Lunar date: the first day of the moon in winter (small)

Start time: 65438+February 2 1, 2020 18:02.

End time: 20211511:23.

On the day of winter solstice, the longitude of the sun is 270, and the sun shines almost directly on the tropic of Capricorn. Our northern hemisphere has the shortest days and the longest nights, and it has begun to enter several cold days. Astronomy stipulates that this day is the beginning of winter in the northern hemisphere. From winter to the future, the direct sunlight position gradually moves northward, and the daytime in the northern hemisphere gradually becomes longer.

Winter solstice is the most important solar term in health preservation, mainly because "winter solstice is born by the sun". According to the gossip theory, this time it is a complicated divination of mines. In the hexagrams, the top five are Yin and the bottom one is Yang, which symbolizes the birth of Yang. In ancient China, the winter solstice was designated as the second month, that is, the beginning of a year. Twelve o'clock a day, the child is also the time when the human body is born.

Ancient health care attached great importance to the birth of Yang. People think that when Yang is born, it should be carefully protected and nursed back to health, just like farmers' seedling raising and women's pregnancy, so as to make it grow sturdily. Because only when the yang in the human body is sufficient will the purpose of getting rid of diseases and prolonging life be achieved. Therefore, Zi Shi and Zi Yue play an important role in health preservation.