说起历法,我国古代对其的研究、应用,都是世界闻名的.我国在公元前21世纪的帝尧时代,就规定一年为366天.春秋末年,我国开始将一年分为365.25日,比西方早100多年,还规定一个月为29.53085日,也极精密.到南北朝时,祖冲之制定的大明历规定一年取365.2428日,它与现在世界上通用的阳 Speaking of the calendar, the research and application of ancient China were all world-famous. In the era of emperors in the 21st century BC, it was stipulated that the year was 366 days. In the late spring and autumn, China began to divide the year into 365.25 days. , more than 100 years earlier than the West, also stipulated that one month is 29.53085 days, also extremely precise. When the Southern and Northern Dynasties, Zu Chongzhi set the Ming Dynasty calendar to take 365.2428 days a year, it is now universal with the world