Which solar term does the volt start from?

Accommodation in dog days begins with the solar term from summer to Sunday. According to the traditional calendar, "summer solstice and sunset are on the third day", that is to say, it begins to fall on the third day of summer solstice. Summer refers to the dog days prefixed with "Geng" in Zhizhi, which occurs between high temperature and hot summer, and is the highest, wettest and sultry time of the year. The three days are divided into morning, middle and evening, and the date is determined by the coordination of solar terms and solar terms in the calendar. After "entering the volt", many places in the country will enter the continuous high temperature mode. [3] [6] According to the traditional almanac, "summer falls on the third Geng Day", which means that the countdown begins in summer and begins to decline on the third Geng Day. The "Geng Day" here refers to the days prefixed with "Geng" in the ancient "Ganzhi Jiri Law". "Fu" means that Yin Qi was forced by Yang Qi to hide underground; This also means that it is too hot to move. [4] [12] The length of midsummer is mainly due to the difference between midsummer and midsummer days. Because the time of the third Geng day (the first autumn) after the summer solstice solar term is different every year, the number of days in the first autumn is also different. Summer is long and short, which may be 10 days or 20 days. So there are two situations: some years are 30 days and some years are 40 days. [7-8