炎帝神农氏“七曜起于天关”的年代

关于炎帝的历法,宋·罗泌在<路史>中记载:"三朝具于摄提,七曜起于天关,所谓太初历也."这里,"三朝"指年月日;"撮提"即摄提格,是指地支中的寅,"七曜"为日月五星.这说明炎帝创制的<太初历>起始日那天.为寅年寅月寅日,日月五星会聚在一起,并且是从"天关"星开始.通过天文年代学的计算和分析,可以确定公元前4 951年3月28日为炎帝<太初历>的起始日.

The Time of "Seven Luminaries Originate from Sky Door" of Shennong of Yan Emperor

As to Yan emperor''s calendar, Luo Qin of the Song dynasty recorded m Road History, "three times have conductors and seven luminaries originate sky door, which are the Taichu Calendar". "Three times" refer to year, month and day; "Sheti" refers to Sheti year that is the Yin in terrestrial branch, and "seven luminaries" refers to sun, moon, and five stars. As a whole, it means that, from the day of Yan emperor''s creation of taichu calendar, which is Yin year Yin month and Yin day and the sun, the moon and the five stars will come together and it begins from the "sky door" star. Through the account and the analysis of astrochronology, it can decide the beginning day of Yan emperor''s in taichu calendar is the 28th 3,4951 BC.