What is the time difference between Chicago and London?
London is 6 hours ahead of Chicago today. Chicago is on UTC−5, London on UTC+1. The difference changes on Saturday, October 24, 2026.
Chicago to London: time difference and best time to meet
London is 6 hours ahead of Chicago right now.
When it is 9:00 AM in Chicago, it is 3:00 PM in London. The green band on each scale is the working day, 9 AM to 6 PM. Drag a scale until both bands sit on the red line.
Hours that work for both
Both cities are inside a 9-to-6 working day 9:00 AM–12:00 PM in Chicago (3:00 PM–6:00 PM in London) — 3 hours in total.
ChicagoLondon
12:00 AM6:00 AM
1:00 AM7:00 AM
2:00 AM8:00 AM
3:00 AM9:00 AM
4:00 AM10:00 AM
5:00 AM11:00 AM
6:00 AM12:00 PM
7:00 AM1:00 PM
8:00 AM2:00 PM
9:00 AM3:00 PM
10:00 AM4:00 PM
11:00 AM5:00 PM
12:00 PM6:00 PM
1:00 PM7:00 PM
2:00 PM8:00 PM
3:00 PM9:00 PM
4:00 PM10:00 PM
5:00 PM11:00 PM
6:00 PM12:00 AMnext day
7:00 PM1:00 AMnext day
8:00 PM2:00 AMnext day
9:00 PM3:00 AMnext day
10:00 PM4:00 AMnext day
11:00 PM5:00 AMnext day
both at work both awake
When the difference changes
Chicago and London do not change their clocks on the same day, so the difference is not always 6 hours:
- from Saturday, October 24, 2026 it is 5 hours (was 6 hours)
- from Sunday, November 1, 2026 it is 6 hours (was 5 hours)
- from Sunday, March 14, 2027 it is 5 hours (was 6 hours)
- from Saturday, March 27, 2027 it is 6 hours (was 5 hours)
The scales above already follow these dates: drag to any day in the next two weeks and the difference shown is the one for that day.
Questions
What is the best time for a call between Chicago and London?
During working hours for both: 9:00 AM–12:00 PM in Chicago (3:00 PM–6:00 PM in London). That is 3 hours of shared working time.
When it is 9:00 AM in Chicago, what time is it in London?
3:00 PM. And when it is 9:00 AM in London, it is 3:00 AM in Chicago.
More
Open Chicago and London full screen · Plan a meeting for other cities