What day is September 23rd, 2023?

September 23rd, 2023 is the autumnal equinox.

The autumnal equinox in 2023 is on Saturday, September 23, 2023, which is also the ninth day of the eighth lunar month in 2023. It is the sixteenth of the twenty-four solar terms and the fourth in autumn. The sun reaches longitude 180, and the festival is held on September 22-24 of the Gregorian calendar every year. The autumnal equinox symbolizes the autumn harvest, most crops mature in autumn, and the autumnal equinox also symbolizes the joy of autumn harvest.

The autumnal equinox means that in the middle of autumn, the length of day and night is equal. The autumnal equinox is equally divided day and night, and the sun is on the horizon all day. After the autumnal equinox, the direct sunlight moves south, the days in the northern hemisphere are short and the nights are long, and the temperature drops, which is of universal significance throughout the country.

According to the lunar calendar, "beginning of autumn" is the beginning of autumn, "the first frost" is the end of autumn, and the "autumnal equinox" is just half of the 90 days from beginning of autumn to the first frost, so the arrival of the autumnal equinox season symbolizes that autumn has passed by half.

Characteristics of solar terms in autumnal equinox

The climate changed from hot to cool.

The autumnal equinox is characterized by the climate changing from hot to cool. The autumnal equinox is a solar term for the transition from early autumn to late autumn. By this solar term, most parts of the country have begun to enter the cool autumn. When the cold air from the south meets the warm and humid air that gradually decays, the rainfall will take away the heat on the ground and lower the surface temperature. Therefore, the weather will gradually get cold after the autumnal equinox, and the temperature difference at night will gradually widen.

Step 2 split equally

The autumnal equinox is characterized by "equal share". According to the ancient book Spring and Autumn Stories, the autumnal equinox is a dichotomy of yin and yang, which means that day and night have been divided equally, and it also indicates the end of autumn. The autumnal equinox is exactly half of the 90 days from beginning of autumn to the first frost, which means that the autumn is already half over.