What is the saying about the Beginning of Autumn? Which day of the three hottest days is the Beginning of Autumn in 2020?

What is the saying about the Beginning of Autumn? Which day of the three hottest days is the Beginning of Autumn in 2020?
Introduction: The Beginning of Autumn is one of the important solar terms. So what is the saying about the Beginning of Autumn? Which day of the three hottest days is the Beginning of Autumn in 2020? The dog days of summer occur in the sixth month of the lunar calendar. During this month, there are many Chinese folk festivals, such as the Tianfu Festival and the Lotus Viewing Festival. There is more knowledge about the sixth lunar month of 2020 in the special topic on Shui Mo Xiansheng’s website!

What is the saying about the Beginning of Autumn?

《1》 Beginning of Autumn is the 13th solar term among the 24 solar terms. The handle of the Big Dipper points to the southwest, and the sun reaches 135° of the ecliptic longitude. It falls on August 7-9 of the Gregorian calendar every year. Beginning of Autumn is the first solar term in autumn and the starting point of autumn. Autumn starts from the Beginning of Autumn and ends at the Beginning of Winter. Its beginning and end are the result of the movement of celestial bodies.
《2》 The beginning of autumn does not mean the end of the hot weather . The weather is still very hot during early autumn. It is said that "the heat is in the three dog days", and there is also a saying that "there is one dog day after autumn". There is at least one dog day of extremely hot weather after the beginning of autumn.
《3》 The Beginning of Autumn was one of the “Four Seasons and Eight Festivals” in ancient times . People had the custom of offering sacrifices to the god of the land and celebrating the harvest.
《4》 The beginning of autumn means that rainfall, storms, humidity, etc. are at a turning point in the year and tend to decline or decrease. With the change of seasons, there are obvious changes in rainfall, storms, dryness and humidity in the southern region; in the northern region, these changes are not obvious, and the temperature changes obviously.

Which day of the three hottest days is the Beginning of Autumn in 2020?

2020 Dog Days Schedule:
The first dog days of summer: July 16, 2020 (the 26th day of the fifth lunar month) to July 25, 2020 (the fifth day of the sixth lunar month), a total of 10 days.
The middle of the dog days of summer: July 26, 2020 (the sixth day of the sixth lunar month) to August 14, 2020 (the twenty-fifth day of the sixth lunar month), a total of 20 days.
The last dog days: August 15, 2020 (the 26th day of the sixth lunar month) to August 24, 2020 (the 6th day of the seventh lunar month), a total of 10 days.
The beginning of autumn in 2020 is June 18th in the lunar calendar and August 7th in the Gregorian calendar.
Therefore, it can be seen that the beginning of autumn in 2020 is in the middle of the three hottest days!

——Extended content: Season division

Astronomical method <br /> Division based on celestial phenomena: China's traditional method of dividing the four seasons is based on celestial phenomena, with the "four beginnings" of the twenty-four solar terms as the starting points of the four seasons.
Autumn begins at the Beginning of Autumn (when the Big Dipper points to the southwest and the sun's ecliptic longitude is 135°) and ends at the Beginning of Winter. Its beginning and end are the result of the movement of celestial bodies and have nothing to do with human beings.
The almanac says: "When the Big Dipper points to the southwest, it's the beginning of autumn. The yin comes out of the earth and starts to kill all things. According to the autumn instructions, the crops are ripe." After the beginning of autumn, rainfall, storms, humidity, etc. are at a turning point in the year. In nature, the yin and yang energies begin to change, and all things begin to move from lush growth to withered and mature.
The change of seasons reflects the changing patterns of climate, phenology and other aspects.
Temperature method <br /> Division based on temperature changes: The four seasons are now often divided based on temperature changes, using the "parity mean temperature" method proposed by modern scholar Zhang Baokun. According to the parity mean temperature method, autumn begins when the daily average temperature is between 10℃ and 22℃ for five consecutive days.
Modern scholar Zhang Baokun proposed a new seasonal standard based on phenological phenomena and agricultural production. Winter begins when the phenological mean temperature (the average temperature for five consecutive days) steadily drops below 10°C, and summer begins when it steadily rises above 22°C.
Based on this, spring begins when the average temperature rises steadily from below 10℃ to above 10℃, and autumn begins when the average temperature drops steadily from above 22℃ to below 22℃. This is a modern method of dividing the four seasons based on temperature changes.

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