🇬🇧 London ↔ 🇦🇷 Buenos Aires

London is usually 4 hours ahead of Buenos Aires. London observes daylight saving time and Buenos Aires does not, so the difference shifts by an hour around the changeovers.

Sunrise 4:45 AMSunset 9:23 PM(local)

Sunrise 8:02 AMSunset 5:52 PM(local)

London: daylight saving timeNow UTC+1. Next change: October 25, 2026 — clocks go back 1 hour.
LondonUTC+1
Buenos AiresUTC-3

🇬🇧 London

Dialing code+44
Population8,961,989
Coordinates51.51°N, 0.13°W
Elevation25 m

🇦🇷 Buenos Aires

Dialing code+54
Population2,891,082
Coordinates34.61°S, 58.38°W
Elevation31 m

Best time for a call: 13:00–18:00 in LondonAdd to calendar

Working hours assumed 9:00–18:00.

Frequently asked questions

What is the time difference between London and Buenos Aires?
London is 4 hours ahead of Buenos Aires. Use the side-by-side clocks and the day/night strips above to convert any hour between them.
When is the best time to call between London and Buenos Aires?
The best window to call is 13:00–18:00 London time, when working hours overlap in both cities. Pick an hour on the strips to add it to your calendar.
Why does the time difference between London and Buenos Aires change?
Because at least one of London and Buenos Aires observes daylight saving time, the difference shifts by an hour when one city changes its clocks and the other has not yet (or does not).