本初子午线，世界时间的起点。
Starts to the prime meridian, becomes the world coordinates.
是的，这就是本初子午线，它把地球分为东半球和西半球。
Yes this is the…is the prime meridian if you like. The line that separates the eastern hemisphere from the western hemisphere.
本初子午线处于0度经度，而国际日期变更线处于180度经度。赤道处于0度纬度。
The prime meridian is at 0 degrees longitude, and the international date line is at 180 degrees. The equator is at 0 degrees latitude.
国际本初子午线大会于1884年把横过英国格林尼治天文台的一条经线定为参考线，在该线上经度为零。
The Greenwich meridian was adopted in 1884 by the International meridian Conference as the line with zero degrees of longitude.
国际本初子午线大会于1884年把横过英国格林尼治天文台的一条经线定为参考线，在该线上经度为零。
The Greenwich meridian was adopted in 1884 by the International meridian Conference as the line with zero degrees of longitude.
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