Songs of the Twenty-Four Solar Terms
The spring rain shocks the clear valley sky, the summer is full of awns and the summer heat is connected;
Autumn is exposed, autumn is cold and frost falls, winter is snowing, and winter is cold. .
The dates of the two festivals are fixed each month, with a maximum difference of one or two days.
In the first half of the year, there are six sweets and one, and in the second half of the year, there are eight sweets and three.
English translation:
Twenty-fourSolarSongs
Springrain, springandclearvalley, summerandsummerareconnected.
Autumndewautumnfrostfall, wintersnowwintersizecold.
Two festivals are scheduled every month, with a maximum difference of one or two days.
In the first half of the year, 6Ganyi was the first, while in the second half, 8 Gansan was the third.
Nine-Nine Songs
If you don’t take action in 1929, you will walk on the ice in 3949.
On the 5th, 9th and 69th, I watched willows along the river, and on the 79th, the river bloomed, and on the 8th, the wild geese came.
Nine-nine plus one-nine, the cattle are everywhere.
English translation:
NineNineSongs
Notin1929, walkingonicein3949.
Ninety-ninesawwillowsalongtheriver,seven-nineopenedeight-ninegeese.
Ninety-nineplusnineteen, farmingcattleeverywhere.
The twenty-four solar terms are divided according to the position of the earth on the ecliptic. As the sun starts from the vernal equinox (zero degrees of ecliptic longitude, when the sun shines vertically on the equator), every 15 degrees it advances is a solar term. It runs for one week and returns to the vernal equinox, which is a tropical year, and it combines 360 degrees, so it is divided into 24 solar terms.
The twenty-four solar terms reflect the annual apparent motion of the sun, so their dates are relatively fixed in the Gregorian calendar. The solar terms in the first half of the year are on the 6th, the middle solar terms are on the 21st, and the solar terms in the second half of the year are on the 6th. The solar term is on the 8th and the middle qi is on the 23rd. There is no difference between the two by 1 to 2 days. The earth orbits the sun once every 365 days, 6 hours, 9 minutes and 10 seconds, and it also rotates once every 24 hours.
Because the orbital plane of the Earth's rotation is not consistent with the equatorial plane, but maintains a certain inclination, the position of the direct sunlight hitting the Earth is different throughout the year. In the northern hemisphere, when the sun shines directly on the Tropic of Cancer (23°26' north latitude), it is called the summer solstice in astronomy, and when the sun shines directly on the Tropic of Cancer (23°26' south latitude), it is called the winter solstice. The summer solstice and winter solstice mean that it is already in the middle of summer and winter.
When the sun shines directly on the equator twice in a year, it is the vernal equinox and the autumnal equinox respectively. This is also the middle of spring and autumn. During these two days, the day and night are as long as each other.