London to CST (Chicago) — exact time difference
London is 6 hours ahead of CST (Chicago). Midday in London lines up with 06:00 in CST (Chicago).
London runs on Europe/London; CST (Chicago) runs on America/Chicago. Together they are 6 hours apart.
Working hours overlap
There is a 2-hour window each day where both London and CST (Chicago) are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
Best times to schedule a meeting
There is a 2-hour daily window where both locations are in business hours.
15:00 London / 09:00 Chicago✓ Both working
16:00 London / 10:00 Chicago✓ Both working
Working hours defined as 09:00–17:00 local time for each location.
Upcoming public holidays
⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.
London3 holidays
Nov 30Saint Andrew's Day
Dec 25Christmas Day
Dec 28St. Stephen's Day
CST (Chicago)3 holidays
Nov 11Veterans Day
Nov 26Thanksgiving Day
Dec 25Christmas Day
How to work with London and CST (Chicago) time zones
The 6-hour gap between London (United Kingdom) and CST (Chicago) (USA) requires some planning — but a 2-hour daily overlap means both teams can connect in real time without unusual scheduling.
💡 How to schedule across these time zones
✅If you are in London, aim for 15:00–16:00, which corresponds to 09:00–10:00 in CST (Chicago) — both teams are within working hours.
✅If you are in London, aim for 16:00–17:00, which corresponds to 10:00–11:00 in CST (Chicago) — both teams are within working hours.
Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.
Add to your browser — Free →Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am London".