What is the solar term on September 23rd, 2023?

September 23rd, 2023 is the autumnal equinox.

The autumnal equinox used to be the traditional "Festival of Sacrificing the Moon". For example, in ancient times, there was a saying that "the sun is sacrificed in spring and the moon is sacrificed in autumn". Now Mid-Autumn Festival comes from the traditional Mid-Autumn Festival. According to textual research, the original "Moon Festival" was set on the day of "Autumn Equinox", but there is not always a full moon because of the different days of August in the lunar calendar every year. And the moon without the moon is a big spoil the fun. Therefore, the Mid-Autumn Festival was later transferred from the Equinox to the Mid-Autumn Festival.

The autumn of 2023 is divided into Gregorian calendar September 23rd, 2023 14: 39, and lunar calendar August 9th. The autumnal equinox is the sixteenth solar term among the twenty-four solar terms and the fourth solar term in autumn. At this time, the sun reaches 180 degrees. The festival is held from September 22 to 24 of the Gregorian calendar every year.

Characteristics of autumnal equinox

1, temperature change: With the arrival of the autumnal equinox, the temperature gradually began to drop. At this time, people began to feel the cool evening breeze and morning dew. In some years, the phenomenon of "autumn tiger" may appear at the autumnal equinox, that is, the weather is hot for a short time, but this is only a short-lived phenomenon, and the temperature will gradually decrease as time goes on.

2. Length of day and night: During the autumnal equinox, the time of day and night becomes more balanced. The length of day and night is almost equal, each 12 hours. At this time, the sun shines directly on the equator, and the sunshine time on the earth begins to decrease gradually.

3. Precipitation characteristics: The precipitation in autumn equinox usually shows a decreasing trend. But this season is still a relatively concentrated period of precipitation, especially in the north and south temperate regions. As the cold air moves south, there may be rainy weather.