What is the lunar calendar and what is the lunar calendar?

The lunar calendar is a calendar based on the lunar calendar (summer calendar) and integrating the solar calendar. Therefore, strictly speaking, the lunar calendar in China should not be called the lunar calendar, but the combined calendar of yin and yang. Its years are divided into normal years and leap years. An average year is twelve months; A leap year is thirteen months. A month is divided into a big month and a small month, with 30 days in the big month and 29 days in the small month, and its average calendar month is equal to the full moon.

In astronomy, the lunar calendar mainly refers to the calendar arranged according to the moon phase cycle, in which the moon orbits the earth once (based on the sun, the actual moon orbits more than once). ) is January, that is, the calendar based on the moon, with twelve calendar months in a year.

Lunar calendar is one of the traditional calendars in China, also known as lunar calendar, ancient calendar, Han calendar, yellow calendar, summer calendar and old calendar. The lunar calendar, also known as the lunar calendar, takes the moon's orbit around the earth as a month and the earth's orbit around the sun as a year. This calendar was adopted in China before the first year of the Republic of China, so it is called the old calendar.