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来自维基百科,自由的百科全书
齊文宣帝天保元年(550年)編撰齊歷,規定1太陽年==365.24459日(歲實)、1朔望月=日=29.53059955...日(朔策)。一近月點為日=29.554483日,一交點月缺,《天保曆》從天保元年施用至齊幼主承光元年(577年),共二十八年。
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