Is it the beginning of the summer when it's so hot?, Many parts of the country are facing high temperatures | Geng Day | Weather
Since mid June, many parts of the country have experienced high temperatures, with some areas breaking historical records for extreme high temperatures during the same period. Is this scorching heat entering the summer heat?
Astronomical science popularization experts have clearly stated that there is still some time before the onset of the lunar eclipse. The official start of the summer solstice began on July 11th, and this year's three solstices are still 40 days. This is also the ninth consecutive year since 2015 when the dog days have lasted for 40 days.
The Sanfu period can be divided into the initial, middle, and final periods. As the saying goes, "heat occurs during the Sanfu period.". Xiu Lipeng, a member of the Chinese Astronomical Society and an expert in astronomy popularization, introduced that the date of Fu was calculated by ancient Chinese people according to the Ganzhi Jiri method. Gan is the heavenly stem, namely A, B, C, D, V, Ji, G, Xin, Ren, and Gui; Zhi is the earthly branch, namely Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, and Hai. The ancients used a combination of heavenly stems and earthly branches to represent dates, with 60 representing a cycle, known as 60 Jiazi.
As the saying goes, "On the third day of the summer solstice, there will be several fu days." This means that the third day of the geng day after the summer solstice is the first day of the first fu day.
This year's summer solstice falls on June 21st according to the Gregorian calendar. Starting from the summer solstice, the first Geng day is June 21st; The second Geng Day is July 1st; The third Geng Day is July 11th, so July 11th became the starting day of this year's early summer.
The duration of the first summer solstice is fixed at 10 days, so this year's first summer solstice is from July 11th to July 20th; Last Fu is the first Geng day after the beginning of autumn. This year, the beginning of autumn falls on August 8th, and the first Geng day found afterwards is August 10th, which is the first day of the apocalypse. The duration of the last summer solstice is also fixed at 10 days, so this year's solstice is from August 10th to August 19th.
The time between the beginning and end of the summer is the mid summer. Depending on the timing of the Geng day, the time left for the mid summer must be 10 or 20 days. Therefore, the duration of the entire three summer months must be 30 or 40 days. This year's midsummer will last for 20 days from July 21st to August 9th.
However, whether the weather is hot or not is uncertain and will not be affected by the late or early arrival of Geng Day. Xiu Lipeng stated that traditions such as counting fu and counting jiu were simple rules summarized by ancient people based on their life and labor experience. They can to some extent reflect actual weather changes and guide life and production. Nowadays, they have become a part of traditional culture. However, due to the vast territory of our country, coupled with the long-term fluctuations in climate change and the exacerbation of human activities caused by global warming, the "error" has long exceeded the calculation rules of the "three highs".
