Why are there four seasons abroad?

The general criteria for dividing seasons are:

Early winter-65438+1mid-late October-165438+1late October or 65438+early February.

Midwinter-165438+1end of October or 65438+early February-mid-March

Late winter (early spring)-mid-March-mid-April

Spring (late spring)-middle and late April-middle and early June

Early summer-mid-June-mid-July

Midsummer-mid-July-late August and September

Early autumn-late August, early September-65438+1mid-late October

North temperate countries usually divide four seasons according to the Gregorian calendar month, spring-March, April and May; Summer: June, July and August; Autumn-September, 10,11; Winter: 12, 1, February.

There are three seasons in a year in India, with the rainy season from June to 10, the cool season or dry season from June to February, and the hot season from March to May.

In climatology, seasons are divided according to the average temperature. Half a day is a wait. The standard of dividing the four seasons by the average temperature is: 10℃ ~ 22℃ is spring; More than 22℃ in summer; 22℃ ~ 10℃ is autumn; It is lower than 10℃ in winter. Only in this way can there be a saying that there is no winter in summer.

The twelve constellations in western countries (the position of the sun on the ecliptic) are similar to the twenty-four solar terms in China, but the twelve constellations are time periods and our twenty-four solar terms are moments. As for the solstice in winter and the solstice in summer, there are still some (as if ordinary people don't need them). Because it is an important astronomical concept, as long as astronomy has a certain level, it will be discovered. For the sake of global unity, it is called solstice and solstice in astronomy. The vernal equinox and autumnal equinox are called rising and falling points.