapping office hours today (09–18 local)
17:00 Chicago = 09:00 Sydney
Clock changes 2026–2027
| Place | Local time | Change |
|---|---|---|
| Chicago | 2026-03-08 03:00 | UTC−6 → UTC−5 |
| Sydney | 2026-04-05 02:00 | UTC+11 → UTC+10 |
| Sydney | 2026-10-04 03:00 | UTC+10 → UTC+11 |
| Chicago | 2026-11-01 01:00 | UTC−5 → UTC−6 |
| Chicago | 2027-03-14 03:00 | UTC−6 → UTC−5 |
| Sydney | 2027-04-04 02:00 | UTC+11 → UTC+10 |
| Sydney | 2027-10-03 03:00 | UTC+10 → UTC+11 |
| Chicago | 2027-11-07 01:00 | UTC−5 → UTC−6 |
Calculated from the IANA Time Zone Database; governments can change their rules.
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Sydney is 16 h ahead of Chicago.