London to Simi Valley time converter

Simi Valley is 8 hours behind London. When it is 9:00 AM in London, it is 1:00 AM in Simi Valley.

London BST

Monday, October 19, 2026

Simi Valley PDT

Monday, October 19, 2026

London
United Kingdom
Mon, Oct 19
BSTUTC+1
Simi Valley
California, United States
Mon, Oct 19
PDTUTC-7-8h
Finding your time zone…
Shared working hours (9:00–18:00)

London to Simi Valley conversion table

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

LondonSimi Valley
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 London (9:00 AM – 10:00 AM in Simi Valley).

Daylight saving time and the difference

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

  • Oct 19, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Nov 1, 2026: -7h
  • Nov 1, 2026 – Mar 14, 2027: -8h
  • Mar 14, 2027 – Mar 28, 2027: -7h
  • Mar 28, 2027 – Oct 19, 2027: -8h

Distance

London and Simi Valley are 8,763 km (5,445 miles) apart in a straight line.

More conversions

Simi Valley to LondonLondon to New YorkLondon to Los AngelesLondon to ChicagoLondon to TorontoLondon to São PauloLondon to ParisLondon to BerlinLondon to MoscowLondon to DubaiLondon to New DelhiLondon to BangkokLondon to Singapore
New York to Simi ValleyLos Angeles to Simi ValleyChicago to Simi ValleyToronto to Simi ValleySão Paulo to Simi ValleyParis to Simi ValleyBerlin to Simi ValleyMoscow to Simi ValleyDubai to Simi ValleyNew Delhi to Simi ValleyBangkok to Simi ValleySingapore to Simi Valley

Questions and answers

What is the time difference between London and Simi Valley?

Simi Valley is 8 hours behind London.

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

When it is 9:00 AM in London, it is 1:00 AM in Simi Valley.

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

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

Does the time difference between London and Simi Valley change?

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