World Timezones

BRT to MST Converter

Compare MST to BRT instead
Brasilia Time1:36 amFri, Jun 5
Brasilia TimeBRT
South America · UTC-3
1:36 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Mountain TimeMDT
North America · UTC-6
10:36 pmThu, Jun 4
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p

Offset

The time difference between Brasilia Time and Mountain Time is 3 hours.

3 hours

Brasilia Time (BRT) is ahead of Mountain Time (MDT).

BRT: UTC-3

MDT: UTC-6

Mountain Time is currently observing daylight saving time; Brasilia Time is not.

When to schedule

Business-hours overlap: 12 PM–5 PM in Brasilia Time (9 AM–2 PM in Mountain Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 2:00 PM Brasilia Time (11:00 AM Mountain Time).

This window may shift by an hour during daylight saving time.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

Brazil

  • New Year's DayThu, Jan 1
  • CarnivalMon, Feb 16
  • CarnivalTue, Feb 17
  • Good FridayFri, Apr 3
  • Easter SundaySun, Apr 5
  • TiradentesTue, Apr 21
  • Labour DayFri, May 1
  • Corpus ChristiThu, Jun 4
  • Independence DayMon, Sep 7
  • Our Lady of AparecidaMon, Oct 12
  • All Souls' DayMon, Nov 2
  • Republic Proclamation DaySun, Nov 15
  • Black Awareness DayFri, Nov 20
  • Christmas DayFri, Dec 25

United States

  • New Year's DayThu, Jan 1
  • Martin Luther King, Jr. DayMon, Jan 19
  • Presidents DayMon, Feb 16
  • Memorial DayMon, May 25
  • Juneteenth National Independence DayFri, Jun 19
  • Independence DayFri, Jul 3
  • Labour DayMon, Sep 7
  • Columbus DayMon, Oct 12
  • Veterans DayWed, Nov 11
  • Thanksgiving DayThu, Nov 26
  • Christmas DayFri, Dec 25

About these zones

Brasilia Time is also known as BRT. To call Brazil, dial +55.

Mountain Time is also known as MST, or MDT. To call United States, dial +1.

Mountain Time is approximately 5,750 miles northwest of Brasilia Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

BRTMSTDay
12:00 am9:00 pm-1 day
1:00 am10:00 pm-1 day
2:00 am11:00 pm-1 day
3:00 am12:00 amSame day
4:00 am1:00 amSame day
5:00 am2:00 amSame day
6:00 am3:00 amSame day
7:00 am4:00 amSame day
8:00 am5:00 amSame day
9:00 am6:00 amSame day
10:00 am7:00 amSame day
11:00 am8:00 amSame day
12:00 pm9:00 amSame day
1:00 pm10:00 amSame day
2:00 pm11:00 amSame day
3:00 pm12:00 pmSame day
4:00 pm1:00 pmSame day
5:00 pm2:00 pmSame day
6:00 pm3:00 pmSame day
7:00 pm4:00 pmSame day
8:00 pm5:00 pmSame day
9:00 pm6:00 pmSame day
10:00 pm7:00 pmSame day
11:00 pm8:00 pmSame day

Daylight saving time

Mountain Time observes daylight saving time; Brasilia Time does not. The offset between the two zones changes when Mountain Time transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Brasilia Time
Sunrise
6:44 AM
Sunset
5:28 PM
Day length
10h 45m
Mountain Time
Sunrise
5:34 AM
Sunset
8:25 PM
Day length
14h 51m

Cities in these zones

Cities in Mountain Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Brasilia Time

  • CGH
  • GRU
  • GIG
  • SDU
  • CNF
  • BSB
  • CWB
  • GYN
  • POA

Airports in Mountain Time

  • BJC
  • DEN
  • OGD
  • SLC

Related conversions

Common conversions

What is 9:00 am BRT in MST?
9:00 am BRT is 6:00 am MST.
What is 12:00 pm BRT in MST?
12:00 pm BRT is 9:00 am MST.
What is 12:30 pm BRT in MST?
12:30 pm BRT is 9:30 am MST.
What is 2:00 pm BRT in MST?
2:00 pm BRT is 11:00 am MST.
What is 5:00 pm BRT in MST?
5:00 pm BRT is 2:00 pm MST.
What is 11:30 pm BRT in MST?
11:30 pm BRT is 8:30 pm MST.