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  1. en.wikipedia.org › wiki › Greenwich_Mean_TimeGreenwich Mean Time - Wikipedia

    Greenwich Mean Time (GMT) is the local mean time at the Royal Observatory in Greenwich, London, counted from midnight. At different times in the past, it has been calculated in different ways, including being calculated from noon; as a consequence, it cannot be used to specify a particular time unless a context is given.

  2. pt.wikipedia.org › wiki › Tempo_Médio_de_GreenwichTempo Médio de Greenwich – Wikipédia, a enciclopédia livre

    Tempo Médio de Greenwich (TMG) ou Greenwich Mean Time (GMT) em inglês, também conhecido por Hora de Greenwich, é a média do horário solar aparente no Observatório Real, em Greenwich, Londres. Após a Revolução Industrial, formas de medir o tempo mais precisas do que a simples observação do movimento aparente do sol ...

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  4. en.wikipedia.org › wiki › Time_zoneTime zone - Wikipedia

    The Royal Observatory, Greenwich, founded in 1675, established Greenwich Mean Time (GMT), the mean solar time at that location, as an aid to mariners to determine longitude at sea, providing a standard reference time while each location in England kept a different time.

    Utc Offset
    Locations That Do Not Use Dst
    UTC−12:00
    Baker Island Howland Island
    UTC−11:00
    American Samoa Jarvis Island Kingman Reef ...
    UTC−10:00
    Cook Islands French Polynesia (most) ...
    UTC−09:30
    French Polynesia: Marquesas Islands

    Veja a lista completa: en.wikipedia.org

  5. de.wikipedia.org › wiki › Greenwich_Mean_TimeGreenwich Mean Time – Wikipedia

    Greenwich Mean Time [ˌgrenɪtʃ ˈmiːn taim; -ɪdʒ] (kurz GMT; englisch für „mittlere Greenwich-Zeit“) ist die mittlere Sonnenzeit am Greenwicher Nullmeridian. Die Greenwich Mean Time war von 1884 bis 1928 Weltzeit, in dieser Funktion wurde sie 1972 von der Koordinierten Weltzeit (UTC) abgelöst.

  6. simple.wikipedia.org › wiki › Greenwich_Mean_TimeGreenwich Mean Time - Simple English Wikipedia, the free ...

    Greenwich Mean Time (GMT) is an internationally standardized time format. It is the main time zone in several countries, including the United Kingdom, the Republic of Ireland and Portugal. GMT has the same time as UTC, but there are differences between the two. [1]

  7. www.wikiwand.com › pt › Tempo_Médio_de_GreenwichTempo Médio de Greenwich - Wikiwand

    Tempo Médio de Greenwich (TMG) ou Greenwich Mean Time (GMT) em inglês, também conhecido por Hora de Greenwich, é a média do horário solar aparente no Observatório Real, em Greenwich, Londres.

  8. en.wikipedia.org › wiki › Time_in_the_United_KingdomTime in the United Kingdom - Wikipedia

    The United Kingdom uses Greenwich Mean Time (also known as Western European Time or UTC) and British Summer Time (also known as Western European Summer Time).