How many days is 202 1?

The lunar calendar is based on the law of the moon's ebb and flow, so there are 29.53 days in a month and 12 months in a year, so there are 354 days in the lunar calendar.

There are 354 days in the Year of the Ox, which is not to say that there are really few days, but the calculation method is different. If only calculated according to the lunar calendar, it is difficult to correspond to the law of the sun's operation, which is not conducive to guiding agricultural production. So in the calendar, a leap month will be added to it in a few years, so we will see that in the lunar year, the minimum is 354 days, the maximum is 384 days, and 202 1 is only 354 days.

introduce

The Year of the Ox staggered beginning of spring twice perfectly and became a lunar year without beginning of spring, so there are only 23 solar terms among the 24 solar terms.

There is a folk saying that the two years in beginning of spring are called "February Spring", which is a so-called "good year", while some years are called "deaf year" or "dumb year", which means ominous. In fact, this statement is groundless. This change is only the result of the lunar calendar's efforts to reconcile the phase change of the moon with period of revolution, and it is purely a coincidence of normal mathematical arrangements.