20 18 when is the winter solstice? Introduction.

The winter solstice of 1 and 20 18 is February 22nd, 20 18.

2. Winter solstice, also known as short day, winter festival, sub-year-old, winter worship, etc. It has both natural and humanistic connotations. It is not only an important solar term among the 24 solar terms, but also a traditional folk festival in China. The solstice in winter is one of the eight festivals in four seasons, and it is considered as a big holiday in winter. There is an ancient saying that the solstice in winter is as big as a year, so the ancients called it "off-year" or "off-year". The custom of winter solstice varies in content or details due to different regions. In some areas along the southern coast of China, there is a custom of offering sacrifices to ancestors during the winter solstice; In northern China, it is a custom to eat jiaozi from winter to Sunday every year.

3. The winter solstice is the 22nd solar term in the "twenty-four solar terms", and the solar calendar reaches 270. Every year, festivals are held in Gregorian calendar 65438+February 2 1~23. The winter solstice marks the minimum height of the sun and the shortest day in the northern hemisphere, but the temperature in winter solstice is not the lowest. On the solstice of winter, the sun shines directly on the ground and reaches the southernmost tip of the year. The sun is almost directly on the tropic of Capricorn, and the sun is most inclined to the northern hemisphere.

4. In all parts of the northern hemisphere, the winter solstice has the shortest day and the longest night, and the farther north, the shorter the day. After the winter solstice, the direct point of the sun gradually moved northward, and the days in the northern hemisphere began to get longer. Therefore, the ancients believed that winter was the weakest day of the year, and then the yang gradually recovered. From the solstice of winter, people began to count to nine to calculate the cold weather. As the folk proverb says, "The solstice in summer is the third watch, and the solstice in winter is the ninth watch."