There is a sentence in Twenty-four solar term song about legal holidays.

The spring rain surprised the spring and the valley. This holiday is Tomb-Sweeping Day.

1, full text:

The spring rain shakes the spring and clears the valley, and the summer is full of mountains and summers.

Autumn dew, autumn frost, little snow in winter and cold in winter.

The two festivals remain unchanged every month, with a maximum difference of one or two days.

The first half of the year is June 2 1 day, and the second half is August 23.

2. Explain:

Beginning of spring, Spring Rain, Creeping, Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoshu and Dashu.

Beginning of autumn, first summer heat, white dew, autumnal equinox, cold dew, first frost, beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold.

There are two solar terms every month (the whole year), and the difference between the solar term time and the forecast time will not exceed one or two days.

In the first half of the year, the solar terms are generally on the 6th and 2 1, and in the second half, the solar terms are generally on the 8th and 23rd.

3. Place of origin:

As early as the Eastern Zhou Dynasty, the Spring and Autumn Period and the Warring States Period, the people of China had the idea that "the sun will arrive in the south" and "the sun will arrive in the north". Subsequently, people divided the year into 24 equal parts according to the natural phenomena such as the running position of the sun and the moon at the beginning and middle of the month, the weather and the growth of animals and plants. And give each equal part a proper noun, that is, twenty-four solar terms.

By the end of the Warring States Period, solar terms had eight names: beginning of spring, Equinox, Long Summer, Summer Solstice, beginning of autumn, Equinox, beginning of winter and Winter Solstice. These eight solar terms are the most important of the 24 solar terms. These eight solar terms mark the change of seasons and clearly divide the four seasons of the year. Later, when the book Huai Nan Zi was published, the names of the 24 solar terms were exactly the same as those of the modern ones.