Rockville, MD to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Rockville, MD. 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.
Rockville, MD 22:01 10:01 PM Buenos Aires 23:01 11:01 PM You –:–
22:01 10:01 PM
Eastern Daylight Time · UTC-4
☀️ 07:15 · 🌙 18:37
23:01 11:01 PM
Argentina Standard Time · UTC-3
☀️ 06:18 · 🌙 19:05
·
+1 h
Buenos Aires is 1 h ahead of Rockville, MD.
When you, Rockville, MD 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
🇺🇸 Rockville, MD
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 | 🇺🇸 Rockville, MD | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 22:01 | 23:01 |
| Local date | Sunday, October 11, 2026 | Sunday, October 11, 2026 |
| Time zone | Eastern Daylight Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Rockville, MD | — | +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 | 07:15 | 06:18 |
| Sunset | 18:37 | 19:05 |
| Daylight | 11 h 23 min | 12 h 47 min |
| People on this clock | 67,139 | 2,891,082 |
Compare Rockville, MD with another city
More comparisons with Rockville, MD: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Rockville, MD and Buenos Aires: common questions
What is the time difference between Rockville, MD, and Buenos Aires?
Buenos Aires is 1 hour ahead: it uses UTC−3, while Rockville is on UTC−4.
If it is 9:00 AM in Rockville, MD, what time is it in Buenos Aires?
At 9:00 AM in Rockville, clocks in Buenos Aires show 10:00 AM.
What time is it in Buenos Aires when it is 6:00 PM in Rockville, MD?
When it is 6:00 PM in Rockville, it is 7:00 PM in Buenos Aires.
When is a good time to call Buenos Aires from Rockville, MD?
Between 9:00 AM and 5:00 PM in Rockville – that is 10:00 AM to 6:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Buenos Aires compared with Rockville, MD?
The new day starts in Buenos Aires earlier: at 11:00 PM in Rockville it is already midnight there. Until 1:00 AM in Buenos Aires, Rockville is still on the previous day.
Does the time gap between Rockville, MD, and Buenos Aires change during the year?
Yes – daylight saving time is used in Rockville but not in Buenos Aires. From November 1, 2026, Buenos Aires will be 2 hours ahead of Rockville.
