阴历（英语：lunar calendar）又称太阴历，拉天文学中搭阳历对应，指主要按月亮个月相周期来安排个历法；弗据地球围绕太阳公转轨道位置。渠个一年有12个朔望月，约354或355日。主要根据月亮绕地球运行一周辰光为一个月，称为朔望月，大约29.530588日，分为大月30日、小月29日。
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