London to Buenos Aires: time difference
Buenos Aires is 1 h ahead of London. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇦🇷 Buenos Aires, Argentina
28
- Argentina Standard Time
- UTC-3
- Daytime
☀️ 06:19 · 🌙 19:04 · 12 h 45 min
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
London 09:02 9:02 AM Buenos Aires 10:02 10:02 AM You –:–
09:02 9:02 AM
Eastern Daylight Time · UTC-4
☀️ 07:33 · 🌙 18:52
10:02 10:02 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
·
+1 h
Buenos Aires is 1 h ahead of London.
When you, London and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 London
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇦🇷 Buenos Aires
1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 London | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 09:02 | 10:02 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern Daylight Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from London | — | +1 h |
| IANA zone | America/Toronto | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:33 | 06:19 |
| Sunset | 18:52 | 19:04 |
| Daylight | 11 h 19 min | 12 h 45 min |
| People on this clock | 383,822 | 2,891,082 |
Compare London with another city
More comparisons with London: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
London and Buenos Aires: common questions
How far ahead of London is Buenos Aires?
Buenos Aires is 1 hour ahead of London: UTC−3 against UTC−4.
If it is 9:00 AM in London, what time is it in Buenos Aires?
At 9:00 AM in London, clocks in Buenos Aires show 10:00 AM.
If it is 6:00 PM in London, what time is it in Buenos Aires?
At 6:00 PM in London, clocks in Buenos Aires show 7:00 PM.
When is a good time to call Buenos Aires from London?
Between 9:00 AM and 5:00 PM in London – that is 10:00 AM to 6:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Buenos Aires compared with London?
The new day starts in Buenos Aires earlier: at 11:00 PM in London it is already midnight there. Until 1:00 AM in Buenos Aires, London is still on the previous day.
Does the time gap between London and Buenos Aires change during the year?
Yes – daylight saving time is used in London but not in Buenos Aires. From November 1, 2026, Buenos Aires will be 2 hours ahead of London.
