Chicago, United States
Sat, Jul 4, 2026 09:37
- Timezone
- America/Chicago
- UTC offset
- UTC-05:00
- Daylight saving
- Yes
Chicago and Sydney Time Difference
Compare Chicago vs Sydney time, current local times, UTC offset difference, daylight saving status, and the best time to plan meetings or travel.
Quick Answer
What is the time difference between Chicago and Sydney?
The live comparison below shows both local times, current UTC offsets, daylight saving status, and whether Sydney is ahead of or behind Chicago.
Current time difference
Sydney, Australia
Sun, Jul 5, 2026 00:37
- Timezone
- Australia/Sydney
- UTC offset
- UTC+10:00
- Daylight saving
- No
Time difference
Sydney is 15 hours ahead of Chicago
UTC offset difference
+15:00
Suggested call window
Sat, Jul 4, 18:00-23:00 / Sun, Jul 5, 09:00-14:00
Calculated using initiator awake hours of 08:00-23:00 and recipient office hours of 09:00-18:00.
Dynamic Time Difference
Chicago is 15 hours behind Sydney
The difference changes during 2026 because Chicago changes UTC offset during the year and Sydney changes UTC offset during the year. Jan 1-Mar 7: Chicago is 17 hours behind Sydney; Mar 8-Apr 4: Chicago is 16 hours behind Sydney; Apr 5-Oct 3: Chicago is 15 hours behind Sydney; Oct 4-Oct 31: Chicago is 16 hours behind Sydney; Nov 1-Dec 31: Chicago is 17 hours behind Sydney.
Chicago
UTC-05:00 · Seasonal clock changes; DST is active now
Sydney
UTC+10:00 · Seasonal clock changes; DST is inactive now
Business Call Window
09:00-18:00 work-hour overlap
The standard workdays do not overlap. Consider 18:00 in Chicago / 09:00 in Sydney, or 18:00 in Chicago / 09:00 in Sydney. Confirm the edge-of-day option before calling.
24-Hour Conversion Table
Chicago to Sydney hourly time conversion
The table uses today's active UTC offsets. Seasonal rows can shift when daylight saving time changes.
| Chicago | Sydney |
|---|---|
| 00:00 | 15:00 |
| 01:00 | 16:00 |
| 02:00 | 17:00 |
| 03:00 | 18:00 |
| 04:00 | 19:00 |
| 05:00 | 20:00 |
| 06:00 | 21:00 |
| 07:00 | 22:00 |
| 08:00 | 23:00 |
| 09:00 | 00:00 (next day) |
| 10:00 | 01:00 (next day) |
| 11:00 | 02:00 (next day) |
| 12:00 | 03:00 (next day) |
| 13:00 | 04:00 (next day) |
| 14:00 | 05:00 (next day) |
| 15:00 | 06:00 (next day) |
| 16:00 | 07:00 (next day) |
| 17:00 | 08:00 (next day) |
| 18:00 | 09:00 (next day) |
| 19:00 | 10:00 (next day) |
| 20:00 | 11:00 (next day) |
| 21:00 | 12:00 (next day) |
| 22:00 | 13:00 (next day) |
| 23:00 | 14:00 (next day) |
FAQ
What is the current time difference between Chicago and Sydney?
Chicago is 15 hours behind Sydney. This uses the active IANA timezone offsets for today.
When does the Chicago-Sydney time difference change in 2026?
The difference changes during 2026 because Chicago changes UTC offset during the year and Sydney changes UTC offset during the year. Jan 1-Mar 7: Chicago is 17 hours behind Sydney; Mar 8-Apr 4: Chicago is 16 hours behind Sydney; Apr 5-Oct 3: Chicago is 15 hours behind Sydney; Oct 4-Oct 31: Chicago is 16 hours behind Sydney; Nov 1-Dec 31: Chicago is 17 hours behind Sydney.
What are the current UTC offsets for Chicago and Sydney?
Chicago is currently UTC-05:00; Sydney is currently UTC+10:00.
Which direction does the clock change when flying from Chicago to Sydney?
Travelers from Chicago to Sydney move their clock forward by 15 hours.
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