Time Difference Between Chicago and Sydney
Sydney is 16 hours ahead of Chicago.
Sydney is 16 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 1:00 AM the next day in Sydney.
What time is it in Sydney?
For a given hour in Chicago, here’s the matching local time in Sydney. Highlighted rows fall within Sydney’s working hours (9 AM–5 PM) — the easiest times to reach someone.
| Chicago | Sydney |
|---|---|
| 12:00 AM | 4:00 PMworking hours |
| 3:00 AM | 7:00 PM |
| 6:00 AM | 10:00 PM |
| 9:00 AM | 1:00 AM the next day |
| 12:00 PM | 4:00 AM the next day |
| 3:00 PM | 7:00 AM the next day |
| 6:00 PM | 10:00 AM the next dayworking hours |
| 9:00 PM | 1:00 PM the next dayworking hours |
How far apart are Chicago and Sydney?
Sydney (Australia) runs 16 hours ahead of Chicago (United States). In practical terms, the working day in Sydney starts while Chicago is still in the early hours or asleep, which is what makes scheduling between the two take a little planning.
Best time to schedule a call or meeting
Standard working hours in Chicago and Sydney barely overlap, so a live call usually means one side joining early in the morning or late in the evening. The least disruptive option is to catch the very start or end of one city’s working day, or to handle things asynchronously.
A note on daylight saving
Chicago and Sydney sit in opposite hemispheres and both observe daylight saving, so they shift their clocks in opposite directions. The difference can swing by up to two hours across the year, so always re-check the offset for your specific dates.
📶 Need Mobile Data While Traveling?
Activate an international eSIM in minutes, skip expensive roaming fees, and stay connected the moment you land — no physical SIM card needed.
Get a Travel eSIM with Yesim →Affiliate link — we may earn a small commission at no extra cost to you.
Frequently Asked Questions
What is the time difference between Chicago and Sydney?
Sydney is 16 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 1:00 AM the next day in Sydney.
When it is 9:00 AM in Chicago, what time is it in Sydney?
It is 1:00 AM the next day in Sydney. Going the other way, when it is 9:00 AM in Sydney it is 5:00 PM the previous day in Chicago.
What is the best time to call between Chicago and Sydney?
There is little or no overlap between standard 9-to-5 working hours in Chicago and Sydney, so a call usually means one side taking it early morning or late evening. Aim for the start or end of one city's working day.
Does the Chicago–Sydney time difference change with daylight saving?
Chicago and Sydney sit in opposite hemispheres and both observe daylight saving, so they shift their clocks in opposite directions. The difference can swing by up to two hours across the year, so always re-check the offset for your specific dates.