Cardiff to Buenos Aires: time difference
Buenos Aires is 4 h behind Cardiff. Live clocks for both, the working hours they share, and how each one sits against your own time.
−4 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Cardiff 02:35 2:35 AM Buenos Aires 22:35 10:35 PM You –:–
02:35 2:35 AM
British Summer Time · UTC+1
☀️ 07:28 · 🌙 18:33
22:35 10:35 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−4 h
Buenos Aires is 4 h behind Cardiff.
When you, Cardiff 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
🇬🇧 Cardiff
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
20 8 PM 21 9 PM 22 10 PM 23 11 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇧 Cardiff | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 02:35 | 22:35 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 2026 |
| Time zone | British Summer Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Cardiff | — | −4 h |
| IANA zone | Europe/London | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:28 | 06:20 |
| Sunset | 18:33 | 19:03 |
| Daylight | 11 h 4 min | 12 h 43 min |
| People on this clock | 346,100 | 2,891,082 |
Compare Cardiff with another city
More comparisons with Cardiff: the time zones next to it and the far side of the clock.
Big time differences
Cardiff and Buenos Aires: common questions
How far behind Cardiff is Buenos Aires?
Buenos Aires is 4 hours behind Cardiff: UTC−3 against UTC+1.
If it is 9:00 AM in Cardiff, what time is it in Buenos Aires?
At 9:00 AM in Cardiff, clocks in Buenos Aires show 5:00 AM.
What time is it in Buenos Aires when it is 6:00 PM in Cardiff?
When it is 6:00 PM in Cardiff, it is 2:00 PM in Buenos Aires.
When do working hours in Cardiff and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 1:00 PM to 6:00 PM in Cardiff, which is 9:00 AM to 2:00 PM in Buenos Aires.
Until what time in Cardiff is it still yesterday in Buenos Aires?
Before 4:00 AM in Cardiff, the date in Buenos Aires has not changed yet. From 8:00 PM in Buenos Aires, it is already the next day in Cardiff.
Does the time gap between Cardiff and Buenos Aires change during the year?
Yes – daylight saving time is used in Cardiff but not in Buenos Aires. From October 25, 2026, Buenos Aires will be 3 hours behind Cardiff.
