What changes have taken place this year?

They are: spring (March, April and May), summer (June, July and August), autumn (September, 1 0,65438+February) and winter (12,1February).

Generally speaking, people think that 1 month is the coldest month in a year, so spring is March, April and May. Summer is June, July and August; Autumn is 9, 10, 1 1 month; Winter is 12, 1, February. Divide the four seasons like this.

The four-season classification mentioned above is generally used in the northern hemisphere, especially in temperate regions with distinct seasons.

Extended data:

Other divisions of the four seasons in ancient China;

In ancient China, the four seasons were divided by twenty-four solar terms. Up to now, every six solar terms is a season, as follows.

Spring (February 3~5 to April 19~2 1): beginning of spring, rain, fright, vernal equinox, Qingming, Grain Rain;

Summer (May 5~7 to July 22~24): Long summer, Xiaoman, Mangzhong, Summer Solstice, Little Summer and Big Summer;

Autumn (August 7-9 to 65438+1October 23-24): beginning of autumn, summer, white dew, autumnal equinox, cold dew and first frost;

Winter (165438+1October 7-8 to 65438+1October 20-21): beginning of winter, light snow, heavy snow, winter solstice, slight cold, severe cold.

References:

Baidu Encyclopedia-Four Seasons (Astronomical Phenomenon)