London to San Francisco Time

London is 8 hours ahead of San Francisco.

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Tap a city name to search and change it (partial names work). Drag the timeline (12 hours in view, scrolls forever). Keyboard: ← → , PgUp / PgDn 1 hour, Home = now.

London time to San Francisco time

London is 8 hours ahead of San Francisco. When it is 9:00 AM in London, UK, it is 1:00 AM in San Francisco, USA. Standard 9 AM to 6 PM working hours overlap for 1 hour: 5:00 PM to 6:00 PM in London (9:00 AM to 10:00 AM in San Francisco).

Time difference

8 hours (London ahead). London uses BST; San Francisco uses PDT.

Working-hours overlap

1 hour of shared 9 AM to 6 PM hours.

Daylight saving

Next change: Sun, Oct 25, 2026 (London).

London to San Francisco time conversion table

Times for Fri, Oct 9, 2026. Highlighted rows fall within 9 AM to 6 PM in both cities. Drag the live converter above for any other date.
London (BST)San Francisco (PDT)
12:00 AM4:00 PM (previous day)
1:00 AM5:00 PM (previous day)
2:00 AM6:00 PM (previous day)
3:00 AM7:00 PM (previous day)
4:00 AM8:00 PM (previous day)
5:00 AM9:00 PM (previous day)
6:00 AM10:00 PM (previous day)
7:00 AM11:00 PM (previous 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

Daylight saving time

On Sun, Oct 25, 2026, London switches from BST to GMT, so the difference becomes 7 hours (London ahead). On Sun, Nov 1, 2026, San Francisco switches from PDT to PST, so the difference becomes 8 hours (London ahead). On Sun, Mar 14, 2027, San Francisco switches from PST to PDT, so the difference becomes 7 hours (London ahead). On Sun, Mar 28, 2027, London switches from GMT to BST, so the difference becomes 8 hours (London ahead).

How to use the meeting time converter

  1. Select either city name and search by city, time zone, abbreviation, or UTC offset.
  2. Drag the horizontal timeline, or use the arrow and Page Up/Page Down keys, to choose a moment.
  3. Read the matching time and date for both locations and use the color bands to compare working hours.

Frequently asked questions

What is the time difference between London and San Francisco?

London is 8 hours ahead of San Francisco. London currently uses BST and San Francisco uses PDT.

When it is 9 AM in London, what time is it in San Francisco?

It is 1:00 AM in San Francisco.

What is the best time for a meeting between London and San Francisco?

Standard 9 AM to 6 PM working hours overlap for 1 hour: 5:00 PM to 6:00 PM in London (9:00 AM to 10:00 AM in San Francisco).

Does daylight saving time affect London and San Francisco?

On Sun, Oct 25, 2026, London switches from BST to GMT, so the difference becomes 7 hours (London ahead). On Sun, Nov 1, 2026, San Francisco switches from PDT to PST, so the difference becomes 8 hours (London ahead). On Sun, Mar 14, 2027, San Francisco switches from PST to PDT, so the difference becomes 7 hours (London ahead). On Sun, Mar 28, 2027, London switches from GMT to BST, so the difference becomes 8 hours (London ahead).

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