Time Difference Between London and San Francisco

The time difference between London and San Francisco is 7 hours. When it is 12:00 noon in London, it is 05:00 in San Francisco. London uses the Europe/London time zone (UTC+0), while San Francisco uses America/Los_Angeles (UTC-7).

Time Zone Details: London vs San Francisco

Best Time to Schedule a Call

There are 1 overlapping business hours between London and San Francisco (assuming 9:00–17:00 in each city). The ideal window for calls and meetings is:

Hour-by-Hour Time Conversion

Use this table to quickly convert any hour from London time to San Francisco time. Rows highlighted in green indicate overlapping business hours in both cities.

Daylight Saving Time (DST) Impact

San Francisco is currently observing daylight saving time, while London is on standard time. When San Francisco switches back to standard time, the difference between these two cities will shift by 1 hour.

Practical Tips for London–San Francisco Scheduling

• Video calls: Target the 1-hour overlap window listed above. Both teams will be within normal working hours.
• Email and async work: Send messages at the end of your workday so they arrive at the start of theirs. With a 7 hours offset, replies will often land by your next morning.
• Flight arrivals: A direct flight between these cities can cross 7 time zones. Factor in jet lag recovery — most travelers need roughly one day per hour of time difference to fully adjust.
• Use UTC as a neutral reference when coordinating with three or more time zones at once.

Compare London and San Francisco with Other Cities

From London

From San Francisco

Frequently Asked Questions

What is the time difference between London and San Francisco?

The time difference is 7 hours. San Francisco is 7 hours behind London.

Does the time difference change during the year?

Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.

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

The best window is between 16:00 and 17:00 London time, which corresponds to 09:00–10:00 in San Francisco. Both sides fall within normal business hours.

How do I convert London time to San Francisco time?

Subtract 7 hours from London time to get San Francisco time. Use the hour-by-hour table above for a quick reference.

Related Pages

• Current time in London — live clock, time zone details, DST status
• Current time in San Francisco — live clock, time zone details, DST status
• Time Difference Calculator — compare any two cities
• UTC+0 countries and cities
• UTC-7 countries and cities
• Current UTC Time
• All World Time Zones
• What Is a Time Zone?

For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.