When will autumn come?

It's autumn after beginning of autumn! On August 7th or 8th every year, beginning of autumn is considered as the time when the sun reaches 135. "It's so hot after beginning of autumn". Before and after beginning of autumn, the temperature in most parts of China is still high. Generally speaking, the autumn wind in the capital Beijing begins to cool down in early September, and the autumn around Qinhuai begins in mid-September. Autumn winds blow to Lishui, Zhejiang, Nanchang, Jiangxi, and Hengyang, Hunan in early June 165438+ 10. The news of early and middle autumn reaches Leizhou Peninsula, and the footsteps of autumn reach Yaxian County, Hainan, which is the end of the world. It is almost New Year's Day.

When does autumn begin?

There are several ways to divide the four seasons:

1. Astronomical division method From the astronomical phenomenon, the change of four seasons is the seasonal change of the length of day and night and the height of the sun. In a year, the season with the longest day and the highest sun height is summer, the season with the shortest day and the lowest sun height is winter, and the transitional season between winter and summer is spring and autumn. Therefore, the astronomical division of the four seasons is based on the vernal equinox (March 2 1), summer solstice (June 2 1), autumn equinox (September 2 1) and winter solstice (February 2 1). Namely: spring from the vernal equinox to the summer solstice, summer from the summer solstice to autumn, autumn from the autumn equinox to the winter solstice, and winter from the winter solstice to spring.

2. The meteorological division method of meteorological department: March-May is usually spring, June-August is summer, 9-1 65438+1October is autumn, 12- February is winter,1,April, July and the following year.

3. In the ancient classification, beginning of spring (February 4th or 5th) is beginning of spring, Changxia (May 5th or 6th) is long summer, beginning of autumn (August 7th or 8th) is beginning of autumn, and beginning of winter (165438+1October 8th or 9th) is beginning of winter.

In China, it is customary to use the month of the lunar calendar to divide the four seasons. Lunar calendar1~ March is spring, April-June is summer, July-September is autumn, and 10 ~ 12 is winter. The first day of the first month is the first day of the year and the first day of spring, so it is also called the Spring Festival.

When did autumn begin?

On August 7th or 8th every year, beginning of autumn is considered as the time when the sun reaches 135. 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 disappear for a while, there is still the afterglow of "autumn tiger", 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. Autumn means that summer is cool and autumn begins. 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.

According to records, the plane tree planted in the basin was moved into the temple by Li Qiuqiu Palace in the Song Dynasty. It's time for "beginning of autumn". Tai Shigong shouted, "Autumn is here." After the play, the phoenix tree dropped one or two leaves to express autumn. In fact, according to the standard of climatic division of seasons, the beginning of autumn is when the average daily temperature drops below 22℃ in the second half of the year. There are few areas in China where "beginning of autumn" falls in autumn, except the summer-free areas which are connected in winter and spring and autumn. The earliest areas are in Qiu Lai, Heilongjiang and northern Xinjiang, and will also fall in mid-August. In general, the autumn wind in the capital Beijing will be cooler in early September, and the autumn around Qinhuai begins in mid-September. The autumn wind will blow to Lishui, Zhejiang, Nanchang, Jiangxi and Hengyang, Hunan 165438+ 10 in early June, and the news of autumn will reach Leizhou Peninsula, and the footsteps of autumn will reach the "ends of the earth".

"It's so hot after autumn", the temperature is still high in most parts of China around beginning of autumn, and all kinds of crops grow vigorously. Mid-season rice blooms and bears fruit, round stems overnight, soybean pods, corn ears, cotton bolls and sweet potato tubers expand rapidly, and the demand for water is very urgent. The drought in this period will cause irreparable damage to the final harvest of crops. Therefore, there are sayings that "the rice turns into rice after three rains in beginning of autumn" and "the autumn rain is falling, and gold is everywhere". Double-night growth is in a high-temperature to low-temperature environment, so we must seize the favorable opportunity of high temperature, topdressing and ploughing to strengthen management. At present, it is also an important period for cotton to protect peaches and catch autumn peaches. "Cotton beginning of autumn, the height is pulled together." In addition to applying quick-acting fertilizer to the fields with poor growth, we should also do a good job in topping, pruning, removing old leaves and wiping redundant buds in time to reduce rotten and dropped bolls and promote normal maturity and boll spitting. Autumn ploughing in tea garden should be carried out as soon as possible. As the agricultural proverb says, "seven gold diggers and eight silver diggers", autumn tillage can eliminate weeds, loosen soil and improve water conservation and storage capacity. If combined with fertilization, autumn shoots can grow better. Before and after beginning of autumn, the northern Chinese cabbage should be sown quickly to ensure sufficient heat conditions before the low temperature comes, and strive for high yield and high quality. Sowing is too late, the growth period is shortened, the growth of vegetable trees is small, and the core is not solid. Beginning of autumn season is also the concentrated occurrence period of many crop diseases and insect pests, such as Chilo suppressalis, Rana chensinensis, rice planthopper, cotton bollworm and Asian corn borer. It is necessary to strengthen prediction and prevention. The sowing of winter wheat in the north is about to begin, and preparations such as soil preparation and fertilization should be made as soon as possible.

What time period is autumn?

Every September-165438+ October

When is autumn?

March, April and May are spring, June, July and August are summer 9, 10, 165438+ 10 is autumn 12, 1, and February is winter and spring: trees and grasslands will turn green and dead. ) it will turn khaki in summer: weeds on the ground are also autumn: trees and grass will turn yellow-green, and the evening will be earlier and longer (the orange sky in the evening is super beautiful). Winter: Trees and grass turn khaki, and traps and fossils are hard to see. At night, the sky is beautiful purple. After it snows, the ground turns white, and there will be snow at the top of the tree. Remember to make a snowman! The perfect snowman will give you furniture.

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

It's fall here. When is late autumn?

Generally speaking, autumn in China is July, August and September of the lunar calendar, which are early autumn, Mid-Autumn Festival and late autumn respectively. Therefore, the last month of autumn, that is, September of the lunar calendar, is called late autumn.

20 16 when does school start in autumn?

Most provinces in junior high school and senior high school are September 1, which is very random. Generally speaking, classes begin sometime before August and sometime after September.