World Timezones

GMT to BRT Converter

Compare BRT to GMT instead
Greenwich Mean Time5:35 amFri, Jun 5
Greenwich Mean TimeBST
Europe · UTC+1
5:35 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
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p

Offset

The time difference between Greenwich Mean Time and Brasilia Time is 4 hours.

4 hours

Greenwich Mean Time (BST) is ahead of Brasilia Time (BRT).

BST: UTC+1

BRT: UTC-3

Greenwich Mean Time is currently observing daylight saving time; Brasilia Time is not.

When to schedule

Business-hours overlap: 1 PM–5 PM in Greenwich Mean Time (9 AM–1 PM in Brasilia Time).

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

Suggested time: 3:00 PM Greenwich Mean Time (11:00 AM 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.

United Kingdom

  • Good FridayFri, Apr 3
  • Early May Bank HolidayMon, May 4
  • Spring Bank HolidayMon, May 25
  • Christmas DayFri, Dec 25
  • St. Stephen's DayMon, Dec 28

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

Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.

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

Brasilia Time is approximately 5,900 miles southwest of Greenwich Mean Time.

Quick reference

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

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

Daylight saving time

Greenwich Mean Time observes daylight saving time; Brasilia Time does not. The offset between the two zones changes when Greenwich Mean Time transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.

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

Daylight today

Greenwich Mean Time
Sunrise
4:47 AM
Sunset
9:13 PM
Day length
16h 25m
Brasilia Time
Sunrise
6:44 AM
Sunset
5:28 PM
Day length
10h 45m

Daylight overlap: 10h 29m — 10:44 AM–9:13 PM in Greenwich Mean Time (6:44 AM–5:13 PM in Brasilia Time). Both locations are in daylight during this window.

Cities in these zones

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Greenwich Mean Time

  • LCY
  • LGW
  • LHR
  • LTN
  • STN
  • BHX
  • EMA
  • GLA
  • PIK
  • LBA

Airports in Brasilia Time

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

Related conversions

Common conversions

What is 9:00 am GMT in BRT?
9:00 am GMT is 5:00 am BRT.
What is 12:00 pm GMT in BRT?
12:00 pm GMT is 8:00 am BRT.
What is 12:30 pm GMT in BRT?
12:30 pm GMT is 8:30 am BRT.
What is 2:00 pm GMT in BRT?
2:00 pm GMT is 10:00 am BRT.
What is 5:00 pm GMT in BRT?
5:00 pm GMT is 1:00 pm BRT.
What is 11:30 pm GMT in BRT?
11:30 pm GMT is 7:30 pm BRT.