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The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.

Iceland and Ghana stay on GMT (UTC+0).

BrazilBRT
UTC−3
3h behind
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Quick answers

Selected conversion

12:00 pm12:00 GMT (UTC+0), Oct 15, 2026 = 9:00 am09:00 BRT (UTC-3), Oct 15, 2026

GMT is 3 hours ahead of Florianópolis.

How the time difference changes

GMT is 3 hours ahead of Florianopolis year-round.

Working hours of 9:00 am to 6:00 pm in GMT correspond to 6:00 am to 3:00 pm in Florianopolis.Working hours of 09:00 to 18:00 in GMT correspond to 06:00 to 15:00 in Florianopolis.

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

Time Difference

Greenwich Mean Time is 3 hours ahead of BRT (Brasilia Time).
12:00 pm12:00 in GMT is 9:00 am09:00 in Florianopolis, Brazil

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

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

12:00 pm12:00 GMT / 9:00 am09:00 Florianopolis, Brazil

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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Greenwich Mean Time

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

Countries using this time zone: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo

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, Dakar, Kumasi.

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 the lighter areas are on UTC+1 (British Summer Time, Irish Standard Time).

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

Florianópolis Time Zone and Facts

Time Zone

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

Florianópolis Facts

Country
Brazil
Alternative Names
Destero, Desterro, FLN, Florianopolis, Florianópolis, Florijanopolis, Floripa, Florjanopolisa, Nossa Senhora do Desterro, Nossa Senhora do Destêrro, Santa Catherina, flwryanwbwlys, flwryanwplys, flwryanwpwls, fol reiyn x polis, fu luo li ya nuo bo li si, furorianoporisu, peullolianopolliseu, phloriyanopolisa, Флорианополис, Флоријанополис, Флоріанополіс, פלוריאנופוליס, فلوريانوبوليس, فلوریانوپلیس, فلوریانوپولس, ফ্লোরিয়ানোপোলিস, โฟลเรียนอโปลิส, ფლორიანოპოლისი, フロリアノーポリス, 弗洛里亚诺波利斯, 플로리아노폴리스
Population
508,826
Currency
Real (BRL)
Geographic Coordinates
27° 35' S Latitude / 48° 32' W Longitude
International Dialing Code
+55