24 solar terms and their dates

The sun in beginning of spring is located at 365, 438+05 degrees of the Huangjing, and the solar term is from February 2 to 5.

The rainy day is located at 330 degrees longitude of the Yellow River and will be on February 18-20.

The stung sun is located at 345 degrees of the yellow meridian, and it will pass through on March 5-7.

At the vernal equinox, the sun is located at 0 degrees of the yellow meridian and crosses on March 20-22.

The Qingming sun is located at longitude 15 degrees, and the festival will be held on April 4-6.

The sun in the Grain Rain is located at 30 degrees longitude of the Yellow River and intersects in April 19-2 1.

summer

The sun in the long summer is located at 45 degrees of the yellow meridian, and there will be solar terms from May 5 to 7.

Xiaoman sun is located at 60 degrees of the yellow meridian, and the solar term will be celebrated on May 20-22.

The awn seed sun is located at 75 degrees of the yellow meridian and intersects on June 5-7.

The summer solstice sun is located at 90 degrees of the yellow meridian, which intersects with June 2 1-22.

The light summer sun is located at 105 degrees, July 6-8.

In summer, the sun is located at 120 degrees, and the solar term passes on July 22-24.

autumn

The sun in beginning of autumn is located at longitude 135 degrees, and the solar term will pass on August 7-9.

In summer, the sun is located at 150 degrees, and the solar term passes on August 22-24.

The Millennium sun is located at longitude 165 degrees, and will pass the solar term on September 7-9.

The autumnal equinox sun is located at 180 degrees, and will pass the solar term on September 22-24.

The cold dew sun is located at the node of longitude 195 degrees and 65438+1October 8-9.

The sun in the first frost is located at longitude 2 10, and the node is 65438+1October 23-24.

winter

The sun in early winter is located at 225 degrees of the yellow meridian and intersects with165438+1October 7-8.

Xiaoxue Sun is located at the intersection of165438+1October 22 -23 at longitude 240 degrees.

The snowy day is located at 255 degrees of the yellow meridian, and the node is 65438+February 6-8.

In winter, the solstice sun is located at 270 degrees of the yellow meridian and intersects with 65438+February 2 1-23.

The slight cold sun is located at 285 degrees of the yellow meridian, and the node is 65438+1October 5-7.

The severe cold day is located at 300 degrees of the Yellow Meridian and intersects with 65438+1October 20th -2 1.

Solar term date speed algorithm: general birthday formula -[y× d+c]-l

Y= year, D=0.2422, L= leap year, and C depends on solar terms and year.

The C value of beginning of spring in this century is 4.475, and the date of beginning of spring in 20 17 is as follows: [2065438+07× 0.2422+4.475]-[2065438+07/4-15] = 492-489 = 3.

So the beginning of spring date of 20 17 is February 3rd, as simple as that.

Solar term song

Spring rain shocks spring and clear valley days, summer is full of mountains and summer is connected with heat, autumn dew is cold and frost, and winter snow drifts. The first half of the year is June 2 1 day, and the second half is August 23. The dates of the two festivals are fixed every month, with a maximum difference of one or two days.