Buenos Aires to Centennial, CO: time difference
Centennial, 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 13:04 1:04 PM Centennial, CO 10:04 10:04 AM You –:–
13:04 1:04 PM
Argentina Standard Time · UTC-3
☀️ 06:06 · 🌙 19:12
10:04 10:04 AM
Mountain Daylight Time · UTC-6
☀️ 07:15 · 🌙 18:15
·
−3 h
Centennial, CO is 3 h behind Buenos Aires.
When you, Buenos Aires and Centennial, 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
🇺🇸 Centennial, 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 | 🇺🇸 Centennial, CO |
|---|---|---|
| Local time | 13:04 | 10:04 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 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 | 06:06 | 07:15 |
| Sunset | 19:12 | 18:15 |
| Daylight | 13 h 6 min | 10 h 59 min |
| People on this clock | 2,891,082 | 109,741 |
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 Centennial, CO: common questions
How many hours behind Buenos Aires is Centennial, CO?
The clocks in Centennial are 3 hours behind those in Buenos Aires (UTC−6 and UTC−3).
What time is it in Centennial, CO, at the start of the working day in Buenos Aires?
The working day in Buenos Aires starts at 9:00 AM; in Centennial it is 6:00 AM at that moment.
What time is it in Centennial, CO, at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Centennial it is 3:00 PM at that moment.
When is a good time to call Centennial, CO, from Buenos Aires?
Between 12:00 PM and 6:00 PM in Buenos Aires – that is 9:00 AM to 3:00 PM in Centennial – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Centennial, CO?
Until 3:00 AM in Buenos Aires it is still the previous day in Centennial. The other way round, from 9:00 PM in Centennial it is already the next day in Buenos Aires.
Does the time difference between Buenos Aires and Centennial, CO, change?
Yes. The clocks change only in Centennial. From November 1, 2026, Centennial will be 4 hours behind Buenos Aires.
