Is beginning of autumn the autumnal equinox?

Beginning of autumn is not an autumnal equinox, and beginning of autumn and autumnal equinox are two different solar terms, which are different in time, significance, climate and climate, as follows:

1, different times

Beginning of autumn: The solar terms in beginning of autumn coincide with each other on August 7th or 8th of the Gregorian calendar. During the beginning of autumn solar term, the sun will move to the position of longitude 135. Beginning of autumn solar terms mark the official establishment of autumn. Speaking of solar terms in beginning of autumn, it can be called autumn.

Autumnal equinox: The autumnal equinox is a solar term, which is celebrated on September 22-24 of the Gregorian calendar every year. The solar terms of the autumnal equinox and the vernal equinox are opposite, and both are solar terms that divide the seasons equally. The position of the sun is 0 at the vernal equinox and180 at the autumnal equinox. The sun will shine directly at the equator in these two days, and the length of day and night is equal in most parts of the world.

The position of the sun is different.

At beginning of autumn, the sun reached longitude 135. At the autumnal equinox, the sun reaches 180 degrees.

3. Different meanings

Beginning of autumn, summer is cool, which means the beginning of autumn. The autumnal equinox means equal time between day and night, and the climate changes from hot to cold.