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如何判断立秋时间

更新时间: 2020-11-06 00:00:00     

立秋时间根据[Y*D+C]-L算出,公式解读,Y=年数后2位,D=0.2422,L=闰年数,21世纪C=7.5,20世纪=8.35,立秋是二十四节气中第13个节气,北斗星斗柄指向西南,太阳到达黄经135°,于每年公历8月7-9日交节,立秋是秋季的第一个节气,为秋季的起点。

关键词: 如何 判断 立秋 时间

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