Ancient lunar and solar calendars guide what activities

The ancient lunisolar calendar guided agricultural activities.

The yin-yang calendar was used for general chronology, and the 24 solar terms were used to guide agricultural production.

China's traditional calendar also employs a unique system of chronology - the Heavenly Stems and Earthly Branches. China's traditional calendar is generally known as the lunar calendar.

Lunar and Solar Calendar

The so-called lunar and solar calendar is that it requires the calendar month to be basically in line with the lunar month and the calendar year to be basically in line with the year of return, and it is the calendar that harmonizes the cycles of the sun, the earth, and the moon, and it is the calendar that synthesizes the advantages of the lunar and solar calendars, and harmonizes the contradictions between the lunar and solar calendars.

The yin-yang calendar was formulated as early as the Xia Dynasty in China, so it has long been called the "Xia calendar" in history. This calendar has twenty-four seasons to guide agricultural activities, and is mainly used in the rural areas, so it is called the "lunar calendar", also known as the old calendar, the Chinese calendar, and folk also known as the lunar calendar.

The lunar calendar takes the date of the first day of the month, the first day of the month, as the first day of the month, and also takes the time of the first day of the month as the average time of the calendar month. In this respect, it is the same as the pure lunar calendar, but it utilizes the method of setting up intercalary months and the method of the twenty-four solar terms to make the average length of the calendar year equal to the year of return, so that it has the components of the solar calendar, so it is better than the pure lunar calendar.

The lunar calendar basically uses 12 months as a year. ***354 or 355 days, which is about 11 days difference from the regression year. That's an extra 33 days every 3 years, or an extra month or so. In order to eliminate the extra She days, 1 month is added every 3 years, which is a leap month in the lunar calendar. The disadvantage is that the difference between the number of days in a normal year and a leap year is too large. In the lunar calendar, there are 354 or 355 days in a normal year, and 383 or 384 days in a leap year.