The difference between the original calendar and the chronograph calendar

The difference between the original calendar and the chronograph calendar

1. The early years of the Western Han Dynasty followed the Zhuan Xu calendar of the Qin Dynasty.

2. However, there are some mistakes in Zhuan Xu Calendar.

3. In BC 104 (the sixth year of Yuanfeng), Emperor Wu of the Han Dynasty ordered the calendar to be changed at the suggestion of Sima Qian and others.

4. In BC 104, astronomers Luo and others made a calendar.

5. taichu calendar law stipulates that a year is equal to 365.2502 days, and January is equal to 29.53086 days; Change October as the beginning of the year to the first month of the year; Beginning to adopt twenty-four solar terms that are beneficial to agricultural time; Take the month without neutral gas as leap month to adjust the contradiction between the sun and the lunar calendar.

6. This is an epoch-making progress in the history of China.

7. The taichu calendar method also drew a solar eclipse cycle of 135 months based on astronomical observations and years of records by historians.

8. taichu calendar is not only the first relatively complete calendar in China, but also the most advanced calendar in the world at that time. It has been used for 189 years since it came out.

9. taichu calendar law stipulates that a year is equal to 365.2502 days, and January is equal to 29.53086 days; Change October as the beginning of the year to the first month of the year; Beginning to adopt twenty-four solar terms that are beneficial to agricultural time; Take the month without neutral gas as leap month to adjust the contradiction between the sun and the lunar calendar.