Portsmouth to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Portsmouth. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Portsmouth 04:01 4:01 AM Buenos Aires 05:01 5:01 AM You –:–
04:01 4:01 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
05:01 5:01 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
·
+1 h
Buenos Aires is 1 h ahead of Portsmouth.
When you, Portsmouth 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
🇩🇲 Portsmouth
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 | 🇩🇲 Portsmouth | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 04:01 | 05:01 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Portsmouth | — | +1 h |
| IANA zone | America/Dominica | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:57 | 06:19 |
| Sunset | 17:50 | 19:04 |
| Daylight | 11 h 52 min | 12 h 45 min |
| People on this clock | 3,633 | 2,891,082 |
Compare Portsmouth with another city
More comparisons with Portsmouth: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Portsmouth and Buenos Aires: common questions
What is the time difference between Portsmouth and Buenos Aires?
Buenos Aires is 1 hour ahead: it uses UTC−3, while Portsmouth is on UTC−4.
What time is it in Buenos Aires at the start of the working day in Portsmouth?
The working day in Portsmouth starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
What time is it in Buenos Aires when it is 6:00 PM in Portsmouth?
When it is 6:00 PM in Portsmouth, it is 7:00 PM in Buenos Aires.
When do working hours in Portsmouth and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Portsmouth, which is 10:00 AM to 6:00 PM in Buenos Aires.
From what time in Portsmouth is it tomorrow in Buenos Aires?
Once it is 11:00 PM in Portsmouth, the date in Buenos Aires has already changed. Until 1:00 AM in Buenos Aires, it is still the previous day in Portsmouth.
Is the time difference between Portsmouth and Buenos Aires the same all year?
Yes. Neither Portsmouth nor Buenos Aires switches to summer time, so the gap is always 1 hour.
