When will you come this autumn?

Beginning of autumn is the 13 solar term in 24 solar terms, and beginning of autumn falls on August 7th or 8th every year. "Autumn" means that summer is cool, which means the beginning of autumn. When we arrived in early autumn, the phoenix tree began to shed its leaves, so there is an idiom "When you lose a leaf, you know autumn". Literally, the word "autumn" consists of "valley" and "fire", indicating the maturity of five grains. Autumn is the transitional season when the weather turns from hot to cold, and then from cold to cold. Beginning of autumn is the first solar term in autumn.

When the sun returns to the south from the Tropic of Cancer every year, it reaches longitude 135, which is beginning of autumn. Twenty-four solar terms: "July Festival, set up a word to solve spring (beginning of spring). Autumn is also awkward, and this is the thing. " Beginning of autumn generally indicates that hot summer is coming and autumn is coming. After beginning of autumn, although the summer heat is hard to get rid of for a while, there is still the afterglow of "autumn tiger". beginning of autumn is also called beginning of autumn, but the general trend is that the weather is getting colder and colder. Due to the different climates in different parts of the country, the start time of autumn is also inconsistent. In climatology, autumn begins with the day when the daily average temperature drops steadily below 22℃ every five days. This division method is in line with the local reality, but it is quite different from the date of beginning of autumn in the middle and lower reaches of the Yellow River. After beginning of autumn, early rice harvest, late rice transplanting and autumn crops entered an important growth and development period in central China. The ancients regarded beginning of autumn as an important moment at the turn of summer and autumn, and always attached great importance to this solar term.

In ancient China, beginning of autumn was divided into three stages:

Waiting for the cool breeze;

Second, wait for the white deer to be born;

Three are waiting for cicadas to sing.

Third-class means: people will feel cool when it is windy, and the wind at this time is different from the hot air in summer; There will be fog on the earth in the morning; In autumn, I felt gloomy and cicadas began to sing.

Date calculation:

[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=7.5, and 20th century =8.35.

For example, the date of beginning of autumn in 2088 = [88× 0.2422+7.5]-[88/4] = 28-22 = 6, and August 6th is beginning of autumn.

Exception: The calculation result in 2002 is 1 day.

20 14 beginning of autumn time: August 7, 2004 2065438+22: 02-August 23, 2004 2065438+ 12:45.

Gregorian calendar time: 2065438+August 7, 2004 at 22:02:28.

Lunar calendar date: July (small) December Thursday