Chicago ↔ Sydney
Best Time to Call
Excellent overlap! The best window to call is between 16:00 and 17:00 (Chicago time).
Sync Chicago and Sydney easily. Chicago is 17 hours behind Sydney. Excellent overlap! The best window to call is between 16:00 and 17:00 (Chicago time).
Upcoming Time Change
- New York City clocks forward 1h in 11 days Mar 09
💡 Review recurring meetings scheduled during these dates to avoid sync issues.
Meeting Optimizer
Sync Score
3.3/10
-12h Current Time +12h
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Tokyo
15:38 GMT+9
Working
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New York City
01:38 EST
Sleeping
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London
06:38 GMT
Sleeping
Synchronization Context
Operating on opposite sides of the clock, these cities have virtually no overlapping business hours. Expect a 24-hour turnaround for most communications.
Chicago Business Pulse
- Culture Practical, hardworking, and friendly. A major hub for logistics, finance, and manufacturing.
- Lunch Break 12:00 PM - 1:00 PM.
- Pro Tip Best times for calls are 9:00 AM to 11:30 AM. Chicagoans are known for being practical and direct but also friendlier than their East Coast counterparts. The Central Time Zone is the "Goldilocks zone" for North American business, allowing for easy syncs with both NYC and LA.
Sydney Business Pulse
- Culture Relatively relaxed but professional. Early starts are common to maximize daylight.
- Lunch Break 12:00 PM - 1:00 PM.
- Pro Tip Due to the significant time difference with Europe and the US, early mornings (8:30 AM - 10:00 AM) are often dedicated to international syncs. For domestic calls, late mornings are best. Be mindful that many Australians start and end their day earlier than their Northern Hemisphere counterparts.
Quick Comparison
| Feature | Chicago | Sydney |
|---|---|---|
| Timezone | America/Chicago | Australia/Sydney |
| Country | USA | Australia |
| Coordinates | 41.88, -87.63 | -33.87, 151.21 |
| Population | 8,939,000 | 5,121,000 |