Chicago to Sydney Time Converter
Sydney, Australia is currently 15 hours ahead of Chicago, US. Chicago is on CDT (UTC-5) and Sydney is on AEST (UTC+10). The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
Both sides are inside 9:00 AM to 5:00 PM office hours between 9:00 AM and 5:00 PM in Chicago, which is 9:00 AM to 5:00 PM in Sydney.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: Chicago to Sydney
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
The difference between Chicago and Sydney is not fixed. It is 17 hours in January and 15 hours in July, because the two places handle daylight saving differently. This page always reflects the current offsets.
Frequently Asked Questions
How many hours ahead is Sydney compared to Chicago?
Sydney is currently 15 hours ahead of Chicago. The difference between Chicago and Sydney is not fixed. It is 17 hours in January and 15 hours in July, because the two places handle daylight saving differently. This page always reflects the current offsets.
What time is 9:00 AM in Chicago in Sydney?
9:00 AM in Chicago is 12:00 AM in Sydney on the next day.
What is the best time for a call between Chicago and Sydney?
Both sides are inside 9:00 AM to 5:00 PM office hours between 9:00 AM and 5:00 PM in Chicago, which is 9:00 AM to 5:00 PM in Sydney.