Autumnal Equinox


The autumnal equinox, the 16th solar term in the 24 solar terms of the lunar calendar, is usually on September 22 or 23 of each year. The climate in the south begins to fall from this solar term. On this day, the sun reaches 180 degrees of longitude and shines directly at the Earth's equator. Therefore, 24 hours of the day and night are equally divided into 12 hours each; There is no polar day or night in the world. After the autumnal equinox, the range of polar nights near the North Pole and the range of polar days near the South Pole become larger and larger.

Climatic characteristics

According to the standard of climatology, the average daily temperature in the Yangtze River basin and the vast areas to the north of China has dropped below 22 ℃ during the autumnal equinox, which is autumn. At this time, the cold air mass from the north has a certain strength. The rainy season has ended in most parts of the country, and words such as cool wind, blue sky and sunny weather all describe the scene at this time.

The autumnal equinox solar term is also an important solar term for agricultural production. After the autumnal equinox, the position of direct sunlight moves to the southern hemisphere, and the northern hemisphere gets less and less solar radiation, while the ground loses more heat, and the temperature decreases significantly faster.

Health Maintenance

Around autumn, not only does the moon cake market begin to flourish, but crabs in this season are also the best time to eat. First of all, crabs should be steamed and cooked thoroughly. When eating crabs, it is best to remove their gills, stomach, heart, intestines and other organs.

For hypertension, hyperlipidemia and hyperglycemia, eat less meat and egg yolk stuffing, and eat more bitter fruits and vegetables to prevent dryness, such as sesame, walnut and glutinous rice.

Exercise more, pay attention to rest, and develop the good habit of going to bed early and getting up early. The deeper the night, the heavier the cold, and it is easy for the cold to invade the body, laying a hidden danger for the pain in the lower back and legs, and also causing diseases such as cough.