What are the solar terms behind the first frost?

The first frost was followed by the solar terms in beginning of winter. Beginning of winter is on165438+1October 7th or 8th in the Gregorian calendar every year, which is19th in the 24 solar terms. The first frost indicates that autumn is coming to an end, and beginning of winter indicates that winter is about to begin. Therefore, the first frost and beginning of winter are transitional solar terms. Traditionally, our people think that this day is the beginning of winter. Winter, as the end, means that after a year of field work, crops will be harvested.

After beginning of winter, the sunshine time will continue to shorten, and the height of the sun will continue to decrease at noon. In winter, northeast winds and north winds prevail, and the temperature drops gradually. Because there is still some energy in the heat stored on the surface, it is generally not very cold in early winter. As time goes by, strong cold air frequently goes south and crosses Nanling, and the weather is getting colder and colder. In the north, it is already very cold before winter begins.

Twenty-four solar terms refer to twenty-four specific festivals. They are: beginning of spring, Rain, Surprise, Spring Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Slight Summer, Great Summer, beginning of autumn, Chu Summer, Bailu, Autumn Equinox, Cold Dew, First Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.