Session overlap · Japan Standard Time
HKEX & SGX overlap hoursin Tokyo time
Both exchanges are open at the same time between 10:30 and 17:00 Tokyo time, a 6h 30m shared window. HKEX trades 18:30–01:00 and SGX trades 18:00–02:00 in Tokyo time. Both run Monday to Friday, so the overlap occurs on weekdays only.
- 10:30
- Overlap starts (Tokyo)
- 17:00
- Overlap ends (Tokyo)
- 6h 30m
- Shared trading time
Overlap window in Tokyo
10:30–17:00
Japan Standard TimeTimes assume the exchanges’ regular sessions and are converted from exchange local time to Japan Standard Time; holidays and early closes can remove the overlap on a given day.
| Market | Open (Japan Standard Time) | Close (Japan Standard Time) |
|---|---|---|
| HKEX | 18:30 | 01:00 |
| SGX | 18:00 | 02:00 |
How the HKEX–SGX overlap is calculated
The overlap is the intersection of each exchange’s regular trading session after converting both to Japan Standard Time. In this timezone, HKEX runs 18:30–01:00 and SGX runs 18:00–02:00, so both are open together from 10:30 to 17:00 — 6h 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.