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BrazilBRT
UTC−3
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GMT
UTC+0
3h ahead
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9:00 am09:00 BRT (UTC-3), Oct 31, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 31, 2026

São Luís is 3 hours behind GMT.

How the time difference changes

Sao Luis is 3 hours behind GMT year-round.

Working hours of 9:00 am to 6:00 pm in Sao Luis correspond to 12:00 pm to 9:00 pm in GMT.Working hours of 09:00 to 18:00 in Sao Luis correspond to 12:00 to 21:00 in GMT.

Compare Sao Luis time with GMT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

BRT (Brasilia Time) is 3 hours behind Greenwich Mean Time.
9:00 am09:00 in Sao Luis, Brazil is 12:00 pm12:00 in GMT

São Luís to GMT call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in São Luís which corresponds to 12pm-6pm12:00-18:00 in GMT

9:00 am09:00 BRT (Brasilia Time) (Sao Luis, Brazil). Offset UTC -3:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours

9:00 am09:00 Sao Luis, Brazil / 12:00 pm12:00 GMT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
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São Luís Time Zone and Facts

Time Zone

Abbreviation / Offset
BRT – Brasilia Time, UTC-3 (no daylight saving time)

São Luís Facts

Country
Brazil
Alternative Names
Maranham, Maranhao, Maranhão, SLZ, San Luisas, San-Luis, Sao Louis, Sao Luis, Sao Luis do Maranhao, Sao Luiz, Sao Luiz de Maranhao, Sao Luiz do Maranhao, Saun Luis, Saun Luís, São Luis, São Luiz, São Luiz de Maranhão, São Luiz do Maranhão, São Luís, São Luís do Maranhão, cavo luyicu, sa'o lu'isa, san-luisi, sanglu-iseu, saw lwyys, saw lwyz, sayw lwyys maranhaw, sheng lu yi si, Σάο Λουίς, Сан-Луис, Сан-Луіс, Сан-Луїс, Сао Луис, סאו לואיס, ساؤ لوئیس, ساؤ لوئیس، مارانہاؤ, سائو لوئیس، مارانهاو, ساو لويز, साओ लुईस, সাও লুইস, சாவோ லூயிசு, სან-ლუისი, サン・ルイス, 圣路易斯, 상루이스
Population
917,237
Currency
Real (BRL)
Geographic Coordinates
2° 31' S Latitude / 44° 18' W Longitude
International Dialing Code
+55

Greenwich Mean Time

Offset: GMT is the same as Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, Burkina Faso, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Togo, United Kingdom, Western Sahara

Principal Cities: The largest city in the GMT time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.

Map of the areas on Greenwich Mean Time (GMT)
GMT all year GMT part of the year

Today all shaded areas are on GMT.

GMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for GMT
  • Z - short form of 'Zulu'
IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Abidjan
  • Africa/Accra
  • Africa/Bamako
  • Africa/Banjul
  • Africa/Bissau
  • Africa/Conakry
  • Africa/Dakar
  • Africa/Freetown
  • Africa/Lome
  • Africa/Monrovia
  • Africa/Nouakchott
  • Africa/Ouagadougou
  • Africa/Sao_Tome
  • Africa/Timbuktu
  • America/Danmarkshavn
  • Atlantic/Reykjavik
  • Atlantic/St_Helena
  • Eire
  • Etc/GMT
  • Etc/GMT+0
  • Etc/GMT-0
  • Etc/GMT0
  • Etc/Greenwich
  • Europe/Belfast
  • Europe/Dublin
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
  • GMT
  • GMT+0
  • GMT-0
  • GMT0
  • Greenwich
  • Iceland
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone