GMT to BRT Time Converter

Convert Greenwich Mean Time (GMT) to Brasília Time (BRT). Both time zones are shown live below; current offset between them is 4 hours behind.

London · Greenwich Mean Time
00:58:18
Tuesday, May 12, 2026
GMT+1 · UTC+01:00
São Paulo · Brasília Time
20:58:18
Monday, May 11, 2026
GMT-3 · UTC-03:00

Convert a specific time

From: GMT (London)
To: BRT (São Paulo)
--:--

Daylight Saving status right now

GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00
BRT (Brasília Time)
Observes DST
No

Heads up: GMT observes DST while BRT does not. The 4-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can GMT and BRT meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
GMT
BRT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in London (GMT). Each row shows the local working-hours state in that zone for the same moment in time.
4 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 13:00–16:00 GMT (09:00–12:00 BRT).

Hour-by-hour GMT to BRT conversion table

GMT time (London)BRT time (São Paulo)Status
00:00 Tue20:00 MonOff-hours both sides
01:00 Tue21:00 MonOff-hours both sides
02:00 Tue22:00 MonOff-hours both sides
03:00 Tue23:00 MonOff-hours both sides
04:00 Tue00:00 TueOff-hours both sides
05:00 Tue01:00 TueOff-hours both sides
06:00 Tue02:00 TueOff-hours both sides
07:00 Tue03:00 TueOff-hours both sides
08:00 Tue04:00 TueOff-hours both sides
09:00 Tue05:00 TueGMT working
10:00 Tue06:00 TueGMT working
11:00 Tue07:00 TueGMT working
12:00 Tue08:00 TueGMT working
13:00 Tue09:00 TueBoth at work
14:00 Tue10:00 TueBoth at work
15:00 Tue11:00 TueBoth at work
16:00 Tue12:00 TueBoth at work
17:00 Tue13:00 TueBRT working
18:00 Tue14:00 TueBRT working
19:00 Tue15:00 TueBRT working
20:00 Tue16:00 TueBRT working
21:00 Tue17:00 TueOff-hours both sides
22:00 Tue18:00 TueOff-hours both sides
23:00 Tue19:00 TueOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham
Brasília Time (BRT)
IANA identifier
America/Sao_Paulo
Current UTC offset
UTC-03:00
Current abbreviation
GMT-3
Major cities in this zone
São PauloRio de JaneiroBrasília

Sun today in London and São Paulo

London
Sunrise
05:16
Sunset
20:39
Solar noon
12:58
Daylight
15h 23m
São Paulo
Sunrise
06:32
Sunset
17:35
Solar noon
12:04
Daylight
11h 3m

Related converters

BRT to GMT (reverse)GMT to ESTGMT to PSTGMT to UTCGMT to CETGMT to ISTEST to BRTPST to BRTUTC to BRTCET to BRTIST to BRT
Looking for local time? See time in London or time in São Paulo.

Frequently asked questions

What is the time difference between GMT and BRT right now?+
BRT (Brasília Time) is currently 4 hours behind GMT (Greenwich Mean Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does GMT or BRT observe daylight saving time?+
GMT: observes daylight saving time. BRT: does not observe daylight saving time.
When is the best time to schedule a meeting between GMT and BRT?+
The strongest overlap is 13:00–16:00 GMT (09:00–12:00 BRT), giving 4 hours when both sides are within standard 9am-5pm working hours.
What time is it in São Paulo when it is 12:00 noon in London?+
When it is 12:00 Tue in London (GMT), it is 08:00 Tue in São Paulo (BRT).
Which IANA time zone identifiers are used for GMT and BRT?+
GMT maps to "Europe/London" in the IANA database. BRT maps to "America/Sao_Paulo". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is London ahead of or behind São Paulo?+
Whether London (GMT) is ahead of or behind São Paulo (BRT) depends on the current UTC offsets. Right now BRT is 4 hours behind GMT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for GMT and BRT?+
GMT is UTC+01:00 (GMT+1) and BRT is UTC-03:00 (GMT-3). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both GMT and BRT?+
Yes. There are 4 hours of overlap during standard 9am-5pm working hours, with the strongest window at 13:00–16:00 GMT.