Once every 30 years, once every 30 years.

Q: The winter moon of the lunar calendar appears every 30 years?

A: I will be absent every four years on the 30th day of the lunar winter month. 2

Once every 30 years, once every 30 years.

Q: The winter moon of the lunar calendar appears every 30 years?

A: I will be absent every four years on the 30th day of the lunar winter month. 20 17 The 30th day of the lunar winter month is the 30th day of the 20th1816,1kloc-0/month, the 30th day of the lunar calendar.

Winter moon refers to winter. Winter is the coldest season of the year, and the others are spring, summer and autumn. Astronomically speaking, it is 65438+February to February. China used to refer to the three months from beginning of winter to beginning of spring, as well as October, November and December of the lunar calendar.

November of the lunar calendar is the "winter moon". If December of a year is represented by twelve earthly branches, it is also called "Zi Yue" and "Jian Zi".

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According to the book "Closed Sutra", "The Yellow Emperor's strategy of getting a treasure tripod is to be old, win the winter solstice, win the discipline of heaven and earth, and start all over again." In other words, the winter solstice was regarded as New Year's Day (New Year's Day) during the Yellow Emperor's period, not only after the Zhou Dynasty ("Ji Jia") and "Jian Zichun", but also the saying that the winter solstice was annual ("New Year's Day") has a long history. Later, the origin of the winter solstice turned out to be because the winter solstice happened once a year. The custom of the winter solstice was originally a remnant of the annual custom of the Zhou Dynasty. However, with the passage of time and the change of calendar, the Winter Solstice Festival has been gradually forgotten.