Why does the Year of the Rat have 384 days? What does this mean? As far as we know, there are only 365 days in a year or 366 days in a leap year, and suddenly there are 384 days in the year of the rat. What's going on here? It turns out that the year of the rat here is the lunar year of the rat, not the Gregorian year. As for why there are 384 days in the Year of the Rat in China, please see the introduction I brought below.

Why does the Year of the Rat have 384 days? What do you mean by 384 days in the Year of the Rat?

There are 384 days in the Year of the Rat of Gengzi in the lunar calendar, because there are double leap years, and the Year of the Rat of Gengzi leaps in April, which is 13 months, with 384 days in a year.

There are 29 days in February in the solar calendar as leap years in the solar calendar, and one month in the lunar calendar as leap years in the lunar calendar. Once these two "leap years" coincide, they can be called "double leap years".

What is a leap year in Gregorian calendar?

The emergence of leap years in the solar calendar is easy to understand: the earth's revolution around the sun is 365.5306 days, which is a tropic year. A normal year in the solar calendar is only 365 days, which is about 0.2422 days shorter than the tropic year, and it accumulates about one day every four years. So this day is added to the end of February, making the number of days in that year 366, and this year is a leap year.

What is a leap year in the lunar calendar?

The lunar calendar in China is a combination of yin and yang, which is formulated in combination with the cycle of the sun and the moon. The normal year of the lunar calendar is 12 lunar month, about 355 days, and the Spring Festival is fixed on the first day of the first lunar month every year. In this way, the normal lunar year is shorter than the Gregorian year by 10 days to 1 1 day. In order to balance the "time difference" between the lunar calendar and the solar calendar, the traditional calendar has set the rule of "seven leaps in nineteen years" by adding leap months. Every two to three years, 1 month must be added, and the added month is called leap month, which is matched with the Gregorian calendar year by the average method.

There will be a leap in April of the coming Year of the Rat, which is 13 months, with 384 days in a year.

In what year does the double leap year occur?

Usually once every four years.

First of all, the leap year is based on the regression period of the direct point of the sun. Generally, the regression period of direct sunlight is 5: 48: 46 in 365 days. For convenience, we usually take 365 days as a year, so it will be 5: 48: 46 more than normal years. When we accumulate four years, it is about a leap day, that is, February 29th. In addition, the lunar calendar will be one month longer than usual. Therefore, double leap years usually occur only once every four years.

How did the "Double beginning of spring" of Gengzi Rat come from?

Because there is a Gregorian calendar year between two cities in beginning of spring, and a lunar year with leap months has 13 months, which is very long. In the first month, there was beginning of spring, and before the next New Year's Eve, it was beginning of spring. This is the "Double beginning of spring". Wang Yumin explained that according to the method of "seven leap years in nineteen years", 19 every seven leap years, there will be seven "two beginning of spring days" in the first month and the twelfth month, and the "two beginning of spring days" will "occupy" beginning of spring in the previous year or the following year, and there will be seven "beginning of spring-free years" accordingly. This is caused by the calendar arrangement, and there is no mysterious collateral in it.

Knowledge expansion:

The establishment of leap year is to make up for the time difference between the number of days in a year and the actual period of revolution of the earth caused by man-made calendar regulations. The year to make up for the time difference is leap year. The leap year has 366 days (February 1- 1 day, 29 days, 3 1 day, 30 days, 3 1 day, 3 1 day.

Ordinary year: a year divisible by 4 but not by 100 is an ordinary leap year. (For example, 2004 is a leap year, 1999 is not. )

Century year: the leap year of the century can be divisible by 400. (For example, 2000 is a leap year, 1900 is not. )

Calculation of leap month in lunar leap year, three-year leap, five-year leap, 19 leap; The lunar calendar basically takes 19 as a cycle, corresponding to the same time in the Gregorian calendar. For example, in the Gregorian calendar, May 27th, 2006, 5438+0, May 27th 1982 and May 27th 1963 are the fifth day of leap April.