Alamosa, CO to Buenos Aires: time difference
Buenos Aires is 3 h ahead of Alamosa, CO. Live clocks for both, the working hours they share, and how each one sits against your own time.
+3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Alamosa, CO 20:12 8:12 PM Buenos Aires 23:12 11:12 PM You –:–
20:12 8:12 PM
Mountain Daylight Time · UTC-6
☀️ 07:18 · 🌙 18:20
23:12 11:12 PM
Argentina Standard Time · UTC-3
☀️ 06:05 · 🌙 19:13
·
+3 h
Buenos Aires is 3 h ahead of Alamosa, CO.
When you, Alamosa, CO 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
🇺🇸 Alamosa, CO
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
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 1 1 AM 2 2 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 Alamosa, CO | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 20:12 | 23:12 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Mountain Daylight Time | Argentina Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Alamosa, CO | — | +3 h |
| IANA zone | America/Denver | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 07:18 | 06:05 |
| Sunset | 18:20 | 19:13 |
| Daylight | 11 h 2 min | 13 h 8 min |
| People on this clock | 10,000 | 2,891,082 |
Compare Alamosa, CO with another city
More comparisons with Alamosa, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Alamosa, CO and Buenos Aires: common questions
What is the time difference between Alamosa, CO, and Buenos Aires?
Buenos Aires is 3 hours ahead: it uses UTC−3, while Alamosa is on UTC−6.
If it is 9:00 AM in Alamosa, CO, what time is it in Buenos Aires?
At 9:00 AM in Alamosa, clocks in Buenos Aires show 12:00 PM.
If it is 6:00 PM in Alamosa, CO, what time is it in Buenos Aires?
At 6:00 PM in Alamosa, clocks in Buenos Aires show 9:00 PM.
Is there a time when both Alamosa, CO, and Buenos Aires are at work?
Yes: from 9:00 AM to 3:00 PM in Alamosa (12:00 PM 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 Alamosa, CO?
The new day starts in Buenos Aires earlier: at 9:00 PM in Alamosa it is already midnight there. Until 3:00 AM in Buenos Aires, Alamosa is still on the previous day.
Is the time difference between Alamosa, CO, and Buenos Aires the same all year?
No. Only Alamosa switches to summer time, so the gap changes twice a year. From November 1, 2026, Buenos Aires will be 4 hours ahead of Alamosa.
