Why is April a leap year in 2021?
In 2021, there is a leap April every month, this A year is an ordinary year, not a leap year.The ordinary year refers to the lunar year without leap months and the Gregorian calendar year without leap days.This year is also the year of Xin Chou.Ox people will be Tai Sui in this year and need to prevent disasters in the year of birth.
Meaning of leap year
1, Gregorian leap year
The orbit of the earth around the sun is 365 days, 5 hours, 48 minutes and 46 seconds (365.24219 days), which is a tropical year.The average year of the Gregorian calendar has only 365 days, which is about 0.2422 days shorter than the return year.It accumulates about one day every four years.This day is added to the end of February (that is, February 29), so that the length of the current year becomes 366 days (1~12 The month is 31 days, 29 days, 31 days, 30 days, 31 days, 30 days, 31 days, 31 days, 30 days, 31 days, 30 days, 31 days), this year is a leap year.
2.Lunar leap year
China’s old calendar - the lunar calendar is a lunisolar calendar, the number of days in a month is determined by the monthly loss, and the time of a year is based on 12 months , the average year is about 11 days shorter than the return year.In order to close the cycle of the earth revolving around the sun (that is, the return year), every 2 to 4 years, one month is added, and the added month is an intercalary month.Which month the intercalary month is added to is inferred from the rules of the lunar calendar, and is mainly determined according to the coincidence with the twenty-four solar terms of the lunar calendar.In a year with a leap month, there are 13 months, and the length of the calendar year is 383 to 385 days.This year is also called a leap year.For example, in the lunar calendar of 1984 (the Year of the Rat), there are two Octobers, which are usually called October and Leap October (ie, Leap Month).
Meaning of a normal year
A year without a leap day in the Gregorian calendar, or a year without a leap month in the lunar calendar, is called a normal year.Divide a year that is not a whole hundred by 4, or divide a year that is a hundred by 400.If it is not divisible, it is a normal year.There are only 28 days in February in a normal year.The normal year of the solar calendar is 365 days, the normal year of the lunar calendar is generally 354 days or 355 days, and very few are 353 days.Between AD 1 and AD 5000, there are 353 days in a lunar year, only these are:780, 1620, 1965, 2372, 3620, 3903, 3965, 4186, 4248.
Whether 2021 is a normal year or a leap year
2021 is the year of peace and the year of the ox.There are many malevolent stars, whether it is "Tai Sui", "Jianfeng", "Burrowing Corpse" and "Yellow Banner", all of them will bring terrible things.Fortunately, there is also the help of "year-old driving", which can play a role in relieving a little, but it can’t have too much expectations.In the year of Tai Sui, the Ox should be able to clearly recognize the predicament they are in, actively seek countermeasures, and not be intimidated by difficulties.At the same time, it is necessary to deal with people-to-people relationships well.Only when there are many close friends can we get outside help when we are in trouble.Ox people may be a little sloppy and don’t know how to be flexible.This must be constantly corrected in 2021, otherwise it will cause a lot of trouble.
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