Session overlap · London Time
LSE & EURONEXT overlap hoursin London time
Both exchanges are open at the same time between 08:00 and 16:30 London time, a 8h 30m shared window. LSE trades 08:00–16:30 and EURONEXT trades 09:00–17:30 in London time. Both run Monday to Friday, so the overlap occurs on weekdays only.
- 08:00
- Overlap starts (London)
- 16:30
- Overlap ends (London)
- 8h 30m
- Shared trading time
Overlap window in London
08:00–16:30
London TimeTimes assume the exchanges’ regular sessions and are converted from exchange local time to London Time; holidays and early closes can remove the overlap on a given day.
| Market | Open (London Time) | Close (London Time) |
|---|---|---|
| LSE | 08:00 | 16:30 |
| EURONEXT | 09:00 | 17:30 |
How the LSE–EURONEXT overlap is calculated
The overlap is the intersection of each exchange’s regular trading session after converting both to London Time. In this timezone, LSE runs 08:00–16:30 and EURONEXT runs 09:00–17:30, so both are open together from 08:00 to 16:30 — 8h 30m of shared trading time.
Weekends are excluded, and any full-day holiday or early close on either side shrinks the window for that date. Use the two holiday calendars below before planning a session that relies on the overlap, and check the live open/closed status if you need the current figure rather than the scheduled one.