What's the difference between beginning of autumn, early summer, white dew, autumnal equinox, cold dew and early frost?

Beginning of autumn: The time is between August 7th and 9th of the Gregorian calendar every year.

Summer: The time is between August 22nd and 24th of the Gregorian calendar every year.

Millennium: the time is between September 7 and 9 of the Gregorian calendar every year.

Autumnal Equinox: The time is between September 23rd and 24th of the Gregorian calendar every year.

Cold dew: the time point is between the 8th and 9th of every calendar year 10 year 10.

The first frost: the time point is between the 23rd and 24th of the Gregorian calendar 10 year 10.

2. The meaning is different.

Beginning of autumn: It means that autumn begins and summer goes cold.

Summer: It means that the hot summer vacation is coming to an end.

Millennium: It means the weather is getting cold.

Equinox: It means that in the middle of autumn, the length of day and night is equal.

Cold dew: refers to the temperature is lower than the dew, and the dew on the ground is colder and will soon condense into frost.

First frost: it means that the weather is getting colder and it begins to frost.

The position of the sun is different.

Beginning of autumn: longitude of the sun 135.

Summer heat: the sun reaches longitude 150.

Millennium: the longitude of the sun 165.

Autumnal equinox: the longitude of the sun 180.

Cold dew: the longitude of the sun 195.

First frost: The sun is at 2 10.

4. Three differences.

Beginning of autumn third class: a cool breeze came; Second, wait for the white deer to be born; Three are waiting for cicadas to sing.

Three times in summer: once the eagle is a sacrificial bird; Second, wait for the beginning of heaven and earth; Three Hou he naideng.

The Millennium is three times: once the beauty comes; Second, wait for the mysterious bird to return; A flock of birds breeds shame.

There are three waiting periods in the autumnal equinox: as soon as you hear thunder, the sound will stop; Second, wait for scorpion blank households; Wait for the water to dry.

Cold dew third class: first-class Hongyan guest; Second, the sparrow enters the water and becomes a clam; Three chrysanthemums have yellow flowers.

The first frost is the third class: the first class jackal sacrifices the beast; Second, the vegetation is yellow; Three stings are salty.