Time Difference: London vs San Francisco
London
8:06:23 AM GMT
Sunday, October 25, 2026
7h
7h
San Francisco
1:06:23 AM PDT
Sunday, October 25, 2026
San Francisco is 7 hours behind London.
Quick Reference
- London
- GMT (GMT+0)
BST starts on Mar 28, 2027
- San Francisco
- PDT (GMT-7)
PST starts on Nov 1, 2026
Frequently Asked Questions
- What is the time difference between London and San Francisco?
- San Francisco is 7 hours behind London.
- When is the best time to call from London to San Francisco?
- The best time to call is during overlapping business hours (9 AM – 5 PM) in both cities. Use the interactive converter on this page to visually compare hours side by side.
- Does the time difference change with daylight saving time?
- The time difference may change when either city enters or exits daylight saving time. London uses GMT and San Francisco uses PDT.