Westminster to Buenos Aires: time difference
Buenos Aires is 4 h behind Westminster. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Westminster 20:03 8:03 PM Buenos Aires 16:03 4:03 PM You –:–
20:03 8:03 PM
British Summer Time · UTC+1
☀️ 07:28 · 🌙 18:05
16:03 4:03 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
·
−4 h
Buenos Aires is 4 h behind Westminster.
When you, Westminster 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
🇬🇧 Westminster
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 | 🇬🇧 Westminster | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 20:03 | 16:03 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | British Summer Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Westminster | — | −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 | 06:10 |
| Sunset | 18:05 | 19:10 |
| Daylight | 10 h 37 min | 13 h |
| People on this clock | 247,614 | 2,891,082 |
Compare Westminster with another city
More comparisons with Westminster: the time zones next to it and the far side of the clock.
Big time differences
Westminster and Buenos Aires: common questions
How many hours behind Westminster is Buenos Aires?
The clocks in Buenos Aires are 4 hours behind those in Westminster (UTC−3 and UTC+1).
If it is 9:00 AM in Westminster, what time is it in Buenos Aires?
At 9:00 AM in Westminster, clocks in Buenos Aires show 5:00 AM.
If it is 6:00 PM in Westminster, what time is it in Buenos Aires?
At 6:00 PM in Westminster, clocks in Buenos Aires show 2:00 PM.
When do working hours in Westminster and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 1:00 PM to 6:00 PM in Westminster, which is 9:00 AM to 2:00 PM in Buenos Aires.
When does the date change in Buenos Aires compared with Westminster?
The new day starts in Buenos Aires later: until 4:00 AM in Westminster, it is still the previous day there. From 8:00 PM in Buenos Aires, Westminster is already on the next day.
Does the time difference between Westminster and Buenos Aires change?
Yes. The clocks change only in Westminster. From October 25, 2026, Buenos Aires will be 3 hours behind Westminster.
