Is the solstice in winter the coldest day? What is the earliest origin?

You may be interested: what time is the winter solstice on 20 19?

Is the solstice in winter the coldest day? number<

Is the solstice in winter the coldest day? What is the earliest origin?

You may be interested: what time is the winter solstice on 20 19?

Is the solstice in winter the coldest day? number

During the winter solstice, the earth is the perihelion and the farthest point of the sun's southward movement. In winter solstice, the height of the sun in the northern hemisphere is the smallest and the daytime is the shortest, but winter solstice is not the coldest day. Because when the direct point of the sun moves to the southern hemisphere, the temperature in the northern hemisphere begins to drop a little, the heat dissipation continues almost unchanged, and the weather will get colder and colder. Therefore, although the solar radiation energy is the lowest in winter solstice, the ground, especially the water body, can store huge energy as a buffer medium, so the temperature change needs an accumulation process.

The cooling in the northern hemisphere is a continuous and slow process. On the solstice of winter, when the sun shines directly on the tropic of Capricorn, the temperature of the earth is still falling. The coldest solar terms in a year are around the slight cold solar terms and the great cold solar terms after half a month.

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What is the earliest origin of the winter solstice?

The ancient traditional festivals of the Chinese nation, big or small, all originated from astronomical phenomena, or from ancestors choosing auspicious days to worship the gods and ancestors of heaven and earth to thank them for their kindness. Most traditional festivals are regarded as the "origin" by the legend of a character in the attached meeting, but in fact, these sayings are far later than the birth of festivals and are constructed by later generations.

In ancient times, there was a saying that "the winter solstice will bring the sun", that is to say, the spirit of the sun began to recover slowly from the winter solstice. As the modern poem says: If winter comes, can spring be far behind? In ancient times, people wandering in other places had to go home for the winter festival at this time, which was called "having a home at the end of the year". The Book of the Later Han Dynasty records: "Before and after the winter solstice, gentlemen lived quietly, and hundreds of officials refused to listen to politics. They chose an auspicious day and then saved trouble." In the folk, people visit each other and give each other food.

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The solstice in winter is also a traditional sacrifice day. It is said that after the Song Dynasty, the winter solstice gradually became a festival to worship ancestors and gods. In the Tang and Song Dynasties, the solstice in winter was the day of ancestor worship. The emperor went to the suburbs to hold a ceremony to worship heaven, and the people had to worship their parents. During the winter solstice in Ming and Qing Dynasties, the emperor held a ceremony to worship heaven, which was called "the winter solstice in the suburbs". During this period, there were folk customs such as ancestor worship and family banquet. Therefore, winter solstice is called "off-year".

As a festival, the winter solstice originated in the Han Dynasty, flourished in the Tang and Song Dynasties, and has continued to this day. The first month of the weekly calendar is November in the summer calendar, so the first month of the Zhou Dynasty is equal to November in the solar calendar today, so there is no difference between New Year greetings and New Year celebrations. It was not until Emperor Wu of the Han Dynasty adopted the summer calendar that the first month was separated from the solstice in winter. It can also be said that the simple "winter solstice festival" began in the Han Dynasty, flourished in the Tang and Song Dynasties, and has existed ever since.