Time Difference Between Chicago and London
London is 6h ahead of Chicago.
This is the standard-time difference as of 2026. If either city observes daylight saving time, the actual difference can shift by up to an hour for part of the year — the live clocks below always show the current real-time difference.
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Working Hours Overlap
For each hour of Chicago's working day (9:00-18:00), here is the corresponding local time in London. Rows highlighted green fall within standard working hours (9:00-18:00) in both cities.
| Chicago | London | Both working hours? |
|---|---|---|
| 9 AM | 3 PM | Yes |
| 10 AM | 4 PM | Yes |
| 11 AM | 5 PM | Yes |
| 12 PM | 6 PM | No |
| 1 PM | 7 PM | No |
| 2 PM | 8 PM | No |
| 3 PM | 9 PM | No |
| 4 PM | 10 PM | No |
| 5 PM | 11 PM | No |
| 6 PM | 12 AM | No |
Best Time to Meet
- 9 AM-12 PM in Chicago (3 PM-6 PM in London) works for both sides — it falls within standard 9 AM-6 PM working hours in both time zones.
Chicago
Chicago uses the America/Chicago IANA time zone, currently at UTC-5. This zone observes daylight saving time.
London
London uses the Europe/London IANA time zone, currently at UTC+1. This zone observes daylight saving time.