Are the 24 solar terms lunar or solar?

The twenty-four solar terms of the lunar calendar belong to the lunar calendar.

1 and 24 solar terms are traditional calendars in China, and 24 solar terms is a supplementary calendar established in the pre-Qin period and completely established in the Han Dynasty to guide farming.

The lunar calendar is based on the laws of the moon and the earth. There is a one-year gap with the revolution of the earth, which is made up by the leap month, so it belongs to the twenty-four solar terms of the solar calendar and is cloudy. The twenty-four solar terms are divided according to the lunar calendar, and the twenty-four solar terms originated in the Yellow River basin. As early as the Spring and Autumn Period, four solar terms were set, namely, mid-spring, mid-summer, mid-autumn and mid-winter.

3. The solar calendar, also known as the solar calendar, is based on the apparent movement of the sun, and the time for the earth to go around the sun is one year. Its length is 365 days, 5 hours, 48 minutes and 46 seconds.

4. Twenty-four solar terms are based on the earth's revolution around the sun, and every time the earth moves forward 15 degrees (about 15 days), there are * * * twenty-four solar terms throughout the year.

5. Twenty-four solar terms are known as "the fifth invention of China" in the international meteorological field.