Buenos Aires to Highlands Ranch, CO: time difference
Highlands Ranch, CO 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 22:21 10:21 PM Highlands Ranch, CO 19:21 7:21 PM You –:–
22:21 10:21 PM
Argentina Standard Time · UTC-3
☀️ 06:05 · 🌙 19:13
19:21 7:21 PM
Mountain Daylight Time · UTC-6
☀️ 07:17 · 🌙 18:14
·
−3 h
Highlands Ranch, CO is 3 h behind Buenos Aires.
When you, Buenos Aires and Highlands Ranch, CO 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
🇺🇸 Highlands Ranch, CO
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 | 🇺🇸 Highlands Ranch, CO |
|---|---|---|
| Local time | 22:21 | 19:21 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 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 | 06:05 | 07:17 |
| Sunset | 19:13 | 18:14 |
| Daylight | 13 h 8 min | 10 h 57 min |
| People on this clock | 2,891,082 | — |
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 Highlands Ranch, CO: common questions
How many hours behind Buenos Aires is Highlands Ranch, CO?
The clocks in Highlands Ranch are 3 hours behind those in Buenos Aires (UTC−6 and UTC−3).
What time is it in Highlands Ranch, CO, at the start of the working day in Buenos Aires?
The working day in Buenos Aires starts at 9:00 AM; in Highlands Ranch it is 6:00 AM at that moment.
If it is 6:00 PM in Buenos Aires, what time is it in Highlands Ranch, CO?
At 6:00 PM in Buenos Aires, clocks in Highlands Ranch show 3:00 PM.
When do working hours in Buenos Aires and in Highlands Ranch, CO, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Buenos Aires, which is 9:00 AM to 3:00 PM in Highlands Ranch.
When is it still the previous day in Highlands Ranch, CO?
Until 3:00 AM in Buenos Aires it is still the previous day in Highlands Ranch. The other way round, from 9:00 PM in Highlands Ranch it is already the next day in Buenos Aires.
Is the time difference between Buenos Aires and Highlands Ranch, CO, the same all year?
No. Only Highlands Ranch switches to summer time, so the gap changes twice a year. From November 1, 2026, Highlands Ranch will be 4 hours behind Buenos Aires.
