Herndon, VA to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Herndon, VA. 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.
Herndon, VA 02:05 2:05 AM Buenos Aires 03:05 3:05 AM You –:–
02:05 2:05 AM
Eastern Daylight Time · UTC-4
☀️ 07:23 · 🌙 18:28
03:05 3:05 AM
Argentina Standard Time · UTC-3
☀️ 06:09 · 🌙 19:11
·
+1 h
Buenos Aires is 1 h ahead of Herndon, VA.
When you, Herndon, VA 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
🇺🇸 Herndon, VA
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 | 🇺🇸 Herndon, VA | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 02:05 | 03:05 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Herndon, VA | — | +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 | 07:23 | 06:09 |
| Sunset | 18:28 | 19:11 |
| Daylight | 11 h 6 min | 13 h 2 min |
| People on this clock | 24,655 | 2,891,082 |
Compare Herndon, VA with another city
More comparisons with Herndon, VA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Herndon, VA and Buenos Aires: common questions
What is the time difference between Herndon, VA, and Buenos Aires?
Buenos Aires is 1 hour ahead: it uses UTC−3, while Herndon is on UTC−4.
What time is it in Buenos Aires at the start of the working day in Herndon, VA?
The working day in Herndon 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 Herndon, VA?
When it is 6:00 PM in Herndon, it is 7:00 PM in Buenos Aires.
When do working hours in Herndon, VA, and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Herndon, which is 10:00 AM to 6:00 PM in Buenos Aires.
When does the date change in Buenos Aires compared with Herndon, VA?
The new day starts in Buenos Aires earlier: at 11:00 PM in Herndon it is already midnight there. Until 1:00 AM in Buenos Aires, Herndon is still on the previous day.
Does the time gap between Herndon, VA, and Buenos Aires change during the year?
Yes – daylight saving time is used in Herndon but not in Buenos Aires. From November 1, 2026, Buenos Aires will be 2 hours ahead of Herndon.
