Castro Valley to London time converter

London is 8 hours ahead of Castro Valley. When it is 9:00 AM in Castro Valley, it is 5:00 PM in London.

Castro Valley PDT

Tuesday, October 20, 2026

London BST

Tuesday, October 20, 2026

Castro Valley
California, United States
Tue, Oct 20
PDTUTC-7
London
United Kingdom
Tue, Oct 20
BSTUTC+1+8h
Finding your time zone…
Shared working hours (9:00–18:00)

Castro Valley to London conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Castro Valley (5:00 PM – 6:00 PM in London).

Daylight saving time and the difference

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

  • Oct 20, 2026 – Oct 24, 2026: +8h
  • Oct 24, 2026 – Nov 1, 2026: +7h
  • Nov 1, 2026 – Mar 14, 2027: +8h
  • Mar 14, 2027 – Mar 27, 2027: +7h
  • Mar 27, 2027 – Oct 20, 2027: +8h

Distance

Castro Valley and London are 8,608 km (5,349 miles) apart in a straight line.

More conversions

London to Castro ValleyCastro Valley to New YorkCastro Valley to Los AngelesCastro Valley to ChicagoCastro Valley to TorontoCastro Valley to São PauloCastro Valley to ParisCastro Valley to BerlinCastro Valley to MoscowCastro Valley to DubaiCastro Valley to New DelhiCastro Valley to BangkokCastro Valley 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 Castro Valley and London?

London is 8 hours ahead of Castro Valley.

What time is it in London when it is 9 AM in Castro Valley?

When it is 9:00 AM in Castro Valley, it is 5:00 PM in London.

When is the best time to call London from Castro Valley?

Both sides are at work from 9:00 AM – 10:00 AM in Castro Valley (5:00 PM – 6:00 PM in London).

Does the time difference between Castro Valley 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.