Time Difference: Los Angeles and London
London is 8 hours ahead of Los Angeles for most of the year. 9:00 AM in Los Angeles is 5:00 PM in London, or 4:00 PM in the few weeks when the gap is 7 hours.
Daylight saving note: London is 8 hours ahead of Los Angeles in winter and in summer. For a few weeks in March and about a week in late October the gap is 7 hours, because the US and the UK change clocks on different dates.
Los Angeles Looking Across to London
From Los Angeles, London is eight hours ahead when both are in the same season, and seven hours ahead when only the US has changed. Add 8 to a Los Angeles time to get London: 8:00 AM in Los Angeles is 4:00 PM.
The 7-hour windows come from the different change dates. The US moves forward on the second Sunday in March, before the UK does on the last Sunday in March, and the UK moves back on the last Sunday in October, before the US does on the first Sunday in November.
That makes a Los Angeles morning London's afternoon or evening. 10:00 AM in Los Angeles is 6:00 PM in London in most weeks and 5:00 PM in the 7-hour windows.
Los Angeles to London Conversion Table
Each column is one real season of the Los Angeles-London gap. Pick the column that matches your date.
| 🇺🇸 Los Angeles (PT) | 🇬🇧 London (PST → GMT) | 🇬🇧 London (PDT → BST) | 🇬🇧 London (PDT → GMT) |
|---|---|---|---|
| 00:00 | 08:00 | 08:00 | 07:00 |
| 03:00 | 11:00 | 11:00 | 10:00 |
| 06:00 | 14:00 | 14:00 | 13:00 |
| 09:00 | 17:00 | 17:00 | 16:00 |
| 12:00 | 20:00 | 20:00 | 19:00 |
| 15:00 | 23:00 | 23:00 | 22:00 |
| 18:00 | 02:00(next day) | 02:00(next day) | 01:00(next day) |
| 21:00 | 05:00(next day) | 05:00(next day) | 04:00(next day) |
- PST → GMT: first Sunday in November to second Sunday in March, while both are on standard time
- PDT → BST: last Sunday in March to last Sunday in October, while both are on summer time
- PDT → GMT: a few weeks from the second Sunday in March, and about a week from the last Sunday in October, when only the US is on summer time
* "next day" / "prev day" = the converted time falls on a different calendar date.
Los Angeles Mornings, London Evenings
A strict 9-to-5 day on each side barely overlaps. 9:00 AM in Los Angeles is 5:00 PM in London, which is exactly London's 5:00 PM close. The practical slot is a very early Los Angeles start: 6:00 to 8:00 AM in Los Angeles is 2:00 PM to 4:00 PM in London, the afternoon.
Avoiding Los Angeles-London Time Mistakes
London is ahead, so a late evening in Los Angeles is already the next calendar day in London. With a 8 hours gap, that starts at 4:00 PM in Los Angeles: 4:30 PM there is 12:30 AM the next day in London. When the gap narrows to 7 hours, the date line moves to 5:00 PM.
Don't assume 8 hours in the short windows. A fixed 8:00 AM Los Angeles call is 4:00 PM in London most weeks and 3:00 PM in the 7-hour windows. Going the other way, London's 9:00 AM is 1:00 AM in Los Angeles in most weeks.
A Worked Example: A Very Early Los Angeles Start for London
Say a Los Angeles manager calls London at 7:00 AM Pacific. That's 3:00 PM in London in most weeks and 2:00 PM in the 7-hour windows. A 6:30 AM Pacific start is 2:30 PM.
If London hosts at 3:00 PM, Los Angeles joins at 7:00 AM in most weeks and 8:00 AM in the short windows.
Frequently Asked Questions
What is the time difference between Los Angeles and London?
London is 8 hours ahead of Los Angeles for most of the year. For a few weeks in March and about a week in late October the gap is 7 hours.
What time is 9 AM Los Angeles in London?
5:00 PM in London in most weeks, and 4:00 PM in the 7-hour windows.
Why is the Los Angeles-London gap sometimes 7 hours?
The US and the UK change clocks on different dates, so for a few weeks in March and one week in October only one side is on summer time.
What is the best time for a Los Angeles-London call?
Very early in Los Angeles. 6:00 to 8:00 AM is 2:00 PM to 4:00 PM in London, the last part of the London day.