Greenwich thus became established as the location of the prime meridian of longitude, and the base line for calculating time zones around the world.
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 is known because Greenwich time, the time for the meridian of Greenwich, was, until 1968, standard time in Britain.
直到1968年，格林威治子午线时间是全英国的标准时间。
GMT is a universal time zone, based on the Greenwich meridian corrected by the longitude of the location in which the time is set.
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.
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。
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