Time Difference

Chicago vs Sydney Time Difference

Compare the current local time in Chicago, United States and Sydney, Australia.

Live local timeDST awareUTC offsets

From

Chicago

United States

1:14 AM

Sun, Nov 1

UTC-6America/Chicago

Difference

17 hours

Swap

Sydney

Australia

6:14 PM

Sun, Nov 1

UTC+11Australia/Sydney

Current difference

Sydney is currently 17 hours ahead of Chicago.

This difference is calculated using the current UTC offsets for both locations and automatically reflects daylight-saving changes.

24-hour comparison

Compare Chicago and Sydney hour by hour

See how a full local day in Chicago, United States maps to Sydney, Australia. TimeInOne automatically accounts for timezone offsets, date changes and daylight-saving transitions.

25-hour DST day

Best working-hours overlap

4:00 PM – 6:00 PM in Chicago

corresponds to 9:00 AM – 11:00 AM in Sydney.

2 hours overlap

Chicago

America/Chicago

Sydney

Australia/Sydney

Availability

12:00 AM

Sun, Nov 1

4:00 PM

Sun, Nov 1

Night

1:00 AM

Sun, Nov 1

5:00 PM

Sun, Nov 1

Night

1:00 AM

Sun, Nov 1

6:00 PM

Sun, Nov 1

Night

2:00 AM

Sun, Nov 1

7:00 PM

Sun, Nov 1

Night

3:00 AM

Sun, Nov 1

8:00 PM

Sun, Nov 1

Night

4:00 AM

Sun, Nov 1

9:00 PM

Sun, Nov 1

Night

5:00 AM

Sun, Nov 1

10:00 PM

Sun, Nov 1

Night

6:00 AM

Sun, Nov 1

11:00 PM

Sun, Nov 1

Night

7:00 AM

Sun, Nov 1

12:00 AM

Next day

Mon, Nov 2

Night

8:00 AM

Sun, Nov 1

1:00 AM

Next day

Mon, Nov 2

Night

9:00 AM

Sun, Nov 1

2:00 AM

Next day

Mon, Nov 2

Night

10:00 AM

Sun, Nov 1

3:00 AM

Next day

Mon, Nov 2

Night

11:00 AM

Sun, Nov 1

4:00 AM

Next day

Mon, Nov 2

Night

12:00 PM

Sun, Nov 1

5:00 AM

Next day

Mon, Nov 2

Night

1:00 PM

Sun, Nov 1

6:00 AM

Next day

Mon, Nov 2

Night

2:00 PM

Sun, Nov 1

7:00 AM

Next day

Mon, Nov 2

Possible

3:00 PM

Sun, Nov 1

8:00 AM

Next day

Mon, Nov 2

Possible

4:00 PM

Sun, Nov 1

9:00 AM

Next day

Mon, Nov 2

Good overlap

5:00 PM

Sun, Nov 1

10:00 AM

Next day

Mon, Nov 2

Good overlap

6:00 PM

Sun, Nov 1

11:00 AM

Next day

Mon, Nov 2

Possible

7:00 PM

Sun, Nov 1

12:00 PM

Next day

Mon, Nov 2

Possible

8:00 PM

Sun, Nov 1

1:00 PM

Next day

Mon, Nov 2

Possible

9:00 PM

Sun, Nov 1

2:00 PM

Next day

Mon, Nov 2

Night

10:00 PM

Sun, Nov 1

3:00 PM

Next day

Mon, Nov 2

Night

11:00 PM

Sun, Nov 1

4:00 PM

Next day

Mon, Nov 2

Night

Working-hour labels use a general 9:00 AM–6:00 PM schedule. Individual schedules may differ.

On daylight-saving transition dates, a local day can contain 23 or 25 real hours instead of 24.

Call planning

Best time to call Sydney from Chicago

Compare typical business hours in Chicago, United States and Sydney, Australia to find a practical time for calls, meetings or international coordination.

Chicago

4:00 PM – 6:00 PM

United States

Best overlap

Sydney

9:00 AM – 11:00 AM

Australia

The best time to call Sydney from Chicago is between 4:00 PM and 6:00 PM in Chicago. This corresponds to 9:00 AM – 11:00 AM in Sydney.

Other reasonable windows

Chicago

2:00 PM – 4:00 PM

Sydney

7:00 AM – 9:00 AM

Chicago

6:00 PM – 9:00 PM

Sydney

11:00 AM – 2:00 PM

Recommendations use typical 9:00 AM–6:00 PM business hours and a broader 7:00 AM–9:00 PM acceptable calling window. Individual schedules may differ.

Time difference explained

Chicago and Sydney time difference explained

Current local-time relationship

Sydney is currently 17 hours ahead of Chicago.

Chicago uses America/Chicago and currently has an offset of UTC-6. Sydney uses Australia/Sydney and currently has an offset of UTC+11.

Working-hours overlap

Typical 9:00 AM–6:00 PM business hours do not directly overlap, so calls may require an early-morning or evening schedule.

Because UTC offsets can change during the year, always check the selected date when planning an important international call or meeting.

Convert a specific time

Need more than the current difference?

Convert a specific date and local time between Chicago and Sydney.

Open time converter

Local clocks

Explore each city

Current time in Chicago Current time in Sydney

FAQ

Chicago to Sydney time difference FAQ

Common questions about the current time difference, UTC offsets, daylight-saving changes and practical calling hours between Chicago and Sydney.

What is the time difference between Chicago and Sydney?

The current time difference between Chicago and Sydney is 17 hours. Sydney is currently 17 hours ahead of Chicago.

Is Sydney ahead of or behind Chicago?

Sydney is currently 17 hours ahead of Chicago.

What time is it in Sydney when it is 9:00 AM in Chicago?

Using the current UTC offsets, 9:00 AM in Chicago corresponds to 2:00 AM the next day in Sydney. The exact difference can change when daylight-saving rules change.

What is the best time to call Sydney from Chicago?

Typical 9:00 AM–6:00 PM business hours do not directly overlap between Chicago and Sydney. An early-morning or evening call may be more practical.

Can the time difference between Chicago and Sydney change?

Yes. The time difference can change if Chicago or Sydney changes its UTC offset because of daylight-saving or other local time-zone rules. TimeInOne uses the IANA zones America/Chicago and Australia/Sydney for date-aware calculations.