World Timezones

AST-ATLANTIC to BRT Converter

Compare BRT to AST-ATLANTIC instead
Atlantic Time1:35 amFri, Jun 5
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
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

Offset

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

Same time

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

ADT: UTC-3

BRT: 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 Atlantic Time (9 AM–5 PM in Brasilia Time).

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

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

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

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

About these zones

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

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

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

Quick reference

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

AST-ATLANTICBRTDay
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

Atlantic Time
Sunrise
5:31 AM
Sunset
8:56 PM
Day length
15h 25m
Brasilia Time
Sunrise
6:44 AM
Sunset
5:28 PM
Day length
10h 45m

Daylight overlap: 10h 45m — 6:44 AM–5:28 PM in Atlantic Time (6:44 AM–5:28 PM in Brasilia 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 Atlantic Time

  • YHZ

Airports in Brasilia Time

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

Related conversions

Common conversions

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