Traditional Culture Encyclopedia - The 24 Solar Terms - In which month is the day short?
In which month is the day short?
Winter solstice is one of the twenty-four solar terms and one of the most important solar terms. Winter solstice is a solar term divided by astronomy, which was called "short day" and "short day" in ancient times. On the solstice in winter, the sun is at 270 degrees of the yellow meridian, and the sun shines directly on the tropic of Capricorn, which is the shortest place in the northern hemisphere in a year. Accordingly, the winter solstice in the southern hemisphere has the longest day.
"Twenty-four solar terms" said: "On November 15th, the gas storage finally came to an end." . Tong Wei Xiao Jing Ji Shi: "The fifteenth day after the heavy snow is the winter solstice, in mid-November. Yin and Yang began, and the sky went south and grew up. " "Zunxian Manuscript" said: "The day is south, the day is short, and the shadow is long, so it is called the winter solstice. People who' want' are extremely excellent. " It can be seen that our ancients have long known this.
There is no 10 hour from sunrise to sunset in most parts of southern China. From winter to the future, as the earth orbits the sun, the direct sunlight belt gradually moves northward, making the days in the northern hemisphere gradually longer and the nights gradually shorter.
Although the height of the reference sun is the lowest and the sunshine time is the shortest in winter solstice, the heat absorbed by the ground is more than the heat lost. After the winter solstice, it begins to count to nine, and every nine days is a "nine". Before and after "March 9th", the area was the least hot and the weather was the coldest, so it was said that "March 9th was cold".
Astronomy regards the winter solstice as the beginning of winter, which is obviously late for most parts of China. During the winter solstice, the average temperature in the northwest plateau is generally below 0℃, while it is only about 6℃ to 8℃ in the south. In the low-altitude valley areas in the northwest and south, even in the coldest local area of 65438+1early October, the average temperature is still above 10℃, so it can be said that autumn comes and spring comes, and there is no winter all year round.
- Previous article:I comment on my composition.
- Next article:Does EFI vehicle save fuel by sliding with gear or sliding with neutral gear?
- Related articles
- How to judge whether the throttle position sensor and water temperature sensor are damaged by digital multimeter?
- What will poplar buds do in rural areas?
- Great Wall c30 Clean Throttle Guide
- What smell of car perfume can refresh you?
- September of the lunar calendar, Zhuang people's? The first first frost Festival? How to celebrate
- What is the end of your daily life?
- How to make gifts for teachers on Teachers' Day?
- The reason why the average temperature of Lake Ayakumu in summer is lower than that in the same latitude area.
- What is the strongest artillery in the world? Be clear.
- What festival is it to enjoy chrysanthemums and climb mountains?