Portsmouth to London time converter

London is 5 hours ahead of Portsmouth. When it is 9:00 AM in Portsmouth, it is 2:00 PM in London.

Portsmouth EDT

Wednesday, October 21, 2026

London BST

Wednesday, October 21, 2026

Portsmouth
Ohio, United States
Wed, Oct 21
EDTUTC-4
London
United Kingdom
Wed, Oct 21
BSTUTC+1+5h
Finding your time zone…
Shared working hours (9:00–18:00)

Portsmouth to London conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 1:00 PM in Portsmouth (2:00 PM – 6:00 PM in London).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Oct 24, 2026: +5h
  • Oct 24, 2026 – Nov 1, 2026: +4h
  • Nov 1, 2026 – Mar 14, 2027: +5h
  • Mar 14, 2027 – Mar 27, 2027: +4h
  • Mar 27, 2027 – Oct 21, 2027: +5h

Distance

Portsmouth and London are 6,298 km (3,913 miles) apart in a straight line.

More conversions

London to PortsmouthPortsmouth to New YorkPortsmouth to Los AngelesPortsmouth to ChicagoPortsmouth to TorontoPortsmouth to São PauloPortsmouth to ParisPortsmouth to BerlinPortsmouth to MoscowPortsmouth to DubaiPortsmouth to New DelhiPortsmouth to BangkokPortsmouth to Singapore
New York to LondonLos Angeles to LondonChicago to LondonToronto to LondonSão Paulo to LondonParis to LondonBerlin to LondonMoscow to LondonDubai to LondonNew Delhi to LondonBangkok to LondonSingapore to London

Questions and answers

What is the time difference between Portsmouth and London?

London is 5 hours ahead of Portsmouth.

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

When it is 9:00 AM in Portsmouth, it is 2:00 PM in London.

When is the best time to call London from Portsmouth?

Both sides are at work from 9:00 AM – 1:00 PM in Portsmouth (2:00 PM – 6:00 PM in London).

Does the time difference between Portsmouth and London change?

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