Tokyo to Portsmouth time converter

Portsmouth is 8 hours behind Tokyo. When it is 9:00 AM in Tokyo, it is 1:00 AM in Portsmouth.

Tokyo JST

Wednesday, October 21, 2026

Portsmouth BST

Wednesday, October 21, 2026

Tokyo
Japan
Wed, Oct 21
JSTUTC+9
Portsmouth
United Kingdom
Wed, Oct 21
BSTUTC+1-8h
Finding your time zone…
Shared working hours (9:00–18:00)

Tokyo to Portsmouth conversion table

Every hour of today in Tokyo and the matching time in Portsmouth. Light rows are typical working hours (9:00–18:00).

TokyoPortsmouth
12:00 AM4:00 PM−1 day
1:00 AM5:00 PM−1 day
2:00 AM6:00 PM−1 day
3:00 AM7:00 PM−1 day
4:00 AM8:00 PM−1 day
5:00 AM9:00 PM−1 day
6:00 AM10:00 PM−1 day
7:00 AM11:00 PM−1 day
8:00 AM12:00 AM
9:00 AM1:00 AM
10:00 AM2:00 AM
11:00 AM3:00 AM
12:00 PM4:00 AM
1:00 PM5:00 AM
2:00 PM6:00 AM
3:00 PM7:00 AM
4:00 PM8:00 AM
5:00 PM9:00 AM
6:00 PM10:00 AM
7:00 PM11:00 AM
8:00 PM12:00 PM
9:00 PM1:00 PM
10:00 PM2:00 PM
11:00 PM3:00 PM

Best time to call or meet

Both sides are at work from 5:00 PM – 6:00 PM in Tokyo (9:00 AM – 10:00 AM in Portsmouth).

Daylight saving time and the difference

The difference changes during the year because Tokyo and Portsmouth switch clocks on different dates:

  • Oct 21, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Mar 28, 2027: -9h
  • Mar 28, 2027 – Oct 21, 2027: -8h

Distance

Tokyo and Portsmouth are 9,661 km (6,003 miles) apart in a straight line.

More conversions

Portsmouth to TokyoTokyo to New YorkTokyo to LondonTokyo to Los AngelesTokyo to ChicagoTokyo to TorontoTokyo to São PauloTokyo to ParisTokyo to BerlinTokyo to MoscowTokyo to DubaiTokyo to New DelhiTokyo to Bangkok
New York to PortsmouthLondon to PortsmouthLos Angeles to PortsmouthChicago to PortsmouthToronto to PortsmouthSão Paulo to PortsmouthParis to PortsmouthBerlin to PortsmouthMoscow to PortsmouthDubai to PortsmouthNew Delhi to PortsmouthBangkok to Portsmouth

Questions and answers

What is the time difference between Tokyo and Portsmouth?

Portsmouth is 8 hours behind Tokyo.

What time is it in Portsmouth when it is 9 AM in Tokyo?

When it is 9:00 AM in Tokyo, it is 1:00 AM in Portsmouth.

When is the best time to call Portsmouth from Tokyo?

Both sides are at work from 5:00 PM – 6:00 PM in Tokyo (9:00 AM – 10:00 AM in Portsmouth).

Does the time difference between Tokyo and Portsmouth change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.