What is the lunar calendar for?

The role of the lunar calendar is mainly to use the 24 solar terms to guide the management of crop harvesting.

The China lunar calendar is a very simple and practical China lunar calendar, which is specially designed for China people. It can show the traditional heavenly stems and earthly branches and the twenty-four solar terms in ancient China.

The lunar calendar is based on the lunar calendar (summer calendar) and the solar calendar, combining yin and yang. Taking the change period of the moon phase as the length of the month, plus the "24 solar terms" component of the dry calendar, and referring to the length of the tropical year of the sun as the year, the average calendar year is adapted to the tropical year by setting leap months. Therefore, the lunar calendar has both lunar and solar elements. Unlike the fixed solar year of 365 days or 366 days, the solar year sometimes differs from the lunar year by about 10~20 days. In order to coordinate the number of days between the tropic year and the first month of the lunar calendar, the lunar calendar came into being.