The past life of the calendar (1)

The calendar is for the purpose of convenient use. The time is arranged in accordance with certain rules. It is gradually formed in human production and life. The year, month, and day are directly related to the operating cycle of the celestial body.

The ancients set the cycle (return year) of the four seasons for a long time, and the cycle (Shuangwangyue) of the moon profit and loss change was set as the moon.

Now we know that the return of the year is 365.2422, and the month is 29.5306. They are neither integer than the month, nor the integer multiple of the day. It is inconvenient to use.

Therefore, the year and month in the artificial regulations are all integer days. The year and month of this integer day are called years and calendar.

The ancients arranged the calendar according to the operating cycle of different celestial bodies. A nation had a calendar of a nation, and a calendar of an era.

The closer the times, the more advanced the test methods, the more scientific the calendar.

Most of the ancient calendars in my country use the traditional yin and yang calendar;

The calendar method of all ages was monopolized by the royal family.

Since Zhou Tianzi, it is necessary to "presented a confession" to the world, and the promulgation of the calendar must also hold a grand ceremony. On the one hand, these expressed the establishment of the imperial power, and on the other hand, the calendar of a certain dynasty is equivalent to the Zhengshuo of a certain dynasty. It is the subjects of a certain dynasty, and even the vassal countries around the surrounding areas. For example, the government in the Ming and Qing dynasties will promulgate calendar books to North Korea, Ryukyu and other countries. Like Taiwan, it is still said how many years of the Republic of China.

There are more than a hundred calendars that have been used from ancient times to today. However, no matter how many calendar methods, they can be attributed to the following three major systems: solar calendar, lunar calendar, yin and yang calendar, and what we call the lunar calendar is actually the yin and yang calendar.

*Picture from the Internet

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