Is the ancient year of China the same as that of foreign countries? What does this have to do with the current lunar calendar and solar calendar?

China's own calendar is a combination of yin and yang. In the lunar calendar, the moon orbits the earth for 29 and a half days, and in the solar calendar, the earth orbits the sun for 365+438+0 days. This calendar uses heavenly stems and earthly branches to record the year, month and day, which is called "heavenly stems and earthly branches calendar" and commonly known as "eight-character" calendar, both of which are inseparable from the 24 solar terms. 24 solar terms is divided into 12 solar terms and 12 solar terms. ), in which the solar term 12 is the first day of a month in heavenly stems and earthly branches chronology, and the qi of 12 is related to the leap of the lunar calendar, which is called the law of neutral qi leap. The twenty-four solar terms, together with the China lunar calendar and the chronology of the main branches, are called the lunar calendar.

In terms of chronology, the dates and hours of the emperor's calendar, the lunar calendar and the official calendar were used in the ancient history of China (by the time of the Republic of China, the calendar was used to record the month and day, and the new China completely adopted the Gregorian calendar to connect with the international community). For example, in the 26th year of Guangxu, namely 1900, he was in Gengzi (also called Guangxu Gengzi), which was the year when Eight-Nation Alliance entered Beijing. For example, in the eighteenth year of Hongzhi, that is, AD 1505, etc.

For example, in the eighteenth year of Hongzhi, Bingzi was born in autumn and August. Need to calculate.

In the eighteenth year of Hongzhi, namely 1505, heavenly stems and earthly branches was an ugly year.

Autumn and August are the lunar calendar. According to the law that the lunar calendar of 19 overlaps every leap month, 1505 and 1999 basically overlap or have an error of plus or minus one day, which should be from the middle and late September of 10 to the beginning of 10.

On the third day, the average year is pushed back by 5 days, and the leap year is pushed back by 6 days. The period from 1505 to 1999 * * is 494 years, in which 120 leap years (there are 97 leap years every 400 years, 23 leap years in the remaining 94 years, and * * is 65430.

The autumn and August of 1999 is September 2 1, and 10 days later. The autumn and August of 1505 should be September 1 1.

September 1 1 According to the chronology of heavenly stems and earthly branches, it should be a unitary month. But the unitary month of the ugly year must be the unitary month.

According to the above rules, in addition to the accuracy of the ancient calendar, the dates of autumn and third day of August in the eighteenth year of Hongzhi should be:

1September 505 1 1,

The second day of the eighth lunar month

Heavenly stems and earthly branches: Ugly year, the first month, the third day.

Because 1505 was changed before 1582 was changed to the Gregorian calendar, it is necessary to add the truncated 10 days, which should be:

1September 2, 5051,

The second day of the eighth lunar month

Heavenly stems and earthly branches: Ugly year, the first month, the third day.