Twenty-four solar terms are formulated according to the change of the earth's position on the ecliptic (that is, the earth's orbit around the sun), and each solar term corresponds to a certain position that the earth reaches every time it runs 15 on the ecliptic. The twenty-four solar terms are an important part of the lunar calendar and a unique creation of our ancestors in the calendar. In foreign calendars, there are only four vernal equinoxes, the summer solstice, the autumn solstice and the winter solstice, which are the beginning of spring, summer, autumn and winter respectively.
In our calendar, the four seasons begin with "four seasons", that is, spring begins with beginning of spring, summer begins with long summer, autumn begins with beginning of autumn, and winter begins with beginning of winter. See the solar terms table for details. The solar terms on the left in the table are referred to as "festival" and the gas on the right is referred to as "qi", which together are called "solar terms".
Beginning of spring, Spring Equinox, Long Summer, Summer Solstice, beginning of autumn, Autumn Equinox, beginning of winter and Winter Solstice. Among them, beginning of spring, Changsha, beginning of autumn and beginning of winter are called "Li Si", which means the beginning of the four seasons.
Introduction of 24 solar terms
1, beginning of spring: Standing is the beginning, and beginning of spring is beginning of spring. Gregorian calendar February 3-5.
2. Rain: It began to rain and gradually increased. Gregorian calendar February 18-20.
3. Sting: Sting means hiding. Sting refers to the sudden movement of spring thunder, which awakens animals dormant in the soil and hibernating. Gregorian calendar 05-07 March.
4. vernal equinox: vernal equinox means equal share. The vernal equinox means that day and night are equally divided. March 20-22 of Gregorian calendar.
5. Qingming: It's sunny and lush. Gregorian calendar 04-06 April.
6. Grain Rain: Rain makes a hundred valleys. With sufficient and timely rainfall, cereal crops can thrive. Gregorian calendar April 19-2 1.
7. Long summer: the beginning of summer. Gregorian calendar 05-07.
8. Xiaoman: Summer crops such as wheat are full of seeds. Gregorian calendar may 20-27.
9. awns: crops with awns, such as wheat, are mature. Gregorian calendar 05-07 June.
10, summer solstice: hot summer is coming. Gregorian calendar June 2 1-22.
1 1, light summer heat: summer heat is hot; Slight summer heat refers to when the climate begins to get hot. Gregorian calendar 06-08 July.
12, Great Summer: the hottest time of the year. July 22-24 of Gregorian calendar.
13, beginning of autumn: beginning of autumn. Gregorian calendar 07-09 August.
14, Chu Xia: Chu means to stop and hide. Summer is the end of hot summer. August 22-24 of Gregorian calendar.
15, Bailu: The weather turns cold and the dew turns white. Gregorian calendar 07-09 September.
16, autumnal equinox: divided equally between day and night. Gregorian calendar September 22-24.
17, cold dew: dew is cold and will freeze. Gregorian calendar 18-09 10 month.
18, first frost: the weather is getting colder and frosty. Gregorian calendar 65438+1October 23-24.
19, beginning of winter: beginning of winter. Gregorian calendar165438+1October 7-8.
20. Xiaoxue: This means it's starting to snow. Gregorian calendar165438+1October 22-23.
2 1, heavy snow: the snowfall is increasing, and there may be snow on the ground. Gregorian calendar 65438+February 6-8.
22. Solstice of Winter: The cold winter is coming. Gregorian calendar 65438+February 2 1-23.
23, slight cold: the climate began to get cold. Gregorian calendar 65438+1October 5-7.
24. Great Cold: The coldest time of the year. Gregorian calendar 65438+1October 20th -2 1.
The above contents refer to Baidu Encyclopedia-Twenty-four solar terms.