Astronomical expression of the twenty-four solar terms in the solar year

The number in the circle is the longitude of the yellow sun.

(Latitude)

Tropic of Cancer+23 27&; Acute; Summer solstice

+22 36 & amp； Acute; Summer heat 105 90 75 awn seeds

+20 10 summer 120 60 xiaoman

Northern seasonal line+16 2 1 & acute; Beginning of autumn135 135————————————45 long summers.

+ 1 1 29。 Acute; & acute; Hot summer 150 30 grains of rain.

+05 55 & amp； Acute; Millennium 165 15 Qingming

Equator+00 00&; Acute; Autumnal equinox180 ———————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————.

-05 55 & amp； Acute; Cold dew 195 345 fright

- 1 129 & amp； Acute; 2 10 330 first frost rain

South seasonal line-16 2 1 & acute; Beginning of winter 225 ————————————— 315 beginning of spring.

-20 10 & amp； Acute; & acute; Light snow 240 300 cold

-22 36 & amp； Acute; Heavy snow 255 270 285 slight cold

Capricorn-23 27&; Acute; Winter solstice

Attachment: Longitude, declination and approximate date table of 24 solar terms.

About date about date about date about date

Solar term yellow meridian declination natural calendar Gregorian calendar

Beginning of spring 3 15- 16 2 1 acute; 0 1-0 12-04 | beginning of autumn135+1621&; Acute; 07-0 1 08-08

Rainwater 330-1129&; Acute; 01-1602-19 | Chu Shu150+1129&; Acute; 07- 16 08-23

345-05 55&; Acute; 02-0 13-06 | Bailu165+05 55&; Acute; 08-0 1 09-02

Vernal equinox+00+00 00&; Acute; 02- 16 03-2 1 | autumnal equinox180-0000 &; Acute; 08- 16 08-22

Qingming+15+0555 &; Acute; 03-0 14-05 | cold dew195-05 55&; Acute; 09-0 1 10-03

Grain Rain+30+1129&; Acute; 03- 16 04-20 | First Frost 210-129&; Acute; 09- 16 10-22

Long summer +45+ 16 2 1 & acute; 04-0 15-05 | beginning of winter 225-1621&; Acute; 10-0 1 1 1-06

Xiaoman +60+20 10 & acute; 04- 17 05-2 1 | xiaoxue 240-2010&; Acute; 10- 16 1 1-2 1

Miscanthus +75+22 36 & acute; 05-03-06 | Heavy snow 255-22 36&; Acute; 1 1-0 1 12-06

Summer solstice +90+23 27 & acute; 05- 19 06-22 | winter solstice 270-23 27&; Acute; 1 1- 16 12-2 1

Summer105+22 36&; Acute; 06-05-07-08 | Slight cold 285-22 36&; Acute; 12-0 1 0 1-05

Summer120+2010&; Acute; 06-2 17-24 | Dahan 300-2010&; Acute; 12- 16 0 1-20

You can't forget to eat jiaozi on the solstice every winter. You'll freeze your ears if you don't eat it. I won't forget that eating jiaozi for more than a week is the year of the sun. But the school has to wait at least half a month for the winter vacation, which is a month longer. This means that New Year's Day is in winter. Didn't you say "Spring is the beginning of a year"? Isn't the Spring Festival just to welcome the Spring Festival? Is this Gregorian calendar year too biased? Please take a closer look at this "Astronomical Map of Twenty-four Solar Terms in the Year of the Sun" and find out where the winter solstice is. Look, it's at the bottom, in the middle of winter. Beginning of spring has three solar terms, about one and a half months and 45 days. Then New Year's Day is just a few days before the slight cold. Do you think it is crooked? You don't care, he doesn't care, everyone doesn't care,/kloc-0.3 billion people don't care, and 6 billion people don't care. Then we can only let distorted calendars prevail. Don't you want spring to be the beginning of the year to welcome the new year? Then at least show your attitude and say something!

What do you think of the natural map of this solar year? Look how wonderful this natural arrangement is! How clear, natural, symmetrical and beautiful the dividing line between the four seasons is! Our ancestors discovered it thousands of years ago and created a scientific and accurate solar calendar based on it. This solar calendar correctly chose beginning of spring, the first day of spring, as the first day of the year. It opens a reasonable and scientific folk custom that spring is the beginning of a year and New Year is spring. But it was suppressed by the summer calendar dominated by the lunar calendar. The beautiful moon has become the main calendar that dominates people's life in China. The solar calendar only becomes an accessory of the summer calendar. "Year" only plays a role in limiting the "summer calendar year" from going too far. But "year" is distorted after all. Spring Festival is either a waiting spring or a wrong spring. People can only post Spring Festival couplets and sing Haruka. Fortunately, I can see the beautiful figure of Chang 'e on time every month. It is enough for farmers to grow crops and check the summer calendar with 24 solar terms.

However, Li Xia was also forced to step down, and the Gregorian calendar from the west has ruled for nearly a hundred years. It's too crooked. Why do we allow it to remain in power? Why don't we use the scientific and correct creation of our ancestors to serve the present and the future? Why is this precious intangible cultural heritage not defended and carried forward?

This natural map is very scientific and correct. The only drawback is opacity. Its 24 solar terms interval is unstable during the day, and its arrangement is not regular. This needs us to process, and people can't get something for nothing. Cars and planes naturally do not grow for human beings, and today's high-yield wheat and rice do not grow naturally. This depends on the wisdom of people to create. But creation cannot be divorced from the laws of nature. So we should make it transparent according to the natural map of the 24 solar terms. Actually, it's not difficult "Natural calendar scheme" is the author's attempt.

I only did three things:

First of all, I estimated and determined the date of spring. I chose February 4th in the solar calendar. Due to the good leap method in the Gregorian calendar, beginning of spring Day falls on February 3rd, 4th and 5th.

Second, the length of natural seasons is about: spring 9 1, summer 94, autumn 9 1, winter 89. I adjusted them slightly as follows:

90 days in spring, 95 days in summer, 90 days in autumn and 90 days in winter. This decrease is mainly natural creation. Optimistic estimation shows that 90 equals three 30s, and 95 equals 90 plus 5. This is to prepare for the next month.

Third, in March, the 30th of each month is a given day. It depends on how to arrange three months in summer. There are two options. One is: 32/32/3 1 allocation. The other is: 30/30/35 allocation. Each has its own advantages. The first way is to be closer to the natural solar terms. But two new varieties were born in one month, and the multiple advantage of 5 was lost. The second type keeps two 30 and only adds a new variety 35, which is still a multiple of 5. In June, the extra five days can be regarded as the transition in the first half of the year. The easiest way to leap year is to add it after five days. Special treatment for these five days (or six days), 12 months, four seasons and the first half of the year are equal. Such a coincidence seems very lucky.

For the record, the author's natural calendar scheme has not improved the leap method of the Gregorian calendar for the time being, and it can be supplemented at any time if a new leap method is adopted in the future.

After these three things, will the 24 solar terms be gone? Whether there is a simple regularity. This is the standard of final judgment. Fortunately, the author chose the approximate date of 24 solar terms according to the calendar of this century. The nine months of spring, autumn and winter are 1 and 16 respectively, and the solar term interval is 15. The six solar terms in summer are pushed back from the standard 1 and 16 days by 0, 1, 2, 3, 4 and 5 days, with an interval of 16 days. The regularity is simple and the error is less than one day. It can completely meet the standard. Meet the accuracy requirements of ordinary people. Farmers can farm safely according to this approximate solar term.

The calendar that has been used for a long time is attached.