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London to Chicago time

Chicago is 5 hours behind London from March 8 to March 29 and from October 25 to November 1, and 6 hours behind the rest of 2026. Type any time below, or pick another place.

Then in Chicago
3:00 AM
Friday, November 13
6 hours behind London · CST

London to Chicago, hour by hour (Nov 13, 2026)

London GMTChicago CST
12:00 AM6:00 PMThu
1:00 AM7:00 PMThu
2:00 AM8:00 PMThu
3:00 AM9:00 PMThu
4:00 AM10:00 PMThu
5:00 AM11:00 PMThu
6:00 AM12:00 AM
7:00 AM1:00 AM
8:00 AM2:00 AM
9:00 AM3:00 AM
10:00 AM4:00 AM
11:00 AM5:00 AM
12:00 PM6:00 AM
1:00 PM7:00 AM
2:00 PM8:00 AM
3:00 PM9:00 AM
4:00 PM10:00 AM
5:00 PM11:00 AM
6:00 PM12:00 PM
7:00 PM1:00 PM
8:00 PM2:00 PM
9:00 PM3:00 PM
10:00 PM4:00 PM
11:00 PM5:00 PM

Shaded rows: 9 AM to 5 PM in both places. A weekday is shown next to times that fall on a different day. The table follows the date picked above.

When daylight saving changes the gap

2026

  • Jan 1 – Mar 8 6 hours behind London
  • Mar 8 – Mar 29 5 hours behind London
  • Mar 29 – Oct 25 6 hours behind London
  • Oct 25 – Nov 1 5 hours behind London
  • Nov 1 – Dec 31 6 hours behind London

London moves its clocks forward on March 29 (1:00 AM becomes 2:00 AM) and back on October 25 (2:00 AM becomes 1:00 AM). Chicago moves its clocks forward on March 8 (2:00 AM becomes 3:00 AM) and back on November 1 (2:00 AM becomes 1:00 AM).

2027

  • Jan 1 – Mar 14 6 hours behind London
  • Mar 14 – Mar 28 5 hours behind London
  • Mar 28 – Oct 31 6 hours behind London
  • Oct 31 – Nov 7 5 hours behind London
  • Nov 7 – Dec 31 6 hours behind London

London moves its clocks forward on March 28 (1:00 AM becomes 2:00 AM) and back on October 31 (2:00 AM becomes 1:00 AM). Chicago moves its clocks forward on March 14 (2:00 AM becomes 3:00 AM) and back on November 7 (2:00 AM becomes 1:00 AM).

London and Chicago time zones

BST (British Summer Time, UTC+1) is the UK's summer time, used from March 29 to October 25, 2026. Outside those dates the UK is on GMT (UTC+0). This page follows the clock in London, so on a winter date it converts from GMT; the result is the real UK time either way.

Here CST means US Central Time: Chicago, Dallas, Houston, Minneapolis, New Orleans and Winnipeg. That's CST (UTC−6) in winter and CDT (UTC−5) from March 8 to November 1, 2026. CST is also the abbreviation for China Standard Time (UTC+8) and Cuba Standard Time; for China, search for Beijing or "China Standard Time" in the converter.

Questions

What is the time difference between London and Chicago?

Chicago is 5 hours behind London from March 8 to March 29 and from October 25 to November 1, and 6 hours behind the rest of 2026.

What time is it in Chicago when it's 9 AM in London?

Until March 14, 2027, 9:00 AM in London is 3:00 AM in Chicago, noon in London is 6:00 AM in Chicago, and 5:00 PM in London is 11:00 AM in Chicago.

When do working hours overlap?

Until March 14, 2027, 2 hours of a 9-to-5 day overlap: 3:00 PM to 5:00 PM in London is 9:00 AM to 11:00 AM in Chicago.

Does CST mean China Standard Time here?

No. On this page CST means US Central Time (Chicago). China Standard Time is UTC+8 all year, 14 hours ahead of US Central in winter. To convert China time, type Beijing or Shanghai in the converter.

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