What is the meaning and symbol of the summer solstice?

The summer solstice is the 1th of the 24 solar terms. After thousands of years of development, solar terms have been given different meanings and symbols, and so has the summer solstice. The following is "What is the meaning and symbol of the summer solstice" carefully arranged by me for everyone, for reference only, hoping to help everyone. What is the meaning and symbol of the summer solstice?

The summer solstice is the 1th of the 24 solar terms. Fight refers to the afternoon. The sun longitude is 9. On June 21-22 of the Gregorian calendar. The summer solstice is the turning point of the sun's northward travel. After the summer solstice, the direct point of the sun began to move south from the Tropic of Cancer (23 26' north latitude). For the area north of the Tropic of Cancer in China, after the summer solstice, the height of the noon sun began to decrease day by day. For the area south of the Tropic of Cancer in China, the height of the noon sun began to decrease day by day after the summer solstice and after the sun returned to the south directly again.

time of summer solstice

The summer solstice is the longest day in a year, that is, the time when the night is short in our geography. The summer solstice is also the earliest solar term among the 24 solar terms, and it is the summer solstice on June 21st or 22nd of the solar calendar every year.

The start time of the summer solstice in 222 is:

17:13:4 on June 21st, 222, and Tuesday on May 23rd of the lunar calendar.

The end time of the summer solstice in 222 is:

1:37:49 on July 7, 222, and Wednesday on May 24th of the lunar calendar.

summer solstice means

it means that hot summer is coming. According to the Transcript of Compliance with the Constitution: "The sun arrives in the north, the day is long, and the shadow is short, so it is called the summer solstice. To the best, it is extremely good. " That is to say, the name of the summer solstice only represents the solar term on the day of the summer solstice, indicating that the hot summer summer is coming.

the summer solstice is in mid-may. Summer is the biggest, the most extreme, everything grows and flourishes here to the extreme, and the sun is the most extreme, so it is the shortest night and the longest day in a year, and it is the white night near the extreme, which is the most poetic day in a year.

summer solstice, also known as "summer festival" and "summer solstice festival". On the summer solstice in ancient times, people prayed for disaster and prosperity by offering sacrifices to God. During the summer solstice, the temperature in most parts of China is high, the sunshine is sufficient, the crops grow rapidly, and the physiological and ecological water demand is more. At this time, the precipitation has a great influence on agricultural output, and there is a saying that "the summer solstice raindrops are worth thousands of dollars".

Meteorological changes

Temperature and precipitation

After the summer solstice, although the direct point of the sun began to move southward from the Tropic of Cancer, the days in the northern hemisphere began to shorten gradually, but because the heat radiated by the sun to the ground is still more than that radiated from the ground to the air, the temperature will continue to rise in the following period, so there is a saying that the summer solstice is not too hot. As the saying goes, "the heat is in the dog days", and the real hot weather is from mid-July to mid-August on the Gregorian calendar.

The position where the sun shines directly on the ground in the summer solstice reaches the northernmost part of the year, and the daylight time in all parts of the northern hemisphere reaches the longest in the whole year. During this period, the temperature in most parts of China was high, the sunshine was sufficient, the crops grew rapidly, and the physiological and ecological water requirements were more. After the summer solstice, the ground is heated strongly, and the air convection is strong, and thunderstorms are often easy to form in the afternoon to evening. This kind of hot thunderstorm suddenly comes and goes, and the rainfall range is small. People call it "summer rain separates the fields".

The "summer solstice" is the starting point of midsummer. Although it has not yet reached the hottest day of the year, it is not far from "falling". From the "summer solstice", after three "Geng days", it entered the hottest dog days of the year, the so-called "summer solstice three Geng several heads fell." High temperature, high humidity and occasional thunderstorms are the weather characteristics after the summer solstice.

"Standing without a shadow"

On the day of the summer solstice, the sun is almost direct to the Tropic of Cancer, and it is absolutely (nearly) direct at noon, and there will be a wonder of "Standing without a shadow" in the area near the Tropic of Cancer. The phenomenon of "standing without a shadow" only exists in the area south of the Tropic of Cancer, and there are two times in a year when the sun shines vertically on the ground. At present, there are five Tropic of Cancer signs in Chinese mainland, which are located in Shantou, Conghua and Fengkai in Guangdong, Guiping in Guangxi and Mojiang in Yunnan.

Zhanjiang, Maoming, Yangjiang, Yunfu, Zhaoqing, Jiangmen, Foshan, Zhongshan, Zhuhai, Shenzhen, Dongguan, Huizhou and Shanwei, which are located in the south of the Tropic of Cancer in Guangdong Province, can be seen standing without a shadow twice a year. People living on the Tropic of Cancer and its nearby areas to the south can set up a pole in the sun at noon a few days before and after the summer solstice and observe how "immediate effect" becomes "no shadow".

Convective weather

After the summer solstice, the ground is heated strongly, and the air convection is strong, and thunderstorms are often formed in the afternoon to evening. This kind of hot thunderstorm suddenly comes and goes, and the rainfall range is small. People call it "summer rain separates the fields". Liu Yuxi, a poet in the Tang Dynasty, skillfully used this kind of weather to write a famous poem, "Sunrise in the east and rain in the west, the road is sunny but sunny." The heavy precipitation brought by convective weather is not all as beautiful as described in the poem, and often brings local disasters.

Thunderstorm days

During the summer solstice, the temperature in most parts of China is high, the sunshine is sufficient, the crops grow rapidly, and there are more physiological and ecological water demands. At this time, the precipitation has a great influence on agricultural output, and there is a saying that "the summer solstice raindrops are worth thousands of dollars". At this time, the precipitation in the middle and lower reaches of the Yangtze River can generally meet the needs of crop growth.

after the summer solstice, the ground is heated strongly, and the air convection is strong, which is easy to form thunderstorms. This kind of hot thunderstorm suddenly comes and goes, and the rainfall range is small. In some areas, there may be rainstorm weather, which is easy to cause floods and even threaten people's lives and property. Attention should be paid to strengthening flood control.

Meiyu in Jianghuai

The summer solstice season is the "Meiyu" season in Jianghuai area. At this time, it is the yellow ripening period of plums in the south of the Yangtze River. The air is very humid, and cold and warm air masses meet here, forming a trough of low pressure, which leads to continuous rainy weather. In this weather, the utensils are moldy, and the human body feels uncomfortable. Some mosquitoes breed quickly, and some intestinal bacteria are easy to breed. At this time, we should pay attention to the hygiene of drinking water and try not to eat raw and cold food to prevent the occurrence and spread of infectious diseases.

High temperature sauna

Like the winter solstice, the summer solstice is a solar term reflecting the change of seasons. After the summer solstice, although the direct point of the sun gradually moved to the south, the day in the northern hemisphere was shortened day by day and the night was lengthened day by day. However, because the heat radiated by the sun to the ground is still more than that radiated from the ground to the air, the temperature will continue to rise in the future, so there is a saying that the summer solstice is not too hot.

the summer solstice means that the hot weather officially begins, and then it gets hotter and hotter, so there is a folk saying that the summer solstice is not too hot. After the summer solstice, although the direct point of the sun gradually moves to the south, the day is shortened and the night is lengthened in most parts of the northern hemisphere, but the heat radiated by the sun to the ground is still more than that radiated from the ground to the air, so the temperature will continue to rise in the future.

Phenomena

In some ancient Chinese literary works, Xiaoman was divided into three phases: the first phase, when the antlers were dissolved, meant that the deer's horns were forward, so they belonged to Yang, and it was believed that the yin qi was born on the summer solstice, and the yang qi began to decline, so the positive antlers began to fall off, while Mi, because it belonged to Yin, fell off at the winter solstice (Mi and deer belonged to the same family, but the ancients thought that both belonged to Yin and Yang). When cicadas begin to sing, it means that male cicadas will flap their wings and sing after the summer solstice. Pinellia ternata is born in the third season, which means that Pinellia ternata is a shade-loving herb, so it is named because it was born in a swamp or paddy field in midsummer. It can be seen that in the hot midsummer, some shade-loving creatures began to appear, while positive creatures began to decline.

is the summer solstice the hottest time?

no, it's hottest in dog days.

why is it hot in dog days?

after entering the volt, the humidity of the surface becomes higher, and more heat is absorbed and less heat is emitted every day, so the heat on the surface of the ground accumulates, so it gets hotter every day, and when it enters the volt, the accumulated heat on the ground reaches its peak, and the weather is the hottest. In addition, there is much rain in summer, the air humidity is high, and the heat capacity of water is much larger than that of dry air, which is also an important reason for the sultry weather. In July and August, the subtropical high intensified. Under the control of the subtropical high, the downward flow inside the high pressure made the weather sunny and partly cloudy, which was conducive to sunlight, and the ground radiation warmed up, making the weather even hotter.