Buenos Aires to Rockville, MD: time difference
Rockville, MD is 1 h behind Buenos Aires. 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.
Buenos Aires 00:10 12:10 AM Rockville, MD 23:10 11:10 PM You –:–
00:10 12:10 AM
Argentina Standard Time · UTC-3
☀️ 06:18 · 🌙 19:05
23:10 11:10 PM
Eastern Daylight Time · UTC-4
☀️ 07:15 · 🌙 18:37
·
−1 h
Rockville, MD is 1 h behind Buenos Aires.
When you, Buenos Aires and Rockville, MD are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇦🇷 Buenos Aires
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
🇺🇸 Rockville, MD
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 20 8 PM 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇺🇸 Rockville, MD |
|---|---|---|
| Local time | 00:10 | 23:10 |
| Local date | Monday, October 12, 2026 | Sunday, October 11, 2026 |
| Time zone | Argentina Standard Time | Eastern Daylight Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Buenos Aires | — | −1 h |
| IANA zone | America/Argentina/Buenos Aires | America/New York |
| Daylight saving | Not observed | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 06:18 | 07:15 |
| Sunset | 19:05 | 18:37 |
| Daylight | 12 h 47 min | 11 h 23 min |
| People on this clock | 2,891,082 | 67,139 |
Compare Buenos Aires with another city
More comparisons with Buenos Aires: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Buenos Aires and Rockville, MD: common questions
How far behind Buenos Aires is Rockville, MD?
Rockville is 1 hour behind Buenos Aires: UTC−4 against UTC−3.
What time is it in Rockville, MD, at the start of the working day in Buenos Aires?
The working day in Buenos Aires starts at 9:00 AM; in Rockville it is 8:00 AM at that moment.
What time is it in Rockville, MD, at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Rockville it is 5:00 PM at that moment.
When is a good time to call Rockville, MD, from Buenos Aires?
Between 10:00 AM and 6:00 PM in Buenos Aires – that is 9:00 AM to 5:00 PM in Rockville – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Rockville, MD, compared with Buenos Aires?
The new day starts in Rockville later: until 1:00 AM in Buenos Aires, it is still the previous day there. From 11:00 PM in Rockville, Buenos Aires is already on the next day.
Is the time difference between Buenos Aires and Rockville, MD, the same all year?
No. Only Rockville switches to summer time, so the gap changes twice a year. From November 1, 2026, Rockville will be 2 hours behind Buenos Aires.
