How many days are there between white dew and frost?

The difference between white dew and frost is 44 to 47 days. White dew: The weather turns cooler and the dew condenses and turns white. The festival falls on September 7-09 in the Gregorian calendar. Frost: The weather is getting colder and frost begins. The festival falls on October 23-24 in the Gregorian calendar. Therefore, the difference between white dew and frost is 44 to 47 days.

1. Bailu

Bailu is the fifteenth of the twenty-four solar terms. This solar term represents the end of the Mengqiu season and the beginning of the Mid-Autumn season. It reflects the temperature changes in nature. important orders. When Bailu arrives, it’s truly autumn, and Bailu has basically ended the sweltering heat of summer. During the white dew season, the sky is high and the clouds are clear, the air is cool and the wind is cool. The temperature difference between morning and evening is large. You will feel a slight chill at night, and you can clearly feel that the cool autumn has arrived.

Bailu calculation formula: [Y*D+C]-L

Interpretation of the formula: Y=last 2 digits of the year, D=0.2422, C=leap year, 21st century C= 7.646, C=8.44 in the 20th century, L=the last two digits of the year divided by 4.

For example: the date of Bailu in 2013 = [13×0.2422+7.646]-[13/4]=10.7946-3.25=7.5446, round the number, September 7 is Bailu.

Exception: Add 1 day to the calculation in 1927.

2. Frost's Descent

Frost's Descent is the eighteenth of the twenty-four solar terms. The weather begins to get colder with frost, which is the last solar term in autumn, a solar term that reflects temperature changes, and is the transition from autumn to winter, which means winter is about to enter. As the saying goes, "Frost kills all grass." After frost, plants gradually lose their vitality and the earth becomes desolate.

Frost date calculation formula: [Y*D+C]-L

Formula interpretation: Y=last 2 digits of the year, D=0.2422, L=leap year, 21st century C =23.438, C=24.218 in the 20th century.

Example: Frost date in 2088 = [88×0.2422+23.438]-[88/4]=44-22=22, frost will fall on October 22.

Exception: Add 1 day to the calculation result in 2089. Extended information

1. Songs of the Twenty-Four Solar Terms

Spring rain shocks the spring and clears the valley, and the summer is full of awns and the summer heat is connected.

Autumn is dew, autumn is cold and frost is falling, winter is snowing and there is little severe cold in winter.

The two sections of each month will not change, with a maximum difference of one or two days.

In the first half of the year it was 621, and in the second half it was 823.

2. Related proverbs

1. Less rain in summer and early frost in autumn. The summer rain soaks through and the frost period recedes.

2. Autumn rain penetrates the ground, and frost comes late.

3. Autumn geese come early, and so does frost.

4. There is no dew on a windy night, and there is no frost on a cloudy night.

5. There will be heavy frost and dew tonight, and the sun will be red tomorrow morning.

6. Crops are generally harvested in early autumn, so don’t slack off in cutting and rolling.

7. Apply enough base fertilizer and plow and rake quickly, and return the straw to the soil and bury it.

8. Wheat can now be grown in the barren land of the mountainous Hetao.

9. Chasing and watering cabbage and radish, picking winter melon and pumpkin at home.

Baidu Encyclopedia - Twenty-Four Solar Terms

Baidu Encyclopedia - Bailu

Baidu Encyclopedia - Frost Descent