Session overlap · London Time
SSE & HKEX overlap hoursin London time
Both exchanges are open at the same time between 01:30 and 07:00 London time, a 5h 30m shared window. SSE trades 09:30–15:00 and HKEX trades 09:30–16:00 in London time. Both run Monday to Friday, so the overlap occurs on weekdays only.
- 01:30
- Overlap starts (London)
- 07:00
- Overlap ends (London)
- 5h 30m
- Shared trading time
Overlap window in London
01:30–07:00
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) |
|---|---|---|
| SSE | 09:30 | 15:00 |
| HKEX | 09:30 | 16:00 |
How the SSE–HKEX overlap is calculated
The overlap is the intersection of each exchange’s regular trading session after converting both to London Time. In this timezone, SSE runs 09:30–15:00 and HKEX runs 09:30–16:00, so both are open together from 01:30 to 07:00 — 5h 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.