How is the Beginning of Autumn calculated and what impact does it have on agricultural activities?

How is the Beginning of Autumn calculated and what impact does it have on agricultural activities?
The Beginning of Autumn solar term is not fixed every year, and there is a certain algorithm behind it. So, how is the Beginning of Autumn calculated and what impact does it have on agricultural activities? In traditional folk customs, the seventh month of the lunar calendar is known as the Ghost Month, so there are many taboos in this month. Click on Shuimo.com to learn more about the taboos in the seventh month of the lunar calendar!

How is the Beginning of Autumn calculated?

[Y*D+C]-L
Formula interpretation: Y=last two digits of the year, D=0.2422, L=number of leap years, C=7.5 in the 21st century and 8.35 in the 20th century.
For example: The date of the beginning of autumn in 2088 = [88×0.2422+7.5]-[88/4]=28-22=6, so August 6 is the beginning of autumn.
Exception: For 2002, add 1 day to the result.

What impact does the Beginning of Autumn have on agricultural activities?

The Beginning of Autumn is particularly important to farmers. There is an agricultural proverb that says: "Thunder in autumn means half of the winter harvest" and "If there is a sunny day at the beginning of autumn, the farmer doesn't have to work hard." This refers to the Beginning of Autumn.
If you hear thunder, the crops will fail in the winter; if the weather is clear on the day of the Beginning of Autumn, there will be good weather and good harvests, and there will be no worries about drought or floods in farming, so you can wait for a good harvest.
In addition, there are sayings such as "Everything is harvested in July, but everything is lost in June" and "North wind before autumn means rain after autumn, and north wind after autumn means drying up the riverbed."
That is to say, if the Beginning of Autumn falls in the seventh month of the lunar calendar, there is hope for a good harvest of grains. If the Beginning of Autumn falls in the sixth month of the lunar calendar, the grains will not be ripe and the harvest will be poor. If a north wind blows before the Beginning of Autumn, it will rain after it. If a north wind blows after the Beginning of Autumn, there may be a drought in the winter of that year.

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