Chicago: Central Standard Time
Chicago, Illinois uses the America/Chicago time zone (CST).
Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−6 → UTC−5).
Chicago to London time
6 hours ahead of Chicago
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Chicago to London conversion table
For Tuesday, November 3, 2026. Rows where both places are inside 9 AM–5 PM are highlighted.
| Chicago | London |
|---|---|
| 12:00 AM | 6:00 AM |
| 1:00 AM | 7:00 AM |
| 2:00 AM | 8:00 AM |
| 3:00 AM | 9:00 AM |
| 4:00 AM | 10:00 AM |
| 5:00 AM | 11:00 AM |
| 6:00 AM | 12:00 PM |
| 7:00 AM | 1:00 PM |
| 8:00 AM | 2:00 PM |
| 9:00 AM | 3:00 PM |
| 10:00 AM | 4:00 PM |
| 11:00 AM | 5:00 PM |
| 12:00 PM | 6:00 PM |
| 1:00 PM | 7:00 PM |
| 2:00 PM | 8:00 PM |
| 3:00 PM | 9:00 PM |
| 4:00 PM | 10:00 PM |
| 5:00 PM | 11:00 PM |
| 6:00 PM | 12:00 AM (next day) |
| 7:00 PM | 1:00 AM (next day) |
| 8:00 PM | 2:00 AM (next day) |
| 9:00 PM | 3:00 AM (next day) |
| 10:00 PM | 4:00 AM (next day) |
| 11:00 PM | 5:00 AM (next day) |
About these time zones
London: Greenwich Mean Time
London, United Kingdom uses the Europe/London time zone (GMT).
Sunday, March 28, 2027: clocks go forward 1 hour at 1:00 AM local time (UTC+0 → UTC+1).
Questions about Chicago and London time
What is the time difference between Chicago and London?
The current difference is shown at the top of this page. Chicago uses Central Standard Time (CST, UTC−6) as standard time and Central Daylight Time (CDT, UTC−5) during daylight saving time; London uses Greenwich Mean Time (GMT, UTC+0) as standard time and British Summer Time (BST, UTC+1) during daylight saving time. The difference can change if only one side observes daylight saving time or if their clocks change on different dates. Choose your meeting date in the converter to check the applicable offset.
When it is 9:00 AM in Chicago, what time is it in London?
On Tuesday, November 3, 2026, 9:00 AM in Chicago was 3:00 PM in London. The conversion table above shows today’s values.
Do the clocks change in Chicago or London?
Chicago: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−6 → UTC−5). London: Sunday, March 28, 2027: clocks go forward 1 hour at 1:00 AM local time (UTC+0 → UTC+1).
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