London to San Diego Time Difference

San Diego is 8 hours behind London. Standard 9 AM–5 PM business hours in London and San Diego do not overlap, so a live call needs one side outside normal hours. Clocks change on October 25, 2026, which briefly shifts the gap between London and San Diego — the converter on this page always reflects the correct offset for the date you pick.

• When it's 9:00 AM in London, it's 1:00 AM in San Diego.
• When it's 9:00 AM in San Diego, it's 5:00 PM in London.

San Diego is currently 8 hours behind London.

Standard 9 AM – 5 PM hours in London and San Diego do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in London, or a 6–8 PM meeting in San Diego.

On October 25, 2026, London shifts for daylight saving. After that, San Diego will be 7 hours behind London (currently 8 hours behind London). The converter and the tables above always reflect the correct offset for the date you pick.

• London is currently observing daylight saving time.
• San Diego is currently observing daylight saving time.

Frequently asked questions

Is San Diego ahead of or behind London?

San Diego is 8 hours behind London.

How many hours behind London is San Diego?

San Diego is 8 hours behind London.

What time is 9 AM in London in San Diego?

9:00 AM in London is 1:00 AM in San Diego.

What time is noon in London in San Diego?

12:00 PM in London is 4:00 AM in San Diego.

What time is 5 PM in London in San Diego?

5:00 PM in London is 9:00 AM in San Diego. Useful for end-of-day handoffs between the two offices.

What time is 3 PM in London in San Diego?

3:00 PM in London is 7:00 AM in San Diego.

Is London currently observing daylight saving time?

London is currently observing daylight saving time (summer time).

Is San Diego currently observing daylight saving time?

San Diego is currently observing daylight saving time (summer time).

Do London and San Diego observe daylight saving?

On October 25, 2026, London shifts for daylight saving. After that, San Diego will be 7 hours behind London (currently 8 hours behind London). The converter and the tables above always reflect the correct offset for the date you pick.

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

London and San Diego business hours don't overlap. The closest options are early mornings in London or late evenings, when one side stretches outside 9–5.

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

San Diego and London business hours don't overlap. The closest options are early mornings in San Diego or late evenings, when one side stretches outside 9–5.

London (BST) to San Diego (PDT) — how do I convert quickly?

Subtract 8 hours from London local time to get San Diego local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.

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