Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between cst and london?
Central Standard Time (cst) is UTC-5 and LONDON (London) (london) is UTC+1. The difference between them is 6 hours.
Where is cst used?
Central Standard Time (cst) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago. Note: cst is ambiguous and may refer to other timezones.
Where is london used?
LONDON (London) (london) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London.
How do I convert cst to london?
Use the interactive converter above. Drag the time slider to any cst time and the london equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
CST (Chicago) is 6 hours behind London. When CST (Chicago) clocks hit noon, London reads 18:00.
CST (Chicago) runs on America/Chicago; London runs on Europe/London. Together they are 6 hours apart.
Shared working hours
Every working day, CST (Chicago) and London are both in business hours for 2 hours simultaneously.
00:0006:0012:0018:0024:00
CST (Chicago)
London
Overlap (2h)
Best times to schedule a meeting
There is a 2-hour daily window where both locations are in business hours.
09:00 Chicago / 15:00 London✓ Both working
10:00 Chicago / 16:00 London✓ Both working
Working hours defined as 09:00–17:00 local time for each location.
Holiday calendar for both locations
⚡ Both locations have upcoming holidays, check availability before scheduling.
CST (Chicago)7 holidays
Jul 3Independence DaySOON
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans Day
London6 holidays
Jul 13Battle of the Boyne
Aug 3Summer Bank Holiday
Aug 31Summer Bank Holiday
Nov 30Saint Andrew's Day
Dec 25Christmas Day
Working across CST (Chicago) and London
The 6-hour gap between CST (Chicago) (USA) and London (United Kingdom) requires some planning — but a 2-hour daily overlap means both teams can connect in real time without unusual scheduling.
💡 Best practice for cross-timezone meetings
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If you are in CST (Chicago), aim for 09:00–10:00, which corresponds to 15:00–16:00 in London — both teams are within working hours.
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If you are in CST (Chicago), aim for 10:00–11:00, which corresponds to 16:00–17:00 in London — 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.
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 CST (Chicago)".