The International Meridien Conference of 1884 established Greenwich Mean Time, referring to the mean solar time at the Royal Observatory in Greenwich, near London.

1884年，国际子午线大会确立了格林威治标准时间（GMT），即伦敦附近的格林威治皇家气象台（the Royal Observatory in Greenwich）的平均太阳时间。

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Greenwich mean time (GMT) is mean solar time at the Royal Greenwich Observatory in Greenwich, London, England, which by convention is at 0 degrees geographic longitude.

格林尼治国际标准以英国伦敦格林威治皇家天文台为准，也就是零经度为准。

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John Harrison's clocks can be seen today at the Old Royal Observatory in Greenwich,England.

VOA: special.2010.07.14

In 1675, the foundation stone of the Royal Observatory was laid at Greenwich in south London by order of King Charles II, to improve knowledge of the positions of stars and thus aid navigation.

CNN: Sunday,

The UK has one other such station as the Royal Greenwich Observatory in East Sussex.

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