Sydney is usually 15 hours ahead of Chicago, so Chicago is usually 15 hours behind Sydney.
Chicago, United States uses Central Time (America/Chicago); Sydney, Australia uses Australian Eastern Time (Australia/Sydney). The difference changes during the year because of daylight saving time (dates are approximate and follow current rules): 17 hours ahead from Nov 7 to Mar 13; 16 hours ahead from Mar 14 to Apr 3; 15 hours ahead from Apr 4 to Oct 2; 16 hours ahead from Oct 3 to Nov 6.
| Chicago | Sydney |
|---|---|
| 6:00 AM | 9:00 PM |
| 8:00 AM | 11:00 PM |
| 9:00 AM | 12:00 AM (next day) |
| 12:00 PM | 3:00 AM (next day) |
| 3:00 PM | 6:00 AM (next day) |
| 5:00 PM | 8:00 AM (next day) |
| 6:00 PM | 9:00 AM (next day) |
| 8:00 PM | 11:00 AM (next day) |
| 10:00 PM | 1:00 PM (next day) |
This table is for the usual difference; with JavaScript on it recalculates for today’s date.
Sydney is usually 15 hours ahead of Chicago, so Chicago is usually 15 hours behind Sydney. The difference changes during the year because of daylight saving time (dates are approximate and follow current rules): 17 hours ahead from Nov 7 to Mar 13; 16 hours ahead from Mar 14 to Apr 3; 15 hours ahead from Apr 4 to Oct 2; 16 hours ahead from Oct 3 to Nov 6.
Usually 12:00 AM (next day) in Sydney, based on the usual 15 hours gap. Use the live table above for today’s exact conversion.
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