When are the twenty-four solar terms?

spring

1. The sun in beginning of spring is located at longitude 3 15 degrees of the Yellow River, and it intersects from February 3 to 5. 2. Yuyang is located at 330 degrees longitude of the Yellow River and intersects with February 18-20.

3. The stung sun is located at 345 degrees longitude of the Yellow River, and the node is on March 5-7. 4. The vernal equinox sun is located at 0 degrees longitude of the Yellow River, and the node is on March 20-22.

5. The Qingming Sun is located at longitude 15 degrees, the node is on April 6, the Grain Rain Sun is located at longitude 30 degrees, and the node is on April 19-2 1 day.

summer

1. The sun in the long summer is located at 45 degrees of the yellow meridian, and there is a node on May 7, and the sun in the small full summer is located at 60 degrees of the yellow meridian, and there is a node on May 20-22.

3. The awn seed sun is located at 75 degrees longitude of the Yellow River, and the intersection point is from June 5 to 7; The summer solstice sun is located at 90 degrees longitude of the Yellow River, and the intersection point is from June 2 1 day to June 22.

5. In summer, the sun is located at longitude 105 degrees of the Yellow River, and the intersection point is from July 6 to 8. 6. In summer, the sun is located at longitude 120 degrees of the Yellow River, and the intersection point is from July 22nd to 24th.

autumn

1. The sun in beginning of autumn is located at 135 degrees, and the solar term is from August 7 to 9. 2. In summer, the sun is located at 150 degrees, and the intersection point is on August 22-24.

3. The millennium sun is located at longitude 165 degrees, and the node is from September 7 to 9, and the autumnal equinox sun is located at longitude 180 degrees, and the node is from September 22 to 24.

5. The cold dew sun is located at the node of longitude 195, 65438+1October 8 -9, 6. 1On October 23rd and 24th, the first first frost sun was located at longitude 2 10 and 65438+.

winter

1. The sun in beginning of winter is located at the longitude of 225 degrees, at the intersection of165438+1October 7th to 8th and 2nd. Xiaoxue Sun is located at the longitude of 240 degrees, at the intersection of165438+1October 22-23.

3. The snowy sun is located at the longitude of 255 degrees of the Yellow River, and the node is 65438+February 6 -8. 4. The winter solstice sun is located at 270 degrees longitude of the Yellow River, and the intersection point is 65438+February 2 1-23.

5. The slight cold sun is located at the longitude of 285 degrees of the Yellow River, at the node of 65438+1October 5th to 7th and 6th. The severe cold day is located at 300 degrees of the yellow meridian, at the node of 65438+1October 20th -2 1.

Extended data:

Twenty-four solar terms refer to the special festivals in the dry calendar that indicate the season, phenology, climate change and the establishment of "December construction". It was originally determined by the bucket handle direction of the Big Dipper, and bucket handle rotates around the east, south, west and north, which is called one of the "years old" (photo); Every rotation cycle begins in the beginning of spring and ends in severe cold. The current "twenty-four solar terms" are divided by "constant gas method", that is, each solar term corresponds to a certain position that the earth reaches every time it runs 15 on the ecliptic; "Constant Qi" method divides the sun's annual trajectory into 24 equal parts, each equal part is 15, and each equal part is divided into a solar term, which starts from beginning of spring and ends with the severe cold. "Twenty-four solar terms" express the unique concept of time between man and the natural universe, and contain the long-standing cultural connotation and historical accumulation of the Chinese nation.

Baidu encyclopedia-24 solar terms