What does beginning of winter mean?

Beginning of winter: Winter is the end, that is to say, the crops should be harvested after harvest. Winter begins on this day.

Solstice in winter: the sun shadow is the longest. On this day, the northern hemisphere has the shortest half-day and the longest night, and it began to enter the cold weather.

Beginning of spring, Changxia, beginning of autumn and beginning of winter respectively represent the beginning of the four seasons. "Stand" means to start. The Gregorian calendar is generally around February 4th, May 5th, August 7th and165438+1October 7th every year.

Solstice in summer and Solstice in winter-this means that summer and winter have arrived. "To" means to arrive. Summer solstice and winter solstice are generally on June 2 1 day and February 22 12 of the Gregorian calendar every year.

In ancient times, solar terms were called "qi", and there were two qi in each month: the former was called "solar terms" and the latter was called "neutral qi". The monthly distribution of the 24 solar terms is shown in the following table, which is closely related to the arrangement of the lunar leap month. In the lunar calendar, beginning of spring is the first of the 24 solar terms. The names of the 24 solar terms are named according to the place pointed by Dougang and the natural climate and landscape at that time. The so-called fighting means that the three stars of the Big Dipper, Kuixing, Xingxing and Yuxing, point to different directions and positions with the movement of celestial bodies, and the positions they refer to are the months they represent. For example, the first month is cloudy, the spoon refers to yin at dusk, refers to yin at midnight, and refers to yin during the day; February is the base, the Beidou at dusk refers to the base, the balance at midnight refers to the base, the chief refers to the base during the day, and so on.