What are the climatic characteristics of the autumnal equinox?

Since the autumnal equinox, the climate has three main characteristics: the phenomenon of short days and long nights will become more and more obvious; The temperature difference between day and night gradually increases; The temperature drops day by day.

The autumnal equinox is the midpoint of autumn, marking the end of summer and the beginning of winter. From this day on, we can clearly feel the phenomenon of short days and long nights. On this day, the direct position of the sun continued to move from the equator to the southern hemisphere, and the days in the northern hemisphere became shorter and the nights became longer. This means that we will see more sunsets, sunrises and longer nights.

With the intensification of short days and long nights, the temperature difference between day and night also increases gradually. Before the autumnal equinox, we may feel the temperature is relatively high because the residual temperature in summer still exists. However, with the arrival of autumn, the temperature began to drop gradually. This change will lead to an increase in the temperature difference in a day, and the temperature in the morning and evening may be obviously different. Therefore, we need to increase or decrease clothes in time according to the weather conditions to keep comfortable.

Finally, the day-to-day temperature drop is also a remarkable feature of the autumnal equinox solar terms. With the deepening of autumn, the sky becomes clear and the sun becomes brighter. This enables us to enjoy more outdoor activities and beautiful scenery. However, we also need to be alert to temperature changes. Although the temperature may still be high during the day, it will gradually decrease at night. Therefore, when we are outdoors, we need to keep warm to avoid catching a cold or other discomfort.

Traditional customs related to the autumnal equinox:

There are many traditional customs related to the autumnal equinox, among which the most widely known is "vertical egg". On the autumnal equinox, there is a folk custom of "laying eggs vertically" in China. Choose a smooth and symmetrical fresh egg that has just been laid for three or four days, gently stand up and put it on the table. Although there are many losers, winners will feel a sense of accomplishment. In addition, the autumnal equinox also has the custom of eating okra and okra. In the autumnal equinox, vegetables such as okra and okra are in the harvest season.

So people will make them into various foods to supplement the nutrients needed by the body. In ancient times, the autumnal equinox was also an important day for farmers to worship the land gods and ancestors. They will hold a sacrificial ceremony at this time to pray for a bumper harvest and good weather in the coming year. In modern society, although this traditional ritual activity has gradually faded, in some rural areas, people still hold some celebrations on the day of the autumn equinox to express their awe and gratitude for nature.

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