What is the name of the lunar calendar?

The lunar calendar is also called summer calendar, lunar calendar, old calendar, middle calendar and lunar calendar.

Lunar calendar, the traditional calendar of China. According to the cycle of the moon phase, each moon phase changes to one month; A tropical year is divided into 24 segments, forming 24 solar terms. By referring to the tropic year of the sun, leap months are set to adapt their average calendar year to the tropic year. The lunar calendar combines the lunar calendar with the solar calendar to form a method of combining yin and yang.

Month nickname

The first month of the lunar calendar is customarily called the first month. November and December of the lunar calendar are called winter and twelfth months respectively, but winter months are rarely used. This is the origin of the idiom "winter", which literally means that October, November and December are the coldest months of the year.

The first ten days of a month in the lunar calendar are customarily called the first day in turn, such as the second day of the first month called the second day of the first month; The number of days directly used from the 11th to the 20th and 30th, such as the 15th day of the first month (Lantern Festival), is called the 15th day of the first month.

The 2nd1to 29th days are customarily called 20th days in sequence, and some of them are called anniversaries. For example, the 22nd day of the first month is called the 22nd day of the first month or the 2nd day of the first month. Every month of the lunar calendar has a different nickname.