Is the moon round in early winter?

According to Zhihu's inquiry, whether the moon is round or not mainly depends on the fifteenth day of the lunar calendar. On the fifteenth day of the lunar calendar, the moon will present a complete circle. Beginning of winter is not the fifteenth day of the lunar calendar, so the moon in beginning of winter will not be round.

Beginning of winter is the 19th of the 24 solar terms and the beginning of winter. Bucket handle points to the northwest, and the longitude of the sun reaches 225, which intersects with Gregorian calendar165438+1October 7-8 every year. Beginning of winter means that anger begins to close and everything enters a state of recuperation. Its climate has also changed from dry autumn to rainy and cold winter.