Tokyo to Portsmouth Time Difference
Portsmouth is 8 hours behind Tokyo
24-Hour Comparison
Business hours Extended Off hours
Tokyo
02p
03p
04p
05p
06p
07p
08p
09p
10p
11p
12a
01a
02a
03a
04a
05a
06a
07a
08a
09a
10a
11a
12p
01p
Portsmouth
06a
07a
08a
09a
10a
11a
12p
01p
02p
03p
04p
05p
06p
07p
08p
09p
10p
11p
12a
01a
02a
03a
04a
05a
Each column is the same moment in both cities, starting from right now and rolling forward 24 hours — daylight saving is already accounted for.
Best Time to Call
On a typical weekday (Monday–Friday).
Tokyo and Portsmouth have little to no overlap in typical business hours (9 AM–5 PM) — an early morning or evening call works best for one side.
Frequently Asked Questions
- What is the time difference between Tokyo and Portsmouth?
- Portsmouth is 8 hours behind Tokyo. Tokyo is currently UTC+9 and Portsmouth is UTC+1.
- Is Portsmouth ahead of or behind Tokyo?
- Portsmouth is behind Tokyo.
- What is the best time to call Portsmouth from Tokyo?
- Tokyo and Portsmouth have little to no overlap in typical business hours (9 AM–5 PM), even on a weekday — an early morning or evening call works best for one side.
- Does the time difference between Tokyo and Portsmouth change during the year?
- Yes. Tokyo and Portsmouth don't switch to daylight saving time on the same schedule, so the offset shifts by up to an hour for part of the year.