Chicago to London time difference
Chicago
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London
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Difference right now: —
Chicago (United States) and London (United Kingdom) are 6 hours apart, with London ahead of Chicago right now. Chicago is UTC−5; London is UTC+1. US Central business teams, one hour behind New York all year. European finance and HQ calls. British Summer Time runs from late March to late October. Weekday 09:00–18:00 overlaps for 3 hours. The figures are computed for 2026年10月19日 Japan time from the timezone database. The clocks at the top update every second in your browser.
Current difference
When it is noon in Chicago, it is 18:00 in London. The gap is 6 hours (London minus Chicago).
Does daylight saving change the gap?
Just after Oct 25, 2026 01:59 London time, the clock reads Oct 25, 2026 01:00 and the offset moves from UTC+1 to UTC+0. The Chicago–London gap goes from London 6 hours ahead to London 5 hours ahead. Just after Nov 1, 2026 01:59 Chicago time, the clock reads Nov 1, 2026 01:00 and the offset moves from UTC−5 to UTC−6. The Chicago–London gap goes from London 5 hours ahead to London 6 hours ahead.
24-hour comparison
One civil day in Chicago, and the matching clock in London. Green means both cities are inside 09:00–18:00. Amber is the 07:00–22:00 compromise.
| 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 | next day 00:00 |
| 19:00 | next day 01:00 |
| 20:00 | next day 02:00 |
| 21:00 | next day 03:00 |
| 22:00 | next day 04:00 |
| 23:00 | next day 05:00 |
- Both cities 09:00–18:00
- 07:00–22:00 compromise
Best time for a meeting
Weekday 09:00–18:00 overlaps at Chicago 09:00–12:00 (London 15:00–18:00). Both sides stay inside a normal working day. Those hours are the green rows.
FAQ
- What is the time difference between Chicago and London right now?
- They are 6 hours apart, with London ahead of Chicago. Chicago is UTC−5 and London is UTC+1 as of 2026年10月19日 Japan time.
- When it is noon in Chicago, what time is it in London?
- Noon in Chicago is 18:00 in London.
- Does daylight saving change the difference?
- Just after Oct 25, 2026 01:59 London time, the clock reads Oct 25, 2026 01:00 and the offset moves from UTC+1 to UTC+0. The Chicago–London gap goes from London 6 hours ahead to London 5 hours ahead. Just after Nov 1, 2026 01:59 Chicago time, the clock reads Nov 1, 2026 01:00 and the offset moves from UTC−5 to UTC−6. The Chicago–London gap goes from London 5 hours ahead to London 6 hours ahead.
- What is the best time for a meeting between Chicago and London?
- Weekday 09:00–18:00 overlaps at Chicago 09:00–12:00 (London 15:00–18:00). Both sides stay inside a normal working day. Those hours are the green rows.
- What is the difference from London back to Chicago?
- Chicago is 6 hours behind London. On Autoki, each person marks availability in their own city.