Buenos Aires to Denver
-3hBuenos Aires
ARTSOURCEDenver
MDTGreen rows indicate typical business hours (9 AM - 5 PM)
ART and MDT on the World Map
The map below highlights the ART (Argentina Time) and MDT (Mountain Standard Time) timezone regions across the globe.
ART – Argentina Time
UTC-03:00Argentina Time (ART) is the standard time for Argentina, 3 hours behind UTC.
- •Argentina does not observe daylight saving time.
- •Buenos Aires is one of the most visited cities in South America.
- •ART is the same offset as BRT (UTC-03:00).
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
About Buenos Aires
WikipediaBuenos Aires operates on Argentina Time (ART), UTC-3. As South America's most European city, Buenos Aires coordinates with Brazilian markets in the same timezone.
The Teatro Colón is considered one of the best opera houses in the world for acoustics.
About Denver
WikipediaDenver operates on Mountain Time (MST/MDT), 2 hours behind New York. As a tech and aerospace hub, Denver bridges West Coast and Central US business hours.
Denver International Airport is the largest airport in North America by land area.
Everything You Need to Know About Buenos Aires and Denver Time
Buenos Aires runs on Argentina Standard Time (ART) at UTC-03:00. Denver runs on Mountain Daylight Time (MDT) at UTC-06:00, also currently on daylight saving time. That puts Buenos Aires 3 hours behind Denver — a difference of -3h at the current offsets.
In practice, when it is 9:00 AM in Buenos Aires it is 6:00 AM in Denver. Midnight in Buenos Aires is 9:00 PM in Denver.Denver observes daylight saving time while Buenos Aires does not, so the gap narrows or widens by an hour part of the year.
Buenos Aires to Denver time conversion table
| Buenos Aires (ART) | Denver (MDT) | Day |
|---|---|---|
| 12:00 AM | 9:00 PM | previous day |
| 6:00 AM | 3:00 AM | same day |
| 7:00 AM | 4:00 AM | same day |
| 8:00 AM | 5:00 AM | same day |
| 9:00 AM | 6:00 AM | same day |
| 12:00 PM | 9:00 AM | same day |
| 3:00 PM | 12:00 PM | same day |
| 5:00 PM | 2:00 PM | same day |
| 6:00 PM | 3:00 PM | same day |
| 9:00 PM | 6:00 PM | same day |
Why people convert Buenos Aires to Denver time
- Scheduling a call from Buenos Aires to Denver: a 10:00 AM start in Buenos Aires lands at 7:00 AM in Denver, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Buenos Aires and Denver are inside the 9-to-5 working day between 12:00 PM and 5:00 PM ART time (9:00 AM–2:00 PM MDT). That is roughly 5 hours of usable overlap.
- Watching a live event or market open: Buenos Aires viewers need 6:00 AM in Denver to catch a 9:00 AM start there, and 3:00 AM if the event is anchored to Buenos Aires.
- Always state the zone abbreviation, not just the hour. "3:00 PM ART" is unambiguous; "3 PM" across a -3h gap is not.
- Block 12:00 PM–5:00 PM ART as the recurring meeting window if you work primarily from Buenos Aires and need Denver colleagues present.
- Denver: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About ART (Argentina Time)
Argentina Time (ART) is the time zone used throughout Argentina. Argentina does not observe daylight saving time. ART shares the same offset as Brasilia Time (BRT) and Uruguay's UYT.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
Best time to call between Buenos Aires and Denver
Both Buenos Aires and Denver sit inside the 9 AM – 5 PM working day between 12:00 PM–5:00 PM ART, which is 9:00 AM–2:00 PM MDT. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Buenos Aires and Denver share 5 hours of working-hours overlap (12:00 PM–5:00 PM ART), so scheduling a live meeting is straightforward.
Buenos Aires is 3 hours behind Denver (ART UTC-03:00 → MDT UTC-06:00). The shared working window is 12:00 PM–5:00 PM ART. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Buenos Aires
Does not observe DST
Denver
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Buenos Aires and Denver?
Buenos Aires (ART, UTC-03:00) is 3 hours behind Denver (MDT, UTC-06:00). The gap is currently -3h.
How do I convert Buenos Aires time to Denver time?
Add -3h to Buenos Aires local time. For example, 9:00 AM in Buenos Aires is 6:00 AM in Denver.
What time is it in Denver right now?
Denver uses MDT at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -3h offset from Buenos Aires.
What is the best time to call Denver from Buenos Aires?
Call between 12:00 PM and 5:00 PM ART — that maps to 9:00 AM–2:00 PM MDT and keeps both parties inside the working day.
Which is behind, Buenos Aires or Denver?
Buenos Aires is 3 hours behind Denver. When it is 12:00 PM in Buenos Aires it is 9:00 AM in Denver.
Do Buenos Aires and Denver use different time zones?
Buenos Aires (Argentina) uses ART at UTC-03:00, while Denver (USA) uses MDT at UTC-06:00. The IANA identifiers are America/Buenos_Aires and America/Denver.
Does daylight saving time affect the Buenos Aires–Denver difference?
Yes at the moment: Denver is on daylight saving time and Buenos Aires is not, so the -3h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Buenos Aires's time zone?
ART also covers Buenos Aires, Córdoba, Rosario, Mendoza, La Plata, Tucumán.
Which countries use ART, Buenos Aires's zone?
ART is used in Argentina.
Is there a day difference between Buenos Aires and Denver?
Not normally. The -3h gap only pushes the date over the previous day.
What is the time difference between Buenos Aires and Denver?
Denver is -3h from Buenos Aires.
What timezone is Buenos Aires in?
Buenos Aires operates on Argentina Time (ART), UTC-3. As South America's most European city, Buenos Aires coordinates with Brazilian markets in the same timezone.
What timezone is Denver in?
Denver operates on Mountain Time (MST/MDT), 2 hours behind New York. As a tech and aerospace hub, Denver bridges West Coast and Central US business hours.
What are the business hours in Buenos Aires?
Standard business hours in Buenos Aires are 9:00 AM - 6:00 PM ART.
What are the business hours in Denver?
Standard business hours in Denver are 8:00 AM - 5:00 PM MST.
What is the best time to schedule a call between Buenos Aires and Denver?
The best overlap for a call is when both cities are in business hours. Buenos Aires works 9:00 AM - 6:00 PM ART and Denver works 8:00 AM - 5:00 PM MST (-3h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Buenos Aires and Denver?
Buenos Aires uses ARS ($) while Denver uses USD ($). Check current exchange rates when planning travel or business between these cities.
How do Buenos Aires and Denver compare in size?
Buenos Aires has a population of approximately 3 million (metro: 15.4 million), while Denver has approximately 715,000 (metro: 2.9 million).
What are the major landmarks in Buenos Aires and Denver?
Buenos Aires is known for Casa Rosada, Teatro Colón, La Boca. Denver is famous for Red Rocks Amphitheatre, Denver Art Museum, Union Station.
Do Buenos Aires and Denver have stock exchanges?
Yes. Buenos Aires has the BCBA (Buenos Aires Stock Exchange) and Denver has the N/A (Uses NYSE/NASDAQ). The -3h time difference affects trading hour overlaps between these exchanges.
Which countries use ART (Argentina Time)?
ART is used in Argentina.
Does ART observe daylight saving time?
No, ART does not observe daylight saving time and remains at UTC-03:00 year-round.
What are some interesting facts about ART?
Argentina does not observe daylight saving time. Buenos Aires is one of the most visited cities in South America.
Which cities are in the MST timezone?
Major cities in the MST timezone include Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson.
What is the UTC offset for MST?
Mountain Standard Time (MST) is at UTC-07:00. During daylight saving time, it shifts to MDT.
What should I know about the MST timezone?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
When is it midnight in Buenos Aires, what time is it in Denver?
When it is 12:00 AM (midnight) in Buenos Aires (ART), it is -3h later in Denver (MST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Buenos Aires time conversions
- buenos aires to art
- buenos aires to argentina
- buenos aires to new york
- buenos aires to los angeles
- buenos aires to chicago
- buenos aires to toronto
- buenos aires to vancouver
- buenos aires to mexico city
- buenos aires to sao paulo
- buenos aires to bogota
- buenos aires to lima
- buenos aires to santiago
- buenos aires to anchorage
- buenos aires to london
- buenos aires to dubai
- buenos aires to tokyo
- buenos aires to singapore
- buenos aires to sydney
- buenos aires to paris
- buenos aires to delhi
- buenos aires to mumbai
- buenos aires to berlin
- buenos aires to hong kong
- buenos aires to kathmandu
- new york to buenos aires
- london to buenos aires
- dubai to buenos aires
- tokyo to buenos aires
- singapore to buenos aires
- sydney to buenos aires
- los angeles to buenos aires
- paris to buenos aires
- delhi to buenos aires
- mumbai to buenos aires
- berlin to buenos aires
See every conversion from Buenos Aires →·See every conversion from Denver →