What are the solar terms in September?

The solar terms in September include the Millennium and the autumnal equinox.

Millennium refers to the bucket, the sun's yellow meridian 165 degrees. The weather became cold, with dew and white. Gregorian calendar 07-09 September. White dew, Mid-Autumn Festival, the weather turns cold, the dew turns white at night, and sorghum and early corn begin to harvest. Equinox refers to the bucket, solar calendar 180 degrees. Divide day and night equally. Gregorian calendar September 22-24. The autumnal equinox is half that of autumn. After that, the northern hemisphere became shorter and the nights became longer.