The longest night of the year

According to the Chinese calendar, four seasons in a year can be divided according to astronomy, such as Spring, Summer, Autumn and Winter. In which Dong Chi is the beginning of the gas with the middle of winter. By this definition, its starting point coincides with the solstice point (English: Winter solstice) in the Northern Hemisphere from the perspective of Western science.

According to Western science, it is the beginning of winter in the Northern Hemisphere and the beginning of the southern hemisphere summer, the time when the Sun reaches the lowest point to the south in the sky then start back to the north.

Winter solstice usually starts from December 21-22 of the year, this time in the daytime will be the shortest, and the night will be the longest in a year. In this infographic, please introduce to us the information regarding this interesting event, and the distance of the Sun compared to the Earth during this time.