Which comes first, the cold dew or the white dew? What is the temperature of the cold dew?
Twenty-four solar term song
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.
Autumn solar terms
Beginning of autumn: refers to the southwest; Is the solar line 135? . Gregorian calendar 07-09 August. Beginning of autumn is the beginning of applying for the moon in the official calendar.
Summer: fighting fingers; Is the solar line 150? . August 22-24 of Gregorian calendar.
White dew: fighting finger; Is the solar line 165? . Gregorian calendar 07-09 September. Millennium is the beginning of a single month in the dry calendar.
Autumnal equinox: the bucket refers to itself; Is the solar line 180? . Gregorian calendar September 22-24.
Cold dew: fighting nails; Is the solar line 195? . Gregorian calendar 18-09 10 month. Cold dew is the beginning of the full moon in the dry calendar.
First frost: fingers; Is the longitude of the sun 2 10? . Gregorian calendar 65438+1October 23-24.
It can be seen from the contents of the solar terms in Song and Autumn that the Bailu solar term comes before the Cold Dew solar term, and the Cold Dew solar term arrives later. The cold dew time in 2020 is June 8 10 in the new calendar, while the white dew time is September 7, which is one month late. What is the temperature of the cold dew?
From June 5th to 10, the regional difference of the average temperature distribution in China is obvious. The average temperature in most parts of South China is above 22℃, and it is even higher in Hainan, which is above 25℃, and it has not yet come out of summer. Jianghuai and Jiangnan are generally between 15℃ and 20℃, and the southeast, North China and Huanghuai are between 8- 16℃. At this time, the average temperature in parts of the northwest and north-central northeast has reached below 8℃. The average temperature in some plateau areas of Qinghai Province is even lower than 0℃.
In normal years, the 10℃ isotherm of cold dew at this time has moved southward to the Huaihe River in Qinling Mountains, and generally dropped below 0℃ to the north of the Great Wall. The first frost can be seen in most years in Beijing, the capital. In addition to the perennial snow on the Qinghai-Tibet Plateau, it has generally begun to snow in the northeast and northern Xinjiang. Analysis on the meaning of solar terms of cold dew and white dew;
About cold dew:
The climate is pleasant and cold, and it is also very suitable for mountain climbing. At this time, the autumn is thick and the weather is sunny, which is suitable for going out to enjoy autumn, especially for climbing mountains. In September Festival, cold dew, first frost and double ninth festival arrive, and the most beautiful sunset is red.
About the Millennium:
In China, there is a custom of collecting and removing dew during the Millennium solar terms. Li Shizhen's Compendium of Materia Medica in the Ming Dynasty records that when there are many autumn dew, it is collected in a plate and fried like a cake, which makes people not hungry for many years. The autumn dew on the head of a hundred herbs, collected when it is not wet, will cure all diseases, quench thirst, make people light but not hungry, and make muscles comfortable.
The flower dew is outside, which is a good color. Therefore, dew removal has become the most special ceremony in the Millennium.