Purple Mountain Observatory Yearbook

There is no Nanjing Observatory, only the Purple Mountain Observatory. By the way, it is not the Nanjing Purple Mountain Observatory, but the National Purple Mountain Observatory.

The Purple Mountain Observatory publishes an astronomical calendar every year, but it is not a yellow calendar, and there will never be any information about the location of the god of wealth, what is auspicious and what is taboo.

If there is no fur in the skin, there will be no hair, and these things will naturally disappear.

However, there is a considerable space in the astronomical almanac to calculate the position of the planets, and when the planets will go straight and stay in a horrible calendar (what is the longitude and latitude of the planets at a certain moment? The eight planets give data every ten minutes, accurate to 0. 1 ").

Baidu introduced the concept of seven capitals and four capitals. To put it bluntly, the sun, the moon and the five stars all rush to that star. This is actually a relatively rough occupation, and the data in the astronomical calendar can definitely be seen.