What is the time difference between Chicago and London?

Chicago (US) uses the America/Chicago timezone at UTC-6, while London (UK) uses Europe/London at UTC+0. This means London is 6 hours ahead of Chicago (based on standard offsets — the live difference above accounts for daylight saving time).

When scheduling a call or meeting between Chicago and London, look for the overlapping work hours highlighted above. The live clocks on this page update every second, and the difference adjusts automatically when either city enters or exits daylight saving time.

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