How to divide the four seasons into 12 months in a year

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There are 12 months in a year, and the four seasons to which each month belongs is slightly different.There are five specific division methods, respectively.It refers to the astronomical division method, the meteorological division method, the solar term division method, the lunar calendar division method, and the climatic temperature division method.

1.Astronomical division method:From the perspective of astronomical phenomena, the seasonal changes are the seasonal changes in the length of day and night and the height of the sun.

For this reason, the astronomical division of the four seasons is based on the Spring Equinox (March 21), Summer Solstice (June 22), Autumn Equinox (September 23), and Winter Solstice (December 22) as the four seasons Start.That is, spring from the vernal equinox to the summer solstice, summer from the summer solstice to autumn, autumn from the autumn equinox to the winter solstice, and winter from the winter solstice to spring.

2.Meteorological division method:In the meteorological department, spring is usually from March to May, summer is from June to August, autumn is from September to November, and winter is from December to February of the following year.And often take January, April, July, October as the representative months of winter, spring, summer and autumn.

3.The solar term division method:Start with the beginning of spring (February 4th or 5th) as the beginning of spring, the beginning of summer (May 5th or 6th) as the beginning of summer, and the beginning of autumn (August 7th or 8th) Day) as the start of autumn, and the beginning of winter (November 8th or 9th) as the start of winter.

4.The division method of the lunar calendar:It is customary in our country to use the lunar month to divide the four seasons.

A year from January to March in the lunar calendar is spring, April to June is summer, July to September is autumn, and October to December is winter.

5.Waiting temperature division method:This division method is waiting (five days as a waiting period).The average temperature is used as the temperature index to divide the four seasons.

Summer starts when the climatic average temperature is stable above 22℃, winter starts when the climatic average temperature stabilizes below 10℃, and spring and autumn when the climatic average temperature is between 10 and 22℃.From 10℃ to 22℃ is spring, and from 22℃ to 10℃ is autumn.The division of four seasons, not only the climate of different regions on the earth is very different, that is, the same region has different climates in different seasons.

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