Time Difference: UK (London) vs. Los Angeles, California

The time difference between London (UK) and Los Angeles (California) is 8 hours, with Los Angeles behind London.

Standard Time (Winter: Nov-Mar)

London: GMT (UTC+0)
Los Angeles: PST (UTC-8)
Difference: 8 hours
Example: 12:00 PM London = 4:00 AM Los Angeles

Daylight Saving Time (Summer: Mar-Nov)

London: BST (UTC+1) — starts last Sunday March
Los Angeles: PDT (UTC-7) — starts second Sunday March
Difference: 8 hours (both shift forward one hour)
Example: 12:00 PM London = 4:00 AM Los Angeles

The One-Week Exception

Second Sunday March → Last Sunday March: LA springs forward first.
Difference temporarily becomes 7 hours for ~2 weeks.
Last Sunday October → First Sunday November: UK falls back first.
Difference temporarily becomes 9 hours for ~1 week.

Practical Applications

• Business Calls: 9 AM LA = 5 PM London (good); 9 AM London = 1 AM LA (bad).
• Flight Planning: LAX → LHR: ~10.5 hr flight + 8 hr loss = arrive next day afternoon. LHR → LAX: ~11 hr flight - 8 hr gain = arrive same day afternoon.
• Financial Markets: London open 8 AM = 12 AM LA. NY open 9:30 AM ET = 1:30 PM London = 5:30 AM LA.

Current Status Check

Always verify at timeanddate.com or worldtimebuddy.com — DST transition dates occasionally change by legislation.