London, United Kingdom
Sat, Jul 4, 2026 15:37
- Timezone
- Europe/London
- UTC offset
- UTC+01:00
- Daylight saving
- Yes
London and San Francisco Time Difference
Compare London vs San Francisco time, current local times, UTC offset difference, daylight saving status, and the best time to plan meetings or travel.
Quick Answer
What is the time difference between London and San Francisco?
The live comparison below shows both local times, current UTC offsets, daylight saving status, and whether San Francisco is ahead of or behind London.
Current time difference
San Francisco, United States
Sat, Jul 4, 2026 07:37
- Timezone
- America/Los_Angeles
- UTC offset
- UTC-07:00
- Daylight saving
- Yes
Time difference
San Francisco is 8 hours behind London
UTC offset difference
-08:00
Suggested call window
Sat, Jul 4, 17:00-23:00 / Sat, Jul 4, 09:00-15:00
Calculated using initiator awake hours of 08:00-23:00 and recipient office hours of 09:00-18:00.
Dynamic Time Difference
London is 8 hours ahead of San Francisco
The difference changes during 2026 because London changes UTC offset during the year and San Francisco changes UTC offset during the year. Jan 1-Mar 7: London is 8 hours ahead of San Francisco; Mar 8-Mar 28: London is 7 hours ahead of San Francisco; Mar 29-Oct 24: London is 8 hours ahead of San Francisco; Oct 25-Oct 31: London is 7 hours ahead of San Francisco; Nov 1-Dec 31: London is 8 hours ahead of San Francisco.
London
UTC+01:00 · Seasonal clock changes; DST is active now
San Francisco
UTC-07:00 · Seasonal clock changes; DST is active now
Business Call Window
09:00-18:00 work-hour overlap
Both 09:00-18:00 workdays overlap. A practical window is 17:00-18:00 in London, which is 09:00-10:00 in San Francisco.
London: 17:00-18:00
San Francisco: 09:00-10:00
24-Hour Conversion Table
London to San Francisco hourly time conversion
The table uses today's active UTC offsets. Seasonal rows can shift when daylight saving time changes.
| London | San Francisco |
|---|---|
| 00:00 | 16:00 (previous day) |
| 01:00 | 17:00 (previous day) |
| 02:00 | 18:00 (previous day) |
| 03:00 | 19:00 (previous day) |
| 04:00 | 20:00 (previous day) |
| 05:00 | 21:00 (previous day) |
| 06:00 | 22:00 (previous day) |
| 07:00 | 23:00 (previous day) |
| 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 |
FAQ
What is the current time difference between London and San Francisco?
London is 8 hours ahead of San Francisco. This uses the active IANA timezone offsets for today.
When does the London-San Francisco time difference change in 2026?
The difference changes during 2026 because London changes UTC offset during the year and San Francisco changes UTC offset during the year. Jan 1-Mar 7: London is 8 hours ahead of San Francisco; Mar 8-Mar 28: London is 7 hours ahead of San Francisco; Mar 29-Oct 24: London is 8 hours ahead of San Francisco; Oct 25-Oct 31: London is 7 hours ahead of San Francisco; Nov 1-Dec 31: London is 8 hours ahead of San Francisco.
What are the current UTC offsets for London and San Francisco?
London is currently UTC+01:00; San Francisco is currently UTC-07:00.
Which direction does the clock change when flying from London to San Francisco?
Travelers from London to San Francisco move their clock back by 8 hours.
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