Time Difference: London to San Diego
Click a time to convert
London vs San Diego timezone guide
London (UK) uses the Europe/London timezone at UTC+0, while San Diego (US) uses America/Los_Angeles at UTC-8. This means San Diego is 8 hours behind London (based on standard offsets — the live difference above accounts for daylight saving time).
Best meeting times between London and San Diego
Standard 9-to-5 working hours in London and San Diego do not overlap. To meet synchronously, one side will need to start early or stay late — see the hour-by-hour planner below for the least disruptive options.
Hour-by-hour planner
| London | San Diego | Status |
|---|---|---|
| 6am | 10pm | London early, San Diego late evening |
| 7am | 11pm | London early, San Diego late evening |
| 8am | 12am | London early, San Diego asleep |
| 9am | 1am | London working hours, San Diego asleep |
| 10am | 2am | London working hours, San Diego asleep |
| 11am | 3am | London working hours, San Diego asleep |
| 12pm | 4am | London working hours, San Diego asleep |
| 1pm | 5am | London working hours, San Diego asleep |
| 2pm | 6am | One side outside 9-to-5 but still awake |
| 3pm | 7am | One side outside 9-to-5 but still awake |
| 4pm | 8am | One side outside 9-to-5 but still awake |
| 5pm | 9am | One side outside 9-to-5 but still awake |
| 6pm | 10am | One side outside 9-to-5 but still awake |
| 7pm | 11am | One side outside 9-to-5 but still awake |
| 8pm | 12pm | One side outside 9-to-5 but still awake |
| 9pm | 1pm | One side outside 9-to-5 but still awake |
| 10pm | 2pm | London late evening, San Diego working hours |
Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.
Daylight saving time between London and San Diego
Both cities observe daylight saving time, but on different schedules. This creates short windows each year where the usual difference of 8 hours ahead temporarily shifts.
- Mar 8 → Mar 29Difference temporarily 7 hours ahead.
- Oct 25 → Nov 1Difference temporarily 7 hours ahead.
London transitions on March 29, 2026 and October 25, 2026. San Diego transitions on March 8, 2026 and November 1, 2026.
Distance between London and San Diego
London and San Diego are 8,822 km apart along the great-circle route. A direct flight takes roughly ~11h 23m, depending on aircraft type, winds, and routing.