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三紀曆

三紀曆》,即《三紀甲子元曆》,是十六国后秦的历法。姜岌在白雀元年(384年)编制新曆法[1]

同年,姚苌命令全国颁布施行。共用三十多年。一年为日,一月[2]。采用十九年七閏法,首创用月食求算太阳位置的方法,比用漏壶测中星推定太阳位置要准确的多。

文內注釋

[编辑]
  1. ^ 晋书》律历志
  2. ^ s:晉書/卷018 日法六千六十二。為使十九年七閏,通數應為6063。應為傳鈔錯?
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三紀曆
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