Time difference between London and San Francisco

San Francisco is 8 hours behind London.

United Kingdom · British Summer Time

8:47 AM

Wednesday, October 21, 2026

United States · Pacific Daylight Time

12:47 AM

Wednesday, October 21, 2026

London to San Francisco time converter

Green rows are office hours in both places; light green rows are when both are awake.

What is the time difference between London and San Francisco?

San Francisco is 8 hours behind London. London is on UTC+1 and San Francisco is on UTC−7.

What time is it in San Francisco when it is 9 AM in London?

When it is 9:00 AM in London, it is 1:00 AM in San Francisco.

When is the best time to call San Francisco from London?

The best time to call or meet is 5:00 PM–6:00 PM in London (9:00 AM–10:00 AM in San Francisco), when both places are in normal office hours.

Does the time difference between London and San Francisco change?

Yes. Because of daylight saving time, the difference changes on Sunday, October 25, 2026, when San Francisco will be 7 hours behind London.

London is 8 hours ahead of San Francisco. More: time in London · time in San Francisco