Yes.Only estimat,we don't know the time,it has relation with the
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• It has relation with the rotation of the Earth. -jinjing- ♀ (0 bytes) () 08/15/2011 postreply 16:50:46
• It has relation with the rotation of the Earth. -jinjing- ♀ (0 bytes) () 08/15/2011 postreply 16:50:46