What is the role of the dog days? Has the Lesser Heat of 2020 entered its infancy?

What is the role of the dog days? Has the Lesser Heat of 2020 entered its infancy?
Introduction: As time goes by, the summer of 2020 is getting closer and closer, and the heat during the dog days of summer is often unbearable. So what is the role of the dog days? Has the Lesser Heat of 2020 entered its infancy? Let’s follow the editor of Shuimoxiansheng.com to learn more about it!

What is the function of the dog days?

There are three hot days in a row, each of which lasts for ten days, and this is calculated according to the ten number of the heavenly stems.
Therefore, the three dog days are divided into: the third Geng day after the summer solstice is the beginning day of the first dog day.

For example, the summer solstice in 2006 was on June 21st of the Western calendar. The heavenly stem day of that day was Xin Day. 28 days later, it was the third Geng Day. Therefore, July 20th of 2006 was the beginning of the first volt.
Ten days later, there is another Geng day, which is July 30, and it enters the second dog days; ten days later, there is another Geng day, and it is the first Geng day after the beginning of autumn, which is August 9, and it enters the third dog days;
If it is 2007, July 15th is the third Geng day, which is the beginning of the first Fu (first Fu); ten days later, there is another Geng day, which is July 25th, and it enters the second Fu (middle Fu);
Ten days later, it is another Geng day, but it is not yet the beginning of autumn. Ten days later (the middle of the dog days this year has 20 days), it is another Geng day, and it is the first Geng day after the beginning of autumn, which is August 14, and we have entered the third dog days.
This means that it is very hot after the beginning of the dog days every year, especially the ten days (sometimes twenty days) in the middle of the dog days, which are the hottest. There is a saying among the people that "the coldest days are in the 39th day of winter, and the hottest days are in the 5th day of summer".
New algorithm in the 21st century - Gengri formula: GR = (D - [Y/4]) MOD 10 (GR Gengri, D even year 1 odd year 6, Y year, [ ] round up, MOD remainder)
The GR of the first dog days is plus 10 (except in 2084), the GR of the middle dog days is plus 20, and when the GR of the last dog days is greater than 7, subtract 1 and when it is less than 8, add 9 (except in 2096, subtract 1). For example, in 2006, GR = (1 - [6/4]) MOD 10 = 0 (10), the first dog days is July 20, the middle dog days is the 30th, and the last dog days is August 9.

Is the Lesser Heat of 2020 the beginning of the dog days?

The beginning of the Lesser Heat in 2020 is July 6, and the beginning of the Dog Days in 2020 is July 16.
Therefore, the Lesser Heat of 2020 has not yet entered the dog days!

Rufu means entering the dog days of summer. "The first dog days are counted from the third Geng day after the summer solstice." This is the basis for establishing the first dog days.
The calendar stipulates: "The dog days begin on the third Geng day after the summer solstice." This means that starting from the summer solstice, the dog days begin on the third Geng day.
The "Geng day" here refers to the day with the prefix "Geng" in the ancient "Ganzhi calendar".

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