Traditional Culture Encyclopedia - Traditional culture - How is the lunar calendar calculated?
How is the lunar calendar calculated?
The lunar calendar uses the time when the moon is full or full once as a month, ****29 days and a half. For ease of counting, the big month is customized to be 30 days and the small month 29 days, with the big and small months roughly alternating throughout the 12 months of the year. There are about 365 days in a lunar year, and there is no difference between a flat year and a leap year.
The lunar calendar does not take into account the orbit of the earth around the sun, thus making the change of seasons in the lunar calendar will not have a fixed time, it can not reflect the seasons, which is a great disadvantage. In order to overcome this shortcoming, people later set a new calendar, which is the so-called lunar and solar calendar. The summer calendar (also known as the lunar calendar or the lunisolar calendar), which is still in use in China, is this kind of lunisolar calendar. It is the same as the lunisolar calendar, with the time of the moon's fullness and shortness as one month, that is, 30 days in the big month and 29 days in the small month, but it also adjusts the four seasons by adding intercalary months, so that the average number of days per year is close to the number of days of the whole year in the lunisolar calendar. In the lunar calendar, there is a leap month about every two or three years. ~
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