Time difference between London and San Francisco
San Francisco is currently 8 hours behind London. Their working days do not overlap at all, so one side has to step outside office hours. The table below shows the hours side by side.
National conventions are the default and the public figure. Change them here for your own answer — the chart, the window and the calendar file all follow.
Not on that day. Sunday is a rest day in both London and San Francisco. The hours above are what you would share on a day you are both at work.
09:00 London At work = 01:00 San Francisco Asleep
Tap any hour to read it in both cities.
The difference changes twice a year
London and San Francisco do not change their clocks on the same dates, so a standing meeting moves by an hour in these weeks.
- 25 October – 31 October −7 h
- 14 March – 27 March −7 h
- usually −8 h
Days when one side is not at work
A public holiday is not a time-zone fact, so no converter shows it — but it is the same question.
- 12 October — Columbus Day San Francisco off
- 11 November — Veterans Day San Francisco off
- 26 November — Thanksgiving Day San Francisco off
- 28 December — Boxing Day (substitute day) London off
- 18 January — Martin Luther King Jr. Day San Francisco off
Hour by hour
| London | San Francisco | |
|---|---|---|
| 00:00 | 16:00 | |
| 01:00 | 17:00 | |
| 02:00 | 18:00 | |
| 03:00 | 19:00 | |
| 04:00 | 20:00 | |
| 05:00 | 21:00 | |
| 06:00 | 22:00 | |
| 07:00 | 23:00 | |
| 08:00 | 00:00 | |
| 09:00 | 01:00 | |
| 10:00 | 02:00 | |
| 11:00 | 03:00 | |
| 12:00 | 04:00 | |
| 13:00 | 05:00 | |
| 14:00 | 06:00 | |
| 15:00 | 07:00 | |
| 16:00 | 08:00 | |
| 17:00 | 09:00 | |
| 18:00 | 10:00 | |
| 19:00 | 11:00 | |
| 20:00 | 12:00 | |
| 21:00 | 13:00 | |
| 22:00 | 14:00 | |
| 23:00 | 15:00 |
The difference adjusts automatically for daylight saving in both London and San Francisco.
The working week
- London
- 09:00 to 17:00, Monday, Tuesday, Wednesday, Thursday, Friday.
- San Francisco
- 09:00 to 17:00, Monday, Tuesday, Wednesday, Thursday, Friday.
Sources and last check
Times, offsets and sun positions on this page are computed live from the IANA timezone database and the NOAA solar algorithm, so they do not depend on the review dates below.
- Working hours and weekend days for 55 countries
- Source: Published national labour conventions and government working-hours guidance. Last checked, reviewed every 12 months.
Not covered:A national convention, not any given employer. Countries not listed fall back to a nine-to-five, Monday to Friday default, and pages say so rather than implying we checked.
FAQ
How many hours between London and San Francisco?
San Francisco is 8 hours behind London (-8 hours).
When is the best time for a meeting?
There is no time that suits both: London works 09:00–17:00 and San Francisco works 09:00–17:00 locally, and those never coincide. Someone has to take the call outside office hours.