🇦🇷 Buenos Aires, Argentina
32
- Argentina Standard Time
- UTC-3
- Daytime
☀️ 06:18 · 🌙 19:05 · 12 h 47 min
Buenos Aires to Monument, CO: time difference
Monument, 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 09:45 9:45 AM Monument, CO 06:45 6:45 AM You –:–
09:45 9:45 AM
Argentina Standard Time · UTC-3
☀️ 06:18 · 🌙 19:05
06:45 6:45 AM
Mountain Daylight Time · UTC-6
☀️ 07:06 · 🌙 18:28
·
−3 h
Monument, CO is 3 h behind Buenos Aires.
When you, Buenos Aires and Monument, 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
🇺🇸 Monument, 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 | 🇺🇸 Monument, CO |
|---|---|---|
| Local time | 09:45 | 06:45 |
| Local date | Sunday, October 11, 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 | 07:06 |
| Sunset | 19:05 | 18:28 |
| Daylight | 12 h 47 min | 11 h 22 min |
| People on this clock | 2,891,082 | 10,000 |
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 Monument, CO: common questions
What is the time difference between Buenos Aires and Monument, CO?
Monument is 3 hours behind: it uses UTC−6, while Buenos Aires is on UTC−3.
If it is 9:00 AM in Buenos Aires, what time is it in Monument, CO?
At 9:00 AM in Buenos Aires, clocks in Monument show 6:00 AM.
If it is 6:00 PM in Buenos Aires, what time is it in Monument, CO?
At 6:00 PM in Buenos Aires, clocks in Monument show 3:00 PM.
When is a good time to call Monument, 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 Monument – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Monument, CO, compared with Buenos Aires?
The new day starts in Monument later: until 3:00 AM in Buenos Aires, it is still the previous day there. From 9:00 PM in Monument, Buenos Aires is already on the next day.
Does the time difference between Buenos Aires and Monument, CO, change?
Yes. The clocks change only in Monument. From November 1, 2026, Monument will be 4 hours behind Buenos Aires.
