What is the exact time of the Great Heat in 2019? How do we calculate the start and end of the dog days?

What is the exact time of the Great Heat in 2019? How do we calculate the start and end of the dog days?
Introduction: Great Heat is one of the 24 solar terms, but the specific time of Great Heat is not consistent. So what is the specific time of Great Heat in 2019? How to calculate the start and end of the dog days? The Lesser Heat and Greater Heat solar terms also mostly occur in June, so people call June the "Summer Month". If you want to know more about the auspicious and inauspicious days in the sixth lunar month of 2019, please visit the special topic on the sixth lunar month of 2019 on Shuimoxiansheng.com.

What is the exact time of the Great Heat in 2019?

July 23, 2019 10:49:50 Tuesday (June 21st of the Year of the Pig, 36 days away from the Great Heat of 2019) The Great Heat is one of the 24 solar terms in the lunar calendar, and the sun is at 120° of the ecliptic longitude. During the Great Heat period, Chinese people have the customs of drinking Fu tea, drying Fu ginger, burning Fu incense, and drinking mutton soup. The "Collection of Explanations of the 72 Seasonal Changes in the Lunar Calendar" says: "The Great Heat is in the middle of June. Heat means heat, and there are two types of heat: small at the beginning of the month and large in the middle. The heat is still large now."
Its climate characteristics are: "When the Big Dipper points to Bing, it is the Great Heat. The weather at this time is much hotter than the Lesser Heat, so it is named the Great Heat." The Great Heat solar term is around the middle of the "Three Hot Days", which is the hottest period of the year, with the highest temperature and the fastest growth of crops. At the same time, various meteorological disasters such as drought, flood, and wind disasters are also most frequent in many areas.

How to calculate the start and end of the dog days of summer?

The start of the dog days of summer:
The dog days occur between Lesser Heat and Beginning of Autumn, and are the hottest, most humid, and most sultry days of the year. The so-called "fu days" refers to the "three hot days" in the lunar calendar, which is the hottest period of the year.
It can be understood in this way: "Fu" means that the weather is too hot, so it is better to stay still and not move. However, the reason why the dog days are called "fu" is because there are many cold factors involved.
The three hottest days of the year are the thirty to forty days in the Central Plains. The three hottest days are calculated according to the lunar calendar, and are approximately between mid-to-late July and early August of the Gregorian calendar. The end of the dog days:
The time of the beginning of the dog days is not fixed every year, and the length of the middle dog days is also different. It is necessary to check the calendar to calculate. The date of the beginning of the dog days can be simply expressed by the four-character formula "Summer Solstice San Geng", that is, starting from the third "Geng" day after the summer solstice. The first dog days is 10 days, the middle dog days is 10 days or 20 days, and the last dog days is 10 days.
The "ganzhi calendar" was popular in ancient my country. The days were recorded in a cycle using 60 different names formed by matching 10 heavenly stems with 12 earthly branches.
Any day containing the character Geng is called Geng Day. The "Geng" in Geng day is the 7th of the 10 heavenly stems "Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui", and Geng day repeats every 10 days.
Starting from the summer solstice, according to the arrangement of the Ganzhi calendar, the third Geng day is the first dog days, the fourth Geng day is the second dog days, and the first Geng day after the beginning of autumn is the last dog days. When there are 4 Geng days between the summer solstice and the beginning of autumn, the middle dog days lasts 10 days, and when there are 5 Geng days, it lasts 20 days.
It seems that the early or late appearance of Gengri will affect the length of the dog days, so in some years the dog days last for 30 days, while in other years they last for 40 days.


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