Highlands Ranch, CO to Buenos Aires: time difference
Buenos Aires is 3 h ahead of Highlands Ranch, 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.
Highlands Ranch, CO 18:23 6:23 PM Buenos Aires 21:23 9:23 PM You –:–
18:23 6:23 PM
Mountain Daylight Time · UTC-6
☀️ 07:17 · 🌙 18:14
21:23 9:23 PM
Argentina Standard Time · UTC-3
☀️ 06:05 · 🌙 19:13
·
+3 h
Buenos Aires is 3 h ahead of Highlands Ranch, CO.
When you, Highlands Ranch, 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
🇺🇸 Highlands Ranch, 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 | 🇺🇸 Highlands Ranch, CO | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 18:23 | 21:23 |
| 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 Highlands Ranch, 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 | 07:17 | 06:05 |
| Sunset | 18:14 | 19:13 |
| Daylight | 10 h 57 min | 13 h 8 min |
| People on this clock | — | 2,891,082 |
Compare Highlands Ranch, CO with another city
More comparisons with Highlands Ranch, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Highlands Ranch, CO and Buenos Aires: common questions
What is the time difference between Highlands Ranch, CO, and Buenos Aires?
Buenos Aires is 3 hours ahead: it uses UTC−3, while Highlands Ranch is on UTC−6.
What time is it in Buenos Aires when it is 9:00 AM in Highlands Ranch, CO?
When it is 9:00 AM in Highlands Ranch, it is 12:00 PM in Buenos Aires.
What time is it in Buenos Aires when it is 6:00 PM in Highlands Ranch, CO?
When it is 6:00 PM in Highlands Ranch, it is 9:00 PM in Buenos Aires.
When do working hours in Highlands Ranch, CO, and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:00 PM in Highlands Ranch, which is 12:00 PM to 6:00 PM in Buenos Aires.
When does the date change in Buenos Aires compared with Highlands Ranch, CO?
The new day starts in Buenos Aires earlier: at 9:00 PM in Highlands Ranch it is already midnight there. Until 3:00 AM in Buenos Aires, Highlands Ranch is still on the previous day.
Is the time difference between Highlands Ranch, CO, and Buenos Aires the same all year?
No. Only Highlands Ranch switches to summer time, so the gap changes twice a year. From November 1, 2026, Buenos Aires will be 4 hours ahead of Highlands Ranch.
