London is 6 hours ahead of Chicago.
Time difference
Chicago is 5 to 6 hours behind London, depending on daylight saving time. The gap changes by an hour during the weeks when the two cities' daylight saving schedules differ.
Working hours
A standard 9-to-6 workday in London overlaps with Chicago from 15:00 to 18:00 (09:00 to 12:00 in Chicago). The easiest time to meet is around 16:30 in London, which is 10:30 in Chicago.
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