Time in London vs Chicago
London keeps BST (UTC+1) and Chicago keeps CDT (UTC−5) today. Chicago is 6 hours behind London; the rows below read both clocks live.
The working day, side by side
Hours shaded in both rows are inside working hours in both cities: 09:00–12:00 in Chicago (15:00–18:00 your time).
| City | 00:00 in London | 01:00 in London | 02:00 in London | 03:00 in London | 04:00 in London | 05:00 in London | 06:00 in London | 07:00 in London | 08:00 in London | 09:00 in London | 10:00 in London | 11:00 in London | 12:00 in London | 13:00 in London | 14:00 in London | 15:00 in London | 16:00 in London | 17:00 in London | 18:00 in London | 19:00 in London | 20:00 in London | 21:00 in London | 22:00 in London | 23:00 in London |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| London—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Chicago—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
- Working hours
- Shoulder
- Night
- Overlap
Do more with London and Chicago
Best hours to call
Where daylight saving pulls them apart
London next changes on Sunday 25 October 2026. Chicago next changes on Sunday 1 November 2026. Between those two dates the gap between the cities is an hour different from the one shown above — which is exactly when a recurring meeting drifts. Every date we track is on the daylight saving page.
Also useful
Common questions
How many hours ahead is Chicago of London?
Chicago is 6 hours behind London right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between London and Chicago?
Any hour in 15:00–18:00 London time is inside working hours in both cities.
Do London and Chicago change clocks on the same date?
No. London changes on 25 October 2026 and Chicago on 1 November 2026, so the gap moves by an hour in between.