World Timezones

BRT to AST-ATLANTIC Converter

Compare AST-ATLANTIC to BRT instead
Brasilia Time1:35 amFri, Jun 5
Brasilia TimeBRT
South America · UTC-3
1:35 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
Atlantic TimeADT
North America · UTC-3
1:35 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

Offset

There is no time difference between Brasilia Time and Atlantic Time.

Same time

Brasilia Time (BRT) is currently the same time as Atlantic Time (ADT).

BRT: UTC-3

ADT: UTC-3

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

When to schedule

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

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

Suggested time: 1:00 PM Brasilia Time (1:00 PM Atlantic 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

Canada

  • New Year's DayThu, Jan 1
  • Good FridayFri, Apr 3
  • Victoria DayMon, May 18
  • Canada DayWed, Jul 1
  • Labour DayMon, Sep 7
  • National Day for Truth and ReconciliationWed, Sep 30
  • ThanksgivingMon, Oct 12
  • Christmas DayFri, Dec 25

About these zones

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

Atlantic Time is also known as AST, or ADT. To call Canada, dial +1.

Atlantic Time is approximately 4,850 miles north of Brasilia Time.

Quick reference

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

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

Daylight saving time

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

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
Atlantic Time
Sunrise
5:31 AM
Sunset
8:56 PM
Day length
15h 25m

Daylight overlap: 10h 45m — 6:44 AM–5:28 PM in Brasilia Time (6:44 AM–5:28 PM in Atlantic Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Atlantic 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 Atlantic Time

  • YHZ

Related conversions

Common conversions

What is 9:00 am BRT in AST-ATLANTIC?
9:00 am BRT is 9:00 am AST-ATLANTIC.
What is 12:00 pm BRT in AST-ATLANTIC?
12:00 pm BRT is 12:00 pm AST-ATLANTIC.
What is 12:30 pm BRT in AST-ATLANTIC?
12:30 pm BRT is 12:30 pm AST-ATLANTIC.
What is 2:00 pm BRT in AST-ATLANTIC?
2:00 pm BRT is 2:00 pm AST-ATLANTIC.
What is 5:00 pm BRT in AST-ATLANTIC?
5:00 pm BRT is 5:00 pm AST-ATLANTIC.
What is 11:30 pm BRT in AST-ATLANTIC?
11:30 pm BRT is 11:30 pm AST-ATLANTIC.