What are the signs of cloudy days at the autumnal equinox?

A cloudy day at the autumnal equinox represents a bumper harvest in the coming year.

The autumnal equinox should not be sunny, but light rain is better. Autumn equinox solar terms, rain is not as good as sunny days. If the autumnal equinox solar terms rain, it indicates a good year. In addition, there is a saying that "the autumn equinox is half sunny and half cloudy, and the price of rice in the coming year is irrelevant (rice is not expensive)". This agricultural proverb means that if it rains in the autumn equinox, the grain will be bumper in the coming year, and the price of natural rice will not be expensive.

The autumnal equinox has a great influence on farming, and the ancients often predicted the harvest through the autumnal equinox. As far as agricultural production is concerned, there are two busiest times for farm work: one is "busy in three summers", starting from the solar term of "ear planting"; The other is "Sanqiu is very busy", starting with the solar term "Autumn Equinox". Therefore, the folk agricultural proverb says, "The white dew is early, the cold dew is late, and the autumn equinox is the time to plant wheat."

When divining, the simplest thing is to look at the moon and the moon. If the autumnal equinox is cloudy with light rain, it indicates a bumper harvest, but if it is cloudy with light rain at night, it will be in trouble. "The autumnal equinox will die together sooner or later." On the day of the autumnal equinox, when the southeast wind blows, the people will be safe at the beginning of the year, and when the northeast wind or northwest wind blows, the crops will be "more uncomfortable".

Meteorological changes of autumnal equinox

According to the lunar calendar, "beginning of autumn" is the beginning of autumn and ends with "the first frost". The "vernal equinox" is exactly half of the 90 days from beginning of autumn to the first frost. Since the autumnal equinox, the climate has three main characteristics: the direct sunlight continues to move from the equator to the southern hemisphere, and the phenomenon of short days and long nights in the northern hemisphere will become more and more obvious until the winter solstice reaches the longest night and the shortest day; The temperature difference between day and night gradually increases. The situation in the southern hemisphere is just the opposite.

After the autumnal equinox, the direct sunlight moves south, the days in the northern hemisphere become shorter, the nights become longer, and the temperature drops, which is of universal significance throughout the country. At the autumnal equinox, China's Yangtze River basin and its vast areas to the north successively entered the autumn divided by "climatic average temperature", and the daily average temperature dropped below 22℃. The cold air mass in the north began to have some influence. The rainy season has just ended in most areas, with a cool breeze blowing gently. Autumn is crisp and the sky is high and the clouds are light.

After the autumnal equinox, the direct sunlight moved to the southern hemisphere, and the northern hemisphere got less and less solar radiation, but the ground lost more heat and the temperature dropped significantly. An agricultural proverb says: "An autumn rain leads to a cold", "Autumn dew divides the night, and the night is cool" (the above contents are for reference only).

The above contents refer to Baidu Encyclopedia-Autumn Equinox.