Zhongfu: July 26th (June 6th)-August 202014th (June 25th)?
Last day:15 August 2020 (June 26th)-August 24th 2020 (July 6th).
Extended data:
Dog days, one volt is ten days, counted by days. Therefore, the dog days are divided into three days, that is to say, after the third day of Gengtian, the summer solstice is the first day, the first volt. For example, the summer solstice in 2006 is June 2 1 in the western calendar year, and the dry day of this day is Xinri. 28 days later, it is the third Geng Day. Therefore, July 20, 2006 is the beginning of the first volt. Ten days later, it was another Geng day, that is, on July 30, it entered the second volt; Ten days later, it was another Geng day.
Moreover, it was the first Geng Day after beginning of autumn, that is, August 9, and entered the dog days; If it is 2007, July 15 is the third Geng day and the beginning of the first volt; Ten days later, it was another Geng day, that is, July 25, and it entered the second volt (middle volt); Ten days later, it's another watch day, but I haven't been to beginning of autumn yet. Ten days later (there are still 20 days in mid-autumn this year), it will be another Geng Day, the first Geng Day after beginning of autumn, that is, in August of 14, it will enter the dog days.
In other words, every year after the dog days, it is very hot, especially in the middle ten days (sometimes twenty days), which is the hottest. There is a folk saying that "the cold is in the March 9th and the summer heat is in the middle". A new algorithm in 265438+20th century —— Gengri formula: GR = (D-[Y/4]) MOD 10(GR Gengri, D even year 1 odd year 6, y year, [] rounding, MOD remainder) initial GR plus10.