Chicago to London time

Time difference between Chicago and London

London is 6 hours ahead of Chicago. Chicago is on Central Standard Time (CST (UTC−06:00)) and London is on Greenwich Mean Time (GMT (UTC+00:00)).

The gap stays the same all year, because the two time zones never change relative to each other.

Convert Chicago time to London time

These examples use the current offsets, UTC−06:00 for Chicago and UTC+00:00 for London. Use the converter above for any other time or date.

London is ahead, so from 6:00 PM to midnight in Chicago it is already the next calendar day in London.

Best time to call or meet: Chicago and London working hours

Taking 9:00 AM to 5:00 PM, Monday to Friday, as business hours, both cities are at work from 9:00 AM to 11:00 AM in Chicago (3:00 PM to 5:00 PM in London). That is 2 hours of shared working time each weekday.

Weekends, public holidays and local working weeks differ by country, so check those before booking.

Daylight saving time in Chicago and London

Chicago observes daylight saving time. Its next change is on Mar 14, 2027 at 2:00 AM, when clocks go forward 1 hour (UTC−06:00 to UTC−05:00).

London observes daylight saving time. Its next change is on Mar 28, 2027 at 1:00 AM, when clocks go forward 1 hour (UTC+00:00 to UTC+01:00).

Chicago and London change their clocks on different dates, so the time difference between them shifts for a few weeks around those changes. Check the converter for the exact date you need.