Portsmouth, NH to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Portsmouth, NH. 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, NH 03:30 3:30 AM Buenos Aires 04:30 4:30 AM You –:–
03:30 3:30 AM
Eastern Daylight Time · UTC-4
☀️ 07:02 · 🌙 17:55
04:30 4:30 AM
Argentina Standard Time · UTC-3
☀️ 06:07 · 🌙 19:11
·
+1 h
Buenos Aires is 1 h ahead of Portsmouth, NH.
When you, Portsmouth, NH 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, NH
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
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Time zones side by side
| Detail | 🇺🇸 Portsmouth, NH | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 03:30 | 04:30 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Eastern Daylight Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Portsmouth, NH | — | +1 h |
| IANA zone | America/New York | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:02 | 06:07 |
| Sunset | 17:55 | 19:11 |
| Daylight | 10 h 54 min | 13 h 4 min |
| People on this clock | 95,535 | 2,891,082 |
Compare Portsmouth, NH with another city
More comparisons with Portsmouth, NH: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Portsmouth, NH and Buenos Aires: common questions
How far ahead of Portsmouth, NH, is Buenos Aires?
Buenos Aires is 1 hour ahead of Portsmouth: UTC−3 against UTC−4.
What time is it in Buenos Aires when it is 9:00 AM in Portsmouth, NH?
When it is 9:00 AM in Portsmouth, it is 10:00 AM in Buenos Aires.
If it is 6:00 PM in Portsmouth, NH, what time is it in Buenos Aires?
At 6:00 PM in Portsmouth, clocks in Buenos Aires show 7:00 PM.
Is there a time when both Portsmouth, NH, and Buenos Aires are at work?
Yes: from 9:00 AM to 5:00 PM in Portsmouth (10:00 AM to 6:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Buenos Aires compared with Portsmouth, NH?
The new day starts in Buenos Aires earlier: at 11:00 PM in Portsmouth it is already midnight there. Until 1:00 AM in Buenos Aires, Portsmouth is still on the previous day.
Is the time difference between Portsmouth, NH, and Buenos Aires the same all year?
No. Only Portsmouth switches to summer time, so the gap changes twice a year. From November 1, 2026, Buenos Aires will be 2 hours ahead of Portsmouth.
