We used to call it the Mid-Autumn Festival, which means second, but now we call it the "Mid-Autumn Festival". Mid-Autumn Festival in the first month and the third month in the month of Mengyu, Zhong and Quarter respectively.
Began as a ritual in the spring and fall, it later became a festival of sacrifice. And on nights without WiFi and friends, the ancients had no time to look at the moon, think about life, and look for the rules of the stars in the sky. In that bright moon, light is strongest and brightest when it changes from a pointed face to a large round face.
How bright was this light in times when there were no lights, and what animals seemed to be affected by it. The worship of the Moon was called an offering to the Moon, and in fact many sacrifices were offered to the Moon God, later hoping for a gradual blessing and thanking everyone during the period of development. Appreciation of the Moon was an aesthetic action. The Mid-Autumn Festival is sacred, that's why the moon is so sturdy and bright. In reality, it is not a 15-day Mid-Autumn Festival, but a day when the ancients darkened the moon and began the cycle to another. The famous lunar calendar is the same as the Hebrew, except for the lunar calendar. Why do you define the Jewish and Islamic calendars in this way? Convenient observation! It is not clear whether this reason should be accepted or not observed.
The phases of the moon are a cycle, so that the first is adjacent to the last, one crescent is on the left and one on the right. Since it is difficult to know which month is the 15th, the first day is determined first, usually the 15th month, so the Mid-Autumn Festival is set for August 15th. Overall, because of the changing law of the moon, the ancients decided to set a festival on a day when the moon could be clearly observed, because then the moon could be clearly seen to fulfill people's wishes.