What does sunrise mean on August 20th?
"Going out" is one of the 24 solar terms, marking the last ten days of summer, and also marking the gradual passing of hot weather and the arrival of cool autumn. Sunrise on August 20, 2023 means that the dog days are over. In the Yuan Dynasty, Dai Li Weng, a bamboo and rattan poet, wrote a poem: "Silkworms are urged out when they sleep for one or two hours, and seedlings with three or four leaves are still worried about the wind", which is a record of eclosion in ancient poetry.
After coming out, the weather is getting colder, it is cooler in the morning and evening, and it is still hot at noon, which will be different in each area. Because it is already in beginning of autumn, even the so-called "autumn tiger" is hot during the day and cool in the morning and evening. Of course, there will be exceptions, but that is an abnormal phenomenon encountered after a few years.
The essence of dog days
The dog days, which appear between the summer heat and the summer heat, are the period with the highest temperature, the highest humidity and the most severe sultry heat in a year. Three volts can be divided into initial, middle and final volts, and its date is determined by the coordination of 24 solar terms and the dates of dry and branch. After "entering the volt", many places in the country will enter the continuous high temperature mode.
The length of dog days mainly lies in the difference between middle and next days. Because the third Geng day (the first autumn) after the summer solstice solar term occurs at different times every year, the number of days in the middle autumn is also different. The incubation time is long or short, which may be 10 day or 20 days. So there are two situations: some years are 30 days in dog days, and some years are 40 days. The above contents are for reference only.