Set the meaning of leap month

Leap month is an adjustment between the lunar calendar and the tropic year in our calendar. The function of leap month is to prevent the whole time from being confused by the last of the lunar calendar and the twenty-four solar terms. Leap month does not exist every year.

China lunar calendar is a kind of calendar that reconciles the relationship between lunar calendar and solar calendar, taking into account the movement cycle of the moon around the earth and the earth around the sun, and it is a kind of yin-yang calendar. Lunar month is based on the orbit of the moon around the earth, and the length of lunar year is based on the orbit around the sun.

The adjustment function of leap moon is a very important thing for the ancients. Ancient farming civilization, underdeveloped technology. Leap month is used to mediate the relationship between the tropic year and the calendar, so that agricultural development will not be misled by the calendar.