Brentwood to Buenos Aires: time difference
Buenos Aires is 4 h behind Brentwood. 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.
Brentwood 21:29 9:29 PM Buenos Aires 17:29 5:29 PM You –:–
21:29 9:29 PM
British Summer Time · UTC+1
☀️ 07:26 · 🌙 18:03
17:29 5:29 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
·
−4 h
Buenos Aires is 4 h behind Brentwood.
When you, Brentwood 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
🇬🇧 Brentwood
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 | 🇬🇧 Brentwood | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 21:29 | 17:29 |
| 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 Brentwood | — | −4 h |
| IANA zone | Europe/London | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:26 | 06:10 |
| Sunset | 18:03 | 19:10 |
| Daylight | 10 h 37 min | 13 h |
| People on this clock | 76,575 | 2,891,082 |
Compare Brentwood with another city
More comparisons with Brentwood: the time zones next to it and the far side of the clock.
Big time differences
Brentwood and Buenos Aires: common questions
How far behind Brentwood is Buenos Aires?
Buenos Aires is 4 hours behind Brentwood: UTC−3 against UTC+1.
If it is 9:00 AM in Brentwood, what time is it in Buenos Aires?
At 9:00 AM in Brentwood, clocks in Buenos Aires show 5:00 AM.
What time is it in Buenos Aires at the end of the working day in Brentwood?
The working day in Brentwood ends at 6:00 PM; in Buenos Aires it is 2:00 PM at that moment.
Is there a time when both Brentwood and Buenos Aires are at work?
Yes: from 1:00 PM to 6:00 PM in Brentwood (9:00 AM to 2:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Brentwood is it still yesterday in Buenos Aires?
Before 4:00 AM in Brentwood, the date in Buenos Aires has not changed yet. From 8:00 PM in Buenos Aires, it is already the next day in Brentwood.
Does the time difference between Brentwood and Buenos Aires change?
Yes. The clocks change only in Brentwood. From October 25, 2026, Buenos Aires will be 3 hours behind Brentwood.
