Time difference between Chicago and London

London is 6 hours ahead of Chicago

Chicago, the United States is UTC−6 · London, the United Kingdom is UTC — on standard time

The gap is not the same all year

Every converter gives one number for this pair. That number is right for most of the year and wrong for part of it, because Chicago goes forward on the second Sunday in March and back on the first Sunday in November and London goes forward on the last Sunday in March and back on the last Sunday in October.

Both change their clocks and both are in the northern hemisphere, but not on the same weekend — Chicago goes forward on the second Sunday in March and London on the last Sunday in March. For the days in between, the gap is neither party's expected figure, and a standing meeting silently moves by an hour. That mismatch is a common cause of a missed international call.

When they can both be at their desks

Nine-to-five in both cities overlaps for 2 hours — 9:00 AM to 11:00 AM in Chicago, the same moment as 3:00 PM to 5:00 PM in London.

Chicago to London, hour by hour

On the usual gap of 6 hours.

Frequently asked questions

Other pairs

• Chicago to Dublin
• Chicago to Lisbon
• Chicago to Paris
• Chicago to Berlin
• Chicago to Madrid
• Chicago to Rome
• Chicago to Amsterdam
• Chicago to Stockholm
• Chicago to Warsaw
• Chicago to Athens

Every Chicago pair · Every London pair · All city pairs · Time zones by abbreviation