What months are the four quarters?

The first quarter: 65438+ 10, February and March. The second quarter: April, May and June. The third quarter: July, August and September. The fourth quarter: 65438+ 10 month, 165438+ 10 month, 65438+February.

Refers to the four alternate seasons in a year, namely, spring, summer, autumn and winter. Astronomically speaking, the division of the four seasons is determined by the orbital position of the earth around the sun.

When the earth is in different positions in the orbit of revolution at different times of the year, different places on the earth receive different sunlight and different heat from the sun, which leads to seasonal changes and differences between cold and hot. The four seasons on the earth are not only periodic changes in temperature, but also periodic changes in the length of day and night and the height of the sun. It affects or determines the movement rhythm of many things in the earth's environment, especially the adaptation of creatures.

The earth's orbit around the sun is elliptical and has an angle with the plane of its rotation. When the earth is in different positions in its orbit at different times of the year, different places on the earth receive different sunlight and different heat from the sun, so there are seasonal changes and differences between cold and hot.