Chicago, United States
Sat, Jul 4, 2026 09:37
- Timezone
- America/Chicago
- UTC offset
- UTC-05:00
- Daylight saving
- Yes
Chicago and London Time Difference
Compare Chicago vs London 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 London?
The live comparison below shows both local times, current UTC offsets, daylight saving status, and whether London is ahead of or behind Chicago.
Current time difference
London, United Kingdom
Sat, Jul 4, 2026 15:37
- Timezone
- Europe/London
- UTC offset
- UTC+01:00
- Daylight saving
- Yes
Time difference
London is 6 hours ahead of Chicago
UTC offset difference
+06:00
Suggested call window
Sat, Jul 4, 08:00-12:00 / Sat, Jul 4, 14:00-18:00
Calculated using initiator awake hours of 08:00-23:00 and recipient office hours of 09:00-18:00.
Dynamic Time Difference
Chicago is 6 hours behind London
The difference changes during 2026 because Chicago changes UTC offset during the year and London changes UTC offset during the year. Jan 1-Mar 7: Chicago is 6 hours behind London; Mar 8-Mar 28: Chicago is 5 hours behind London; Mar 29-Oct 24: Chicago is 6 hours behind London; Oct 25-Oct 31: Chicago is 5 hours behind London; Nov 1-Dec 31: Chicago is 6 hours behind London.
Chicago
UTC-05:00 · Seasonal clock changes; DST is active now
London
UTC+01:00 · Seasonal clock changes; DST is active now
Business Call Window
09:00-18:00 work-hour overlap
Both 09:00-18:00 workdays overlap. A practical window is 09:00-12:00 in Chicago, which is 15:00-18:00 in London.
Chicago: 09:00-12:00
London: 15:00-18:00
24-Hour Conversion Table
Chicago to London hourly time conversion
The table uses today's active UTC offsets. Seasonal rows can shift when daylight saving time changes.
| Chicago | London |
|---|---|
| 00:00 | 06:00 |
| 01:00 | 07:00 |
| 02:00 | 08:00 |
| 03:00 | 09:00 |
| 04:00 | 10:00 |
| 05:00 | 11:00 |
| 06:00 | 12:00 |
| 07:00 | 13:00 |
| 08:00 | 14:00 |
| 09:00 | 15:00 |
| 10:00 | 16:00 |
| 11:00 | 17:00 |
| 12:00 | 18:00 |
| 13:00 | 19:00 |
| 14:00 | 20:00 |
| 15:00 | 21:00 |
| 16:00 | 22:00 |
| 17:00 | 23:00 |
| 18:00 | 00:00 (next day) |
| 19:00 | 01:00 (next day) |
| 20:00 | 02:00 (next day) |
| 21:00 | 03:00 (next day) |
| 22:00 | 04:00 (next day) |
| 23:00 | 05:00 (next day) |
FAQ
What is the current time difference between Chicago and London?
Chicago is 6 hours behind London. This uses the active IANA timezone offsets for today.
When does the Chicago-London time difference change in 2026?
The difference changes during 2026 because Chicago changes UTC offset during the year and London changes UTC offset during the year. Jan 1-Mar 7: Chicago is 6 hours behind London; Mar 8-Mar 28: Chicago is 5 hours behind London; Mar 29-Oct 24: Chicago is 6 hours behind London; Oct 25-Oct 31: Chicago is 5 hours behind London; Nov 1-Dec 31: Chicago is 6 hours behind London.
What are the current UTC offsets for Chicago and London?
Chicago is currently UTC-05:00; London is currently UTC+01:00.
Which direction does the clock change when flying from Chicago to London?
Travelers from Chicago to London move their clock forward by 6 hours.
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