World Time ZonesTime difference: London and Chicago
Last updated:
Difference now−6 hChicago is 6 h behind London
Time in Chicago09:10UTC−5
Time in London15:10UTC+1
Changes per year4due to DST
Weekday 9–18 overlap3 h
Difference by month (2026, 1st of each month)
| Month | Difference |
|---|---|
| Jan | −6 h |
| Feb | −6 h |
| Mar | −6 h |
| Apr | −6 h |
| May | −6 h |
| Jun | −6 h |
| Jul | −6 h |
| Aug | −6 h |
| Sep | −6 h |
| Oct | −6 h |
| Nov | −6 h |
| Dec | −6 h |
Days in 2026 at each difference
337 d
28 d
London → Chicago conversion (today)
| London | Chicago |
|---|---|
| 00:00 | 18:00 (-1 d) |
| 01:00 | 19:00 (-1 d) |
| 02:00 | 20:00 (-1 d) |
| 03:00 | 21:00 (-1 d) |
| 04:00 | 22:00 (-1 d) |
| 05:00 | 23:00 (-1 d) |
| 06:00 | 00:00 |
| 07:00 | 01:00 |
| 08:00 | 02:00 |
| 09:00 | 03:00 |
| 10:00 | 04:00 |
| 11:00 | 05:00 |
| 12:00 | 06:00 |
| 13:00 | 07:00 |
| 14:00 | 08:00 |
| 15:00 | 09:00 |
| 16:00 | 10:00 |
| 17:00 | 11:00 |
| 18:00 | 12:00 |
| 19:00 | 13:00 |
| 20:00 | 14:00 |
| 21:00 | 15:00 |
| 22:00 | 16:00 |
| 23:00 | 17:00 |
Overlapping office hours today (09–18 local)
15:00 London = 09:00 Chicago, 16:00 London = 10:00 Chicago, 17:00 London = 11:00 Chicago
Clock changes 2026–2027
| Place | Local time | Change |
|---|---|---|
| Chicago | 2026-03-08 03:00 | UTC−6 → UTC−5 |
| London | 2026-03-29 02:00 | UTC+0 → UTC+1 |
| London | 2026-10-25 01:00 | UTC+1 → UTC+0 |
| Chicago | 2026-11-01 01:00 | UTC−5 → UTC−6 |
| Chicago | 2027-03-14 03:00 | UTC−6 → UTC−5 |
| London | 2027-03-28 02:00 | UTC+0 → UTC+1 |
| London | 2027-10-31 01:00 | UTC+1 → UTC+0 |
| Chicago | 2027-11-07 01:00 | UTC−5 → UTC−6 |
Calculated from the IANA Time Zone Database; governments can change their rules.
About this page
Chicago is 6 h behind London.