Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between mdt and art?
Mountain Daylight Time (mdt) is UTC-6 and Argentina Time (art) is UTC-3. The difference between them is 3 hours.
Where is mdt used?
Mountain Daylight Time (mdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Denver.
Where is art used?
Argentina Time (art) is used in Argentina and surrounding regions. The IANA timezone identifier is America/Argentina/Buenos_Aires.
How do I convert mdt to art?
Use the interactive converter above. Drag the time slider to any mdt time and the art equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
MDT (Denver) to ART (Buenos Aires) — exact time difference
MDT (Denver) is 3 hours behind ART (Buenos Aires). Midday in MDT (Denver) lines up with 15:00 in ART (Buenos Aires).
MDT (Denver) observes America/Denver and ART (Buenos Aires) observes America/Argentina/Buenos_Aires — a 3 hours gap between them.
Working hours overlap
There is a 5-hour window each day where both MDT (Denver) and ART (Buenos Aires) are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
MDT (Denver)
ART (Buenos Aires)
Overlap (5h)
Optimal meeting slots
MDT (Denver) and ART (Buenos Aires) share 5 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.
09:00 Denver / 12:00 Buenos Aires✓ Both working
10:00 Denver / 13:00 Buenos Aires✓ Both working
11:00 Denver / 14:00 Buenos Aires✓ Both working
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Upcoming public holidays
⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.
MDT (Denver)7 holidays
Jul 3Independence DaySOON
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans Day
ART (Buenos Aires)6 holidays
Jul 9Independence DaySOON
Aug 17General José de San Martín Memorial Day
Oct 12Day of Respect for Cultural Diversity
Nov 23National Sovereignty Day
Dec 8Immaculate Conception Day
How to work with MDT (Denver) and ART (Buenos Aires) time zones
Coordinating between MDT (Denver) (USA) and ART (Buenos Aires) (Argentina) means working around a 3-hour time difference. The 5-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.
💡 How to schedule across these time zones
✅
Schedule at 09:00–10:00 (MDT (Denver)) for a 12:00–13:00 slot in ART (Buenos Aires) — the sweet spot where both teams are working.
✅
Schedule at 10:00–11:00 (MDT (Denver)) for a 13:00–14:00 slot in ART (Buenos Aires) — the sweet spot where both teams are working.
✅
Schedule at 11:00–12:00 (MDT (Denver)) for a 14:00–15:00 slot in ART (Buenos Aires) — the sweet spot where both teams are working.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any MDT (Denver) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
