What days do "dog days" and "dog days" refer to respectively?
The dog days are the hottest, wettest and sultry days of the year, which occur between mild high temperature and severe high temperature in summer.
It can be said that it is too hot to lie still. It is the hottest 30-40 days in a year in the Central Plains, and it is between mid-July and early August in the solar calendar according to the lunar calendar.
The time of accommodation is not fixed every year, and the length of accommodation is also different. You need to check the almanac to calculate it. To put it simply, we can use the formula of "the third boxer in the summer solstice" to express the lodging date, that is, from the third boxer day after the summer solstice, the initial lodging is 10 day, the intermediate lodging is 10 day or 20 days, and the final lodging is 10 day. 60 groups of different names, consisting of 10 aerial stems and 12 aerial branches, are used for recording dates and recycling. A day with the word "Geng" is called "Gengri". The word "Geng" in Geng Ri is "A, B, C, D, E, Ji, G, Xin, Man, Ghost" 10. The 4th Geng Day is in the middle, and the 1 Geng Day after beginning of autumn is the last. When there are four Geng days between the summer solstice and beginning of autumn, the middle is 10, and when there are five Geng days, the middle is 20 days. It seems that the emergence of Geng Day will affect the length of transit, so there are 30 days in the sky in some years and 40 days in some years.
Dog days, one volt is ten days, according to the number of dry days. Therefore, the dog days are divided into three days, that is, the third day after the summer solstice is the beginning day of 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, and the third day is 28 days later. Ten days later, it was another Geng day, that is, July 29, and it entered the volt; Ten days later, it was another Geng day, that is, August 9, and it entered the dog days.
27 days. According to the traditional calendar of our country, every nine days is a time period from the winter solstice, which is the "nine" opposite to the summer "volt"; There are nine sections, the first nine days are called 19, and the last nine days are called 29, 39, ... 99, which are collectively called "99" in turn, as opposed to "three volts". Throughout the winter, 998 1 day is cold. After this time, the weather will get warmer and the earth will spring.
There is a folk song "Count Nine", which means how the climate changes:
1929 Don't make a move.
3949 ice walk
59 and 69
Look at the willows by the river.
The 79 River is frozen.
Eighty-nine Yanzilai
99 plus 19
Cattle are being farmed everywhere.