月令作为中国古代的“时宪”之书,是一种以自然时间为依托、人为设计的时间规范。《续汉书·律历志》称:“若夫用天因地,揆时施教,颁诸明堂,以为民极者,莫大乎月令。”月令在汉晋史家眼中的地位由此可见一斑。上古时期月令版本众多,主要有《夏小正》、《逸周书·时月解》、《吕氏春秋》“十二纪首”(下文简称《吕纪》)、《淮南子·时则》及《礼记·月令》等文献,其中后三篇内容大同小异。 As an ancient Chinese book of “Constitution of the Times”, the monthly order is a kind of time specification that is based on natural time and man-made design. “Continuation of Han law calendar”, said: “Ruofu days with the sky, when Shi teach, promulgated the Ming Church, that the people of pole, Mo big order.” “Order in the eyes of Han and Jin historian from This is evident. There are many versions of the lunar calendar in ancient times, including ”Xia Xiaosheng“, ”Yi Zhou Zhou Shiyue“, ”Lu Shi Chun Qiu“ ”Twelve Ancestors “ (hereinafter referred to as ”Lu Ji“ Then ”and“ Book of Rites · month order ”and other documents, of which the latter three are more or less the same.