Tokyo to Portsmouth time converter

Portsmouth is 13 hours behind Tokyo. When it is 9:00 AM in Tokyo, it is 8:00 PM (Wed, Oct 21) in Portsmouth.

Tokyo JST

Thursday, October 22, 2026

Portsmouth EDT

Wednesday, October 21, 2026

Tokyo
Japan
Thu, Oct 22
JSTUTC+9
Portsmouth
Virginia, United States
Wed, Oct 21
EDTUTC-4-13h
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 AM11:00 AM−1 day
1:00 AM12:00 PM−1 day
2:00 AM1:00 PM−1 day
3:00 AM2:00 PM−1 day
4:00 AM3:00 PM−1 day
5:00 AM4:00 PM−1 day
6:00 AM5:00 PM−1 day
7:00 AM6:00 PM−1 day
8:00 AM7:00 PM−1 day
9:00 AM8:00 PM−1 day
10:00 AM9:00 PM−1 day
11:00 AM10:00 PM−1 day
12:00 PM11:00 PM−1 day
1:00 PM12:00 AM
2:00 PM1:00 AM
3:00 PM2:00 AM
4:00 PM3:00 AM
5:00 PM4:00 AM
6:00 PM5:00 AM
7:00 PM6:00 AM
8:00 PM7:00 AM
9:00 PM8:00 AM
10:00 PM9:00 AM
11:00 PM10:00 AM

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Tokyo (8:00 PM – 10:00 PM in Portsmouth): working hours on one side, early or late on the other.

Daylight saving time and the difference

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

  • Oct 22, 2026 – Nov 1, 2026: -13h
  • Nov 1, 2026 – Mar 14, 2027: -14h
  • Mar 14, 2027 – Oct 22, 2027: -13h

Distance

Tokyo and Portsmouth are 11,136 km (6,920 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 13 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 8:00 PM (Wed, Oct 21) in Portsmouth.

When is the best time to call Portsmouth from Tokyo?

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Tokyo (8:00 PM – 10:00 PM in Portsmouth): working hours on one side, early or late on the other.

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.