London to Chicago Time
Chicago is 6 hours behind London for most of the year. The gap changes for a few weeks a year because the two places switch to daylight saving time on different dates.
Chicago to London insteadTime difference between London and Chicago
Chicago is 6 hours behind London for most of the year.
- 2026: Chicago is 5 hours behind London from Mar 8 – Mar 28, 2026, Oct 25 – Oct 31, 2026.
- 2027: Chicago is 5 hours behind London from Mar 14 – Mar 27, 2027, Oct 31 – Nov 6, 2027.
London to Chicago conversion table
| London | ChicagoMost of the year | ChicagoMar 8 – Mar 28, 2026, Oct 25 – Oct 31, 2026 |
|---|---|---|
| 12 AM | 6 PM−1 day | 7 PM−1 day |
| 1 AM | 7 PM−1 day | 8 PM−1 day |
| 2 AM | 8 PM−1 day | 9 PM−1 day |
| 3 AM | 9 PM−1 day | 10 PM−1 day |
| 4 AM | 10 PM−1 day | 11 PM−1 day |
| 5 AM | 11 PM−1 day | 12 AM |
| 6 AM | 12 AM | 1 AM |
| 7 AM | 1 AM | 2 AM |
| 8 AM | 2 AM | 3 AM |
| 9 AM | 3 AM | 4 AM |
| 10 AM | 4 AM | 5 AM |
| 11 AM | 5 AM | 6 AM |
| 12 PM | 6 AM | 7 AM |
| 1 PM | 7 AM | 8 AM |
| 2 PM | 8 AM | 9 AM |
| 3 PM | 9 AM | 10 AM |
| 4 PM | 10 AM | 11 AM |
| 5 PM | 11 AM | 12 PM |
| 6 PM | 12 PM | 1 PM |
| 7 PM | 1 PM | 2 PM |
| 8 PM | 2 PM | 3 PM |
| 9 PM | 3 PM | 4 PM |
| 10 PM | 4 PM | 5 PM |
| 11 PM | 5 PM | 6 PM |
Best time to meet
Working hours (9 AM – 5 PM) overlap for 2 hours: 3 PM – 5 PM London (9 AM – 11 AM Chicago). That window is the best time for calls and meetings.
Frequently asked questions
What time is it in Chicago when it's 9 AM in London?
3 AM for most of the year. Chicago is 6 hours behind London.
How many hours is Chicago behind London?
Usually 6 hours. The gap changes for a few weeks a year because daylight saving time starts and ends on different dates: 2026: Chicago is 5 hours behind London from Mar 8 – Mar 28, 2026, Oct 25 – Oct 31, 2026. 2027: Chicago is 5 hours behind London from Mar 14 – Mar 27, 2027, Oct 31 – Nov 6, 2027.
Does London use daylight saving time?
Yes. London is UTC+0 (GMT) in January and UTC+1 (BST) in July. Mar 29, 2026: clocks go forward to UTC+1; Oct 25, 2026: clocks go back to UTC+0.
Does Chicago use daylight saving time?
Yes. Chicago is UTC−6 (CST) in January and UTC−5 (CDT) in July. Mar 8, 2026: clocks go forward to UTC−5; Nov 1, 2026: clocks go back to UTC−6.
When is the best time to schedule a meeting between London and Chicago?
Working hours (9 AM – 5 PM) overlap for 2 hours: 3 PM – 5 PM London (9 AM – 11 AM Chicago). That window is the best time for calls and meetings.