远古时代的埃及,勤劳智慧的劳动人民,在长期与尼罗河洪水泛滥斗争的实践中,积累了丰富的科学知识。在天文学方面,发现了天狼星的出现,预兆着尼罗河洪水期即将来临!进而按照天狼星的出现与隐没,创造了人类社会最早的年历。我们伟大的祖国,同样有着辉煌灿烂的文化历史。现在还使用着的农历,就是早在四千多年以前的夏朝,劳动人民按照月相的盈亏、寒暑时令,创造了她的最初雏型,因此,农历的另一个名字又叫做夏历。下面将介绍的日历,发现在三亿五千万年前的泥盆纪,这种日历 In ancient times, Egypt, a hard-working and wise working people, accumulated abundant scientific knowledge in the long-term practice of fighting the flood of the Nile. In astronomy, Sirius was discovered, premonition of the upcoming Nile flood, and in accordance with the appearance and disappearance of Sirius, created the earliest almanac of human society. Our great motherland also has a splendid cultural history. The lunar calendar that is still in use is the Xia Dynasty as early as 4,000 years ago. The working people created her initial prototype according to the profit and loss of the moon phase and the summer and winter seasons. Therefore, another name in the lunar calendar is also called the lunar calendar. The following calendar will be introduced, found in Devonian, 350 million years ago, this calendar