Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between brt and mst?
Brasilia Time (brt) is UTC-3 and Mountain Standard Time (mst) is UTC-6. The difference between them is 3 hours.
Where is brt used?
Brasilia Time (brt) is used in Brazil and surrounding regions. The IANA timezone identifier is America/Sao_Paulo.
Where is mst used?
Mountain Standard Time (mst) is used in USA and surrounding regions. The IANA timezone identifier is America/Denver.
How do I convert brt to mst?
Use the interactive converter above. Drag the time slider to any brt time and the mst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
How far apart are BRT (São Paulo) and MST (Denver)?
BRT (São Paulo) is 3 hours ahead of MST (Denver). When BRT (São Paulo) clocks hit noon, MST (Denver) reads 09:00.
BRT (São Paulo) observes America/Sao_Paulo and MST (Denver) observes America/Denver — a 3 hours gap between them.
Daily overlap window
Every working day, BRT (São Paulo) and MST (Denver) are both in business hours for 5 hours simultaneously.
00:0006:0012:0018:0024:00
BRT (São Paulo)
MST (Denver)
Overlap (5h)
Optimal meeting slots
BRT (São Paulo) and MST (Denver) share 5 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.
12:00 São Paulo / 09:00 Denver✓ Both working
13:00 São Paulo / 10:00 Denver✓ Both working
14:00 São Paulo / 11:00 Denver✓ Both working
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Holiday calendar for both locations
⚡ Both locations have upcoming holidays, check availability before scheduling.
BRT (São Paulo)7 holidays
Jul 9Constitutionalist Revolution of 1932
Sep 7Independence Day
Oct 12Our Lady of Aparecida
Nov 2All Souls' Day
Nov 15Republic Proclamation Day
MST (Denver)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Working across BRT (São Paulo) and MST (Denver)
Coordinating between BRT (São Paulo) (Brazil) and MST (Denver) (USA) 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.
💡 Best practice for cross-timezone meetings
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Schedule at 12:00–13:00 (BRT (São Paulo)) for a 09:00–10:00 slot in MST (Denver) — the sweet spot where both teams are working.
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Schedule at 13:00–14:00 (BRT (São Paulo)) for a 10:00–11:00 slot in MST (Denver) — the sweet spot where both teams are working.
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Schedule at 14:00–15:00 (BRT (São Paulo)) for a 11:00–12:00 slot in MST (Denver) — 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 BRT (São Paulo) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
