Gregorian calendar: 2015101October 24th.

Lunar calendar: Saturday, September 12th of the lunar calendar.

Early frost season in three seasons

Jackals are sacrificial animals;

In this solar term, jackals will show their prey before eating;

Second, the vegetation is yellow; The leaves on the earth turned yellow and fell;

Three waiting stinging insects are salty; The stinging insects are motionless in the cave and hang their heads into hibernation.

The origin of the first frost

Every year around Gregorian calendar 10 year 10, when the sun reaches the longitude of 2 10 degrees, it is the first frost in the 24 solar terms. The first frost is the last solar term in autumn, which is the transition from autumn to winter. There is a lot of heat dissipation on the ground in autumn, and the temperature suddenly drops below 0 degrees. Water vapor in the air directly condenses on the ground or plants to form fine ice needles, and some become hexagonal frost flowers, which are white and loose in structure.

Where's Yi? Zhou Yue: "Mid-Autumn Festival in March: summer, autumnal equinox, first frost." "Mandarin? Zhou Yuzhong: "Seeing fire and breeze will stop the cold. Notes in the Three Kingdoms Wu: "It is said that there is wind after frost, so people should be prepared to keep out the cold." . "Wei Wei's" Oriental "Chapter 15:" In terms of solar terms, it is not yet the first frost, and there have been several frosts there. The ancient book "Twenty-four solar terms" said: "The first frost, the yin began to coagulate." Thus, the "first frost" refers to the cold weather and the beginning of first frost. Meteorologically, the first frost in autumn is generally called "first frost" or "first frost", and the last frost in spring is called "late frost" or "final frost". The interval from the last frost to the first frost is a frost-free period.

The first frost is the last solar term in autumn and also means the beginning of winter. Generally speaking, the first frost appears on the 23rd day of Gregorian calendar 10 every year. As can be seen from the perpetual calendar, the solar term of the first frost is 2065438+200565438+1October 24th.

What does the first frost mean?

"Twenty-four solar terms" said: "In September, the dew is cold and will condense." Cold dew means that the temperature is lower than that of the white dew, and the dew on the ground is colder and will soon condense into frost. In the cold dew season, Nanling and the vast area to the north have entered autumn, and the northeast and northwest regions have entered or are about to enter winter.

In ancient China, the cold dew was divided into three stages: "The first stage was the swan goose; Second, the sparrow enters the water and becomes a clam; Three chrysanthemums have yellow flowers. " In this solar term, geese move south in a line or herringbone; In the cold late autumn, all the birds disappeared. The ancients saw a large number of clams suddenly appearing on the seashore. The stripes and colors of shells were very similar to those of birds, and they thought they were birds. The third stage of "Chrysanthemum begins to blossom" means that the chrysanthemum has opened in a large area at this time.

What are the customs of the first frost?

In the cold dew season, you should eat more soft foods such as sesame, glutinous rice, japonica rice, honey and dairy products, and at the same time increase chicken, duck, beef, pig liver, fish, shrimp, jujube and yam to increase your physical fitness; Eat less spicy products, such as pepper, ginger, onion and garlic, because eating too much spicy food should hurt people. If you can cook a hundred dates and lotus seeds, it is also a good way to keep fit. Ginkgo porridge often drinks them and often eats some yams and horseshoes.

Since the "cold dew" season, there has been less and less rain, dry weather, hot days and cool nights. From the perspective of traditional Chinese medicine, the biggest feature of the southern climate is the "dry" season, which is the most likely to hurt the lungs and stomach. During this period, people's sweat evaporates quickly, so there are often dry skin, increased wrinkles, dry mouth and throat, dry cough and less phlegm, and even hair loss and constipation. Therefore, the focus of health care is to nourish yin and prevent dryness, moisten the lungs and benefit the stomach.