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jan 1, 462 - 祖冲之编制大明历

Description:

《大明历》是中国历法史上第二次重大改革，祖冲之首次引入“岁差”概念使历法更精确。

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中国历史年表

12 Sep 2020

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2130

Date:

jan 1, 462

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~ 1565 years ago

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