Chicago to London Time
London is currently 6 hours ahead of Chicago.
Current Time
Chicago
--:--:--London
--:--:--Daylight Saving Time Status
Chicago
Chicago is currently observing CDT (summer time). Returns to standard time on November 1, 2026.
London
London is currently observing GMT+1 (summer time). Returns to standard time on October 25, 2026.
Best Meeting Times
| Chicago Time | London Time | Meeting Suitability |
|---|---|---|
| 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 | ⚠️ Edge |
| 09:00 | 15:00 | ✅ Good |
| 10:00 | 16:00 | ✅ Good |
| 11:00 | 17:00 | ✅ Good |
| 12:00 | 18:00 | ⚠️ Edge |
| 13:00 | 19:00 | — |
| 14:00 | 20:00 | — |
| 15:00 | 21:00 | — |
| 16:00 | 22:00 | — |
| 17:00 | 23:00 | — |
| 18:00 | 00:00+1d | — |
| 19:00 | 01:00+1d | — |
| 20:00 | 02:00+1d | — |
| 21:00 | 03:00+1d | — |
| 22:00 | 04:00+1d | — |
| 23:00 | 05:00+1d | — |
✅ Both cities within 9 AM–6 PM ⚠️ One city on edge of working hours
About This Time Zone Pair
Chicago (CDT) is 6 hours behind London (GMT+1). When it's 9:00 AM in Chicago, it's 3:00 PM in London.
Chicago and London observe Daylight Saving Time, which means the offset between the two cities may shift by one hour during DST transitions — particularly if the two regions change their clocks on different dates.
The best window for live meetings between Chicago and London is 9am–12pm CDT — that's 3pm–6pm GMT+1 for London. Outside this window, async communication or recorded video is more practical.
For one-off conversions, use the converter above. For recurring meetings, export an .ics calendar invite — attendees see the time in their local zone automatically.
Frequently Asked Questions
- What is the time difference between Chicago and London?
- London is 6 hours ahead of Chicago. This offset may shift by one hour when either city transitions in or out of Daylight Saving Time.
- What is a good meeting time between Chicago and London?
- The best window is 9am–12pm Chicago time, which is 3pm–6pm in London. Both cities are within standard working hours during this range.
- When does Chicago switch to and from Daylight Saving Time?
- Chicago observes Daylight Saving Time. Check the DST status section above for the exact next transition date — it is calculated live from the IANA timezone database.
- How do I convert CST to GMT manually?
- Add 6 hours to the CST time. For example, 9:00 AM CST = 3:00 PM GMT. (DST may shift this by ±1 hour twice a year.)