What is the basic meaning of the autumnal equinox

The basic meaning of the autumnal equinox is as follows:

1, the time of day and night is equal: the autumnal equinox is one of the 24 solar terms, and its time of day and night is equal on the autumnal equinox, that is, each is 12 hour, which is one of the basic meanings of the autumnal equinox. On the day of the autumnal equinox, the sun shines directly on the equator, and the time between day and night on the earth is equal. This happens only twice a year, at the vernal equinox and the autumnal equinox.

2. Seasonal change: The autumnal equinox is also one of the signs of seasonal change. After the autumnal equinox, the daytime time in the northern hemisphere gradually decreases, the nighttime time gradually increases, and the temperature gradually decreases. This seasonal change means that autumn is half over and winter is about to enter.

3. Cultural significance: The autumnal equinox is also of great significance in China culture. It is one of the traditional solar terms in China with rich historical and cultural connotations. People will hold various celebrations on this day, such as offering sacrifices to ancestors and eating autumn vegetables, in order to pray for health, longevity and harvest. In addition, the autumnal equinox is also a good time to appreciate the red leaves and climb high. Many literati often create poems, paintings and other works at this time to express their love and praise for nature.

Twenty-four solar term song:

The spring rain shakes the spring and clears the valley, and the summer is full of mountains and summers. Autumn dew, autumn frost, little snow in winter and cold in winter. The two festivals remain unchanged every month, with a maximum difference of one or two days. The first half of the year is June 2 1 day, and the second half is August 23.

This poem begins in spring and has four seasons: summer, autumn and winter. Each season contains six solar terms, with a total of 24 solar terms. The name of each solar term reflects their characteristics and laws. For example, the spring rain in spring refers to the phenomenon of spring rain and spring thunder, the summer in summer refers to the summer heat and summer harvest, the autumn dew refers to the autumn cool and autumn harvest, and the winter snow in winter refers to the winter storage.

The solar terms of each season have two specific dates, starting from the first day of each month, and there are two solar terms in each month. These dates are calculated according to the lunar calendar, usually between the fifth and sixth solar terms of the lunar calendar.

The date of each solar term differs by at most one or two days, depending on the year and month of the lunar calendar. The solar terms in the first half of the year start from the first day of the first lunar month, and there are two solar terms every month. The solar terms in the second half of the year begin in August of the lunar calendar and also begin on the first day of each month. There are two solar terms every month.