直到1968年，格林威治子午线时间是全英国的标准时间。
Greenwich is known because Greenwich time, the time for the meridian of Greenwich, was, until 1968, standard time in Britain.
GMT是一种通用时区，是根据格林威治子午线，用设定时间所在位置的经度与其求差计算出来的。
GMT is a universal time zone, based on the Greenwich meridian corrected by the longitude of the location in which the time is set.
由此格林威治不仅作为起初子午线的所在地，也成为全球计算时区的基准线。
Greenwich thus became established as the location of the prime meridian of longitude, and the base line for calculating time zones around the world.
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 Observatoryin Greenwich）的平均太阳时间。
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 Observatoryin Greenwich）的平均太阳时间。
The International Meridien Conference of 1884 established Greenwich Mean Time, referring to the mean solar time at the Royal Observatory in Greenwich, near London.
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