What is the lunar calendar and the lunar calendar? What else is there?

1. Lunar Calendar

The lunar calendar is our country’s traditional calendar, and it also has names such as the lunar calendar, the Chinese calendar, the summer calendar, the Chinese calendar, and the Chinese calendar. The lunar calendar is not a pure lunar calendar, but a lunisolar calendar. The changing cycle of the moon phase, that is, the synodic month, is the length of the month, and the "twenty-four solar terms" of the stem and branch calendar are added. The solar return year is the length of the year. By setting the leap month To make the average calendar year fit with the tropical year. The lunar calendar is a calendar based on the lunar calendar (Xia calendar) and integrating elements of the solar calendar. Therefore, our country's lunar calendar should not be called a lunar calendar in a strict sense, but a luni-solar calendar.

The lunar calendar is a luni-solar calendar: its years are divided into ordinary years and leap years. There are twelve months in an ordinary year and thirteen months in a leap year. The month is divided into a big month and a small month. The big month has thirty days and the small month has twenty-nine days. The average calendar month is equal to one synodic month. Which month of the year is larger and which month is smaller is determined by calculation.

The lunar calendar is a calendar that takes into account the relationship between the sun, the moon and the earth. The lunar calendar does not take into account the movement of the earth around the sun, so the changes in the four seasons have no fixed time on the lunar calendar and cannot reflect the seasons. Unlike the Gregorian calendar year, which is fixed at 365 or 366 days, the lunar calendar year sometimes differs by one month from the solar calendar year. In order to coordinate the number of days between the lunar calendar year and the solar calendar year, the "leap method" is used. Adjust the total number of days in the lunar calendar to the total number of days in the solar year.

2. Lunar Calendar

In astronomy, the lunar calendar mainly refers to the calendar arranged according to the moon's lunar phase cycle, with the moon orbiting the earth (using the sun as a reference, the actual movement of the moon More than one week. ) is one month, that is, a calendar in which the synodic month is used as the basis for determining the calendar month, and the year is divided into twelve calendar months. During the development and evolution of the calendar, the emergence of the twenty-four solar terms was used to scientifically guide agricultural production, forming the lunar calendar (Han calendar). Although the lunar calendar and the lunar calendar are commonly known as the ancient calendar, the Chinese calendar, the summer calendar, and the old calendar, there are differences between the lunar calendar and the lunar calendar (Han calendar). The traditionally used summer calendar (Han calendar) is actually a lunisolar calendar.

3. Gregorian Calendar

The solar calendar, also known as the solar calendar, is a calendar based on the movement cycle of the earth revolving around the sun. The calendar year of the solar calendar is approximately equal to the tropical year, with 12 months in a year.

Other calendars include: Gregorian calendar, Ganzhi calendar, etc.

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