Time difference between Chicago and Sydney
17 hours
Sydney is 17 hours ahead of Chicago.
Does daylight saving change it?
Yes. In winter the gap is 17 hours; in summer it is 15 hours.
Overlapping work hours
Between 16:00 and 18:00 in Chicago, Sydney is also at work — 2 hours a day.
Chicago time → Sydney time
| 00:00 | 17:00 |
|---|---|
| 01:00 | 18:00 |
| 02:00 | 19:00 |
| 03:00 | 20:00 |
| 04:00 | 21:00 |
| 05:00 | 22:00 |
| 06:00 | 23:00 |
| 07:00 | 00:00next day |
| 08:00 | 01:00next day |
| 09:00 | 02:00next day |
| 10:00 | 03:00next day |
| 11:00 | 04:00next day |
| 12:00 | 05:00next day |
| 13:00 | 06:00next day |
| 14:00 | 07:00next day |
| 15:00 | 08:00next day |
| 16:00 | 09:00next day |
| 17:00 | 10:00next day |
| 18:00 | 11:00next day |
| 19:00 | 12:00next day |
| 20:00 | 13:00next day |
| 21:00 | 14:00next day |
| 22:00 | 15:00next day |
| 23:00 | 16:00next day |
Standard time (January). During daylight saving each row shifts by an hour.
Frequently asked questions
Q. How many hours is Chicago ahead of Sydney?
17 hours on standard time. During daylight saving it becomes 15 hours, an hour more or less.
Q. What time is it in Sydney when it is noon in Chicago?
Read the 12:00 row of the 24-hour table below. The table is on standard time, so each row shifts an hour during daylight saving.
Q. When should we schedule a meeting?
The two cities' work hours (09:00–18:00) overlap for 2 hours a day. Anything inside that window catches both sides at work.