Los Angeles and London sit on opposite sides of the world's entertainment and business industries. The 8-hour gap is big enough that you only get a narrow window of overlap each day — but if you know when, you can make it work. This guide covers exactly when that window is.
How the Time Difference Works
Los Angeles is in Pacific Time, eight hours behind London when both are on standard time, and still eight hours behind when both switch to summer time. The gap is stable year-round because both cities observe DST. The only complication is the two to three weeks in spring and autumn when the DST switch dates don't line up perfectly.
Los Angeles
London
Business Hours Overlap
The table below shows when typical business hours (9 AM – 6 PM) in each city overlap. Times shown are Los Angeles time, with the corresponding London time in brackets.
| Los Angeles | London | Meeting quality |
|---|---|---|
| 8:00 AM | 4:00 PM | ~ OK |
| 9:00 AM | 5:00 PM | ✓ Excellent |
| 10:00 AM | 6:00 PM | ✓ Excellent |
| 11:00 AM | 7:00 PM | ~ OK |
| 12:00 PM | 8:00 PM | ~ OK |
| 1:00 PM | 9:00 PM | Off hours |
| 2:00 PM | 10:00 PM | Off hours |
| 3:00 PM | 11:00 PM | Off hours |
| 4:00 PM | 12:00 AM (next day) | Off hours |
| 5:00 PM | 1:00 AM (next day) | Off hours |
| 6:00 PM | 2:00 AM (next day) | Off hours |
⏰ Best time to call
8:00 AM to 10:00 AM Los Angeles — this lands during London afternoon, a productive time for both sides. Alternative: 4:00 PM to 6:00 PM London for early-day calls on the London side.
DST — The Detail Most People Get Wrong
Both Los Angeles and London observe daylight saving time, but they switch on slightly different dates. For roughly two to three weeks each spring and autumn, the usual time gap is briefly off by one hour. If you're scheduling a recurring meeting or a flight, double-check the exact dates around mid-March and late October.