The lunar calendar is the lunar calendar, right?

The lunar calendar is not a lunar calendar.

"Lunar calendar" is a more generalized calendar concept, which calculates the date according to the period of the moon, so it is also called the monthly calendar. The basic calendar rules of "lunar calendar" have been gradually improved through generations, and its form has continued from 1970 to this day.

The lunar calendar is usually mistakenly called the lunar calendar among the people, but it actually belongs to the yin-yang calendar. The lunar calendar is a calendar that combines the relationship system of the sun, the moon and the earth, and it takes into account the relationship system of the sun, the moon and the earth. So the lunar calendar is not a pure lunar calendar, but is included in the concept of the lunar calendar.

Calendar is a rule to predict the coming season according to the natural laws of astronomical changes and climate changes. Calendar one can be divided into four types, namely, lunar calendar, solar calendar, ephemeris and yin and yang calendar. Among them, the moon as the basic unit belongs to the lunar calendar, the solar year as the basic unit belongs to the solar calendar, and the rotation of the Big Dipper as the basic unit belongs to the ephemeris.

The difference between lunar calendar and solar calendar

The so-called lunar calendar and solar calendar are two different calendar calculations, and their reference objects are different. The lunar calendar, which is often said, is based on the moon. People call the moon's time around the earth "lunar month", with a period of about 29.53 days. For the convenience of conversion, the big month is 30 days and the small month is 29 days. The solar calendar is based on the sun, and the time for the earth to go around the sun is called the "solar year", which is about 365.25 days. Divided into 12 months, each month is about 30.44 days.

Because the moon is closer to the earth, it is easy to observe. Therefore, in ancient times, the "lunar calendar" was more widely used, such as eight-character fortune telling, marriage, building a house to see the sky, and the old calendar was based on the "lunar calendar".

In the folk, birthdays are basically based on the "lunar calendar", especially in rural areas, birthdays are basically calculated according to the lunar calendar; People in the city prefer birthdays in the solar calendar, but in modern times, they are not very particular about it. Even the birthdays of the lunar and solar calendars should be celebrated.

The lunar calendar is very important, but the solar calendar is not without its merits. 24 solar terms, like us, is divided according to the solar calendar. One revolution of the earth around the sun is 360 degrees, which is divided into 24 parts on average, each part is 15 degrees. So every revolution of the earth is 15 degrees, which is a solar term.

Careful friends may observe that the time of the lunar calendar is about eleven days worse than that of the solar calendar every year. If calculated completely according to the lunar calendar, we will spend spring in summer in five years.

Baidu encyclopedia-lunar calendar