The first frost will come in a few days.

The difference between the Millennium and the first frost is 44~47 days. White dew: The weather turns cold and the dew condenses into white. Gregorian calendar 07-09 September. First frost: it's getting colder and colder, frosty. Gregorian calendar 65438+1October 23-24. So the difference between the Millennium and the first frost is 44~47 days.

First of all, the Millennium

Millennium is the fifteenth of the twenty-four solar terms. This solar term marks the end of the Qiu Meng season and the beginning of the Mid-Autumn Festival, which is an important festival reflecting the temperature changes in nature. Even if it is really the autumn of the Millennium, the Millennium has basically ended the sultry summer. In the Millennium, the sky is high and the clouds are light, the wind is crisp, and the temperature difference between morning and evening is large. At night, you will feel a little cold and obviously feel that cool autumn has arrived.

Millennium calculation formula: [y * d+c]-L.

Interpretation of the formula: Y= 2 digits after years, D=0.2422, C= leap year, 2 1 century C=7.646, 20th century C=8.44, and L= 2 digits after years divided by 4.

For example, the Millennium date of 20 13 = [13× 0.2422+7.646]-[13/4] =10.7946-3.25 = 7.5446, and September 7th is the Millennium.

Exception: 1927 plus 1 day.

Second, the first frost

The first frost is the eighteenth of the twenty-four solar terms. Cold weather begins with the first frost, which is the last solar term in autumn. It reflects the change of temperature and is the transition from autumn to winter, which means the coming of winter. As the saying goes, "the first frost kills a hundred herbs." After the first frost, the plants gradually lost their vitality and the land was desolate.

Calculation formula of first frost date: [Y*D+C]-L

Interpretation of the formula: Y= two digits after the number of years, D=0.2422, L= leap year, 2 1 century C=23.438, and 20th century C=24.2 18.

For example, the frost date in early 2088 = [88× 0.2422+23.438]-[88/4] = 44-22 = 2265438+1the first frost on October 22nd.

Exception: calculation result in 2089 plus 1 day.

Extended information 1, 24 solar terms Song Dynasty

The spring rain shakes the spring and clears the valley, and the summer is full of mountains and summers.

Autumn dew, autumn frost, little snow in winter and cold in winter.

The two festivals remain unchanged every month, with a maximum difference of one or two days.

The first half of the year is June 2 1 day, and the second half is August 23.

Second, related proverbs

1, less rain in summer and early frost in autumn. Summer rain soaked, frost period receded.

2. Autumn rain penetrated the ground, and first frost came late.

Autumn geese come early, first frost comes early.

4, windy night without dew, cloudy night without frost.

The frost is heavy tonight, and the sun will be red tomorrow morning.

6, early autumn crops are generally harvested, and cutting, transportation and rolling are not slack.

7. The base fertilizer is paved with a quick tillage rake, and the straw is buried in the ground.

8. In the barren land of high mountain Hetao, wheat can be planted at this time.

9. Cabbage and radish are chased and watered, and melons and pumpkins are picked home.

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