When is the Millennium in 2022?

What time is the Millennium in 2022? How many minutes and seconds?

The solar terms of the Millennium in 2022 are 23: 32: 7 on September 7, 2022 in Gregorian calendar and Wednesday, August 12 in lunar calendar.

Millennium is the solar term with the largest temperature difference between day and night. Since the Millennium, the summer monsoon has been gradually taken over by the winter wind, and the cold air has gradually moved south frequently. In addition, the position of the direct sunlight on the ground moves south, and the sunshine time in the northern hemisphere is shortened and the sunshine intensity is weakened. It is often sunny and cloudy at night, and the ground radiation dissipates quickly, and the temperature drops gradually. There is a saying that "the autumn equinox of the white dew is cold all night." Starting from the Millennium solar terms, according to the standard of dividing the four seasons by climatology, all localities began to enter autumn one after another. At this time, the temperature difference between day and night in China can reach 8℃- 16℃.

The origin of the Millennium

When the sun reaches 165 degrees, it is the Millennium solar term. Millennium is the third solar term in autumn, marking the end of Qiu Meng and the beginning of Mid-Autumn Festival. Dew is water droplets formed by condensation of water vapor on the ground or near-earth objects due to temperature drop. So the Millennium actually indicates that the weather is getting cold. At this time, people will obviously feel that the hot summer has passed and the cool autumn has arrived, and the temperature difference between day and night can reach more than ten degrees.

Yang Qi reached its peak in the summer solstice, and these two extremes must be reversed, and Yin Qi also rose at this time. When it comes to the White Dew, the yin gradually increases, and the morning dew gradually thickens and condenses into a layer of white water drops, so it is called the White Dew. There is also a saying that before and after the Millennium, the summer heat gradually disappeared, the yin of heaven and earth rose and spread, the weather gradually turned cold, and the dew in the morning became thicker and thicker, condensing into a layer of white water droplets on the surface of grass leaves. The ancients used the four seasons to match the five elements. Autumn is golden yellow and golden white. Because it is described as white, it is called "Bailu".

Characteristics of solar terms in the Millennium

"White dew" is a seasonal dew reflecting the temperature change in nature, which is a unique natural phenomenon after the solar term of "White dew". The weather at this time, as the Book of Rites said: "The cool wind comes, the dew falls, and cicadas sing." According to the explanation of "white dew" in the twenty-four solar terms-"water and soil condense dew, autumn belongs to gold, golden white and white dew, and qi begins to be cold".

The ancients also said in Xiao Weijing: "The fifteenth day after the summer heat is white dew", and the yin is getting heavier and heavier, and the dew condenses into white. In fact, meteorology shows that at this time of the solar term, the weather becomes cool and the sun is still very hot during the day. But as soon as the sun returns to the mountains, the temperature will drop rapidly. At night, the water vapor in the air will condense into tiny water droplets, which are very densely attached to the green stems, leaves or petals of flowers and trees, showing white color. Especially after the morning sun exposure, it looks more crystal-clear and attractive, thus obtaining the beauty of "White Dew".

weather

After plants began to have dew entering the Bailu solar term, summer monsoon was gradually replaced by winter wind, cold air turned to attack, and warm air gradually retreated. Cold air going south in batches will often bring a certain range of cooling. People like to use the proverb "it's cold in the autumn night in the white dew" to describe the situation that the temperature drops rapidly.

At this time, the precipitation in northern China is obviously reduced, and the autumn is crisp and dry. During this period, the first autumn rain in the middle and lower reaches of the Yangtze River can often alleviate the previous water shortage. However, if the cold air meets a typhoon, or the cold and warm air are evenly matched, the two sides are in a dilemma, and heavy rain or low temperature and continuous rain are not good for the growth of autumn crops. Continuous rainy weather often occurs in the eastern part of Southwest China, South China and West China.

There may be heavy rain caused by tropical weather system (typhoon) in the southeast coast, especially in the south China coast. In addition, autumn drought, forest fire and first frost may also occur in some areas at this time. If the summer droughts in the middle and lower reaches of the Yangtze River, West China and South China are not nourished by autumn rain, summer and autumn droughts may all form. There is a proverb that says, "There is no drought in spring, and the drought in autumn is halved. Building houses in spring drought and breaking grain in autumn drought. "

In some northern areas, such as Shaanxi, Shanxi, Gansu, North China and other places in the northwest, autumn precipitation is inherently less. If severe autumn drought occurs, it will not only affect the harvest of autumn crops, but also delay the sowing and emergence growth of autumn sowing crops and affect the harvest of the following year. In addition, with the autumn drought, especially the dry air and the increasing wind in mountainous forest areas, the forest fire risk in autumn began to enter a period of high incidence.

On August 15th, the wild goose gate opened, and the geese came, with frost on their heads. Frost is caused by the invasion of cold air. The daily average temperature is above 0℃, and the surface temperature drops below 0℃. The water between crop cells freezes, constantly absorbing the water in the cells, leading to cell dehydration and crop withering or death. Sometimes, although there is no frost on the surface of plants, crops will still be frozen because the surface temperature is below 0℃. This phenomenon is called black frost and it is also a kind of frost.