Buenos Aires to Roy, UT: time difference
Roy, UT is 3 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 00:41 12:41 AM Roy, UT 21:41 9:41 PM You –:–
00:41 12:41 AM
Argentina Standard Time · UTC-3
☀️ 06:18 · 🌙 19:05
21:41 9:41 PM
Mountain Daylight Time · UTC-6
☀️ 07:36 · 🌙 18:55
·
−3 h
Roy, UT is 3 h behind Buenos Aires.
When you, Buenos Aires and Roy, UT 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
🇺🇸 Roy, UT
21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇺🇸 Roy, UT |
|---|---|---|
| Local time | 00:41 | 21:41 |
| Local date | Monday, October 12, 2026 | Sunday, October 11, 2026 |
| Time zone | Argentina Standard Time | Mountain Daylight Time |
| UTC offset | UTC-3 | UTC-6 |
| Offset from Buenos Aires | — | −3 h |
| IANA zone | America/Argentina/Buenos Aires | America/Denver |
| Daylight saving | Not observed | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 06:18 | 07:36 |
| Sunset | 19:05 | 18:55 |
| Daylight | 12 h 47 min | 11 h 19 min |
| People on this clock | 2,891,082 | 39,306 |
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 Roy, UT: common questions
How many hours behind Buenos Aires is Roy, UT?
The clocks in Roy are 3 hours behind those in Buenos Aires (UTC−6 and UTC−3).
What time is it in Roy, UT, at the start of the working day in Buenos Aires?
The working day in Buenos Aires starts at 9:00 AM; in Roy it is 6:00 AM at that moment.
What time is it in Roy, UT, at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Roy it is 3:00 PM at that moment.
Is there a time when both Buenos Aires and Roy, UT, are at work?
Yes: from 12:00 PM to 6:00 PM in Buenos Aires (9:00 AM to 3:00 PM in Roy), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Buenos Aires is it still yesterday in Roy, UT?
Before 3:00 AM in Buenos Aires, the date in Roy has not changed yet. From 9:00 PM in Roy, it is already the next day in Buenos Aires.
Does the time difference between Buenos Aires and Roy, UT, change?
Yes. The clocks change only in Roy. From November 1, 2026, Roy will be 4 hours behind Buenos Aires.
