Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between london and cst?
LONDON (London) (london) is UTC+1 and Central Standard Time (cst) is UTC-5. The difference between them is 6 hours.
Where is london used?
LONDON (London) (london) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London.
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.
How do I convert london to cst?
Use the interactive converter above. Drag the time slider to any london time and the cst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
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
London
CST (Chicago)
Overlap (2h)
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.
London6 holidays
Jul 13Battle of the Boyne
Aug 3Summer Bank Holiday
Aug 31Summer Bank Holiday
Nov 30Saint Andrew's Day
Dec 25Christmas Day
CST (Chicago)7 holidays
Jul 3Independence DaySOON
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans 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
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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.
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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.
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".