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-> 统天历

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ctext:793615

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typework
name统天历
authority-wikidataQ11606814
link-wikipedia_zh统天历
indexed-inwork:直斋书录解题直斋书录解题·卷十二》:《统天历》一卷
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统天历》是中国古代历法,南宋杨忠辅编纂,属于阴阳历。

宋宁宗庆元五年(1199年)历成,帝赐名为《统天历》,并于是年实施。

《统天历》计算出1太阳年为365.2425日,1朔望月为29.530594日,这一数值取代了祖冲之测量的365.2428日。与公历的1太阳年的数値相同。清人梅文鼎称「宋历莫善于纪元,尤莫善于统天」。然而,嘉泰二年(1202年)五月甲辰朔日蚀,《统天历》预推时刻比实际天象早了一个半时辰。《统天历》因推测日蚀不验,仅使用到开禧三年(1207年)。大理评事鲍浣之曾对《统天历》虚立上元一事大加挞伐,谓「以是而为术,乃民间之小历。而非朝廷颁正朔、授民时之书也。」于是,鲍浣之又造《开禧历》取代《统天历》。

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直斋书录解题1
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