What solar terms are there before and after the autumnal equinox?

Before the autumnal equinox is the white dew: on September 7th or 8th every year, due to the obvious southward shift of direct sunlight, the temperature drops rapidly and the weather is cool. Water vapor close to the ground at night forms white dew on vegetation, hence the name "white dew".

Autumnal equinox: On the 23rd or 24th of September every year, the direct sunlight point returns to the equator, forming equal length of day and night.

There is cold dew after the autumnal equinox: 65438+ October 89 every year. At this time, the direct point of the sun began to move south, the temperature in the northern hemisphere continued to drop, the weather was colder, and the dew was cold, hence the name "cold dew wind".