How to judge the leap year of the Gregorian calendar by calculation How to judge the leap year of the Gregorian calendar by calculation? It is said that 2000 is a leap year and 1900 is not. Why? The method of distinguishing leap year from normal year is as follows The number of years is the whole hundred, the whole thousand, to see whether it can be divided by 400, can be divided by 400 for leap year, can not be divided by 400 for ordinary year; The number of years is not an integral hundred, to see whether it can be divided by 4, the leap year can be divided by 4, and the ordinary year can not be divided by 4.

How to judge the leap year of the Gregorian calendar by calculation How to judge the leap year of the Gregorian calendar by calculation? It is said that 2000 is a leap year and 1900 is not. Why? The method of distinguishing leap year from normal year is as follows The number of years is the whole hundred, the whole thousand, to see whether it can be divided by 400, can be divided by 400 for leap year, can not be divided by 400 for ordinary year; The number of years is not an integral hundred, to see whether it can be divided by 4, the leap year can be divided by 4, and the ordinary year can not be divided by 4.

So 2000 is a leap year because it can divide 400, while 1900 and 2100 can't, so it's not a leap year. Obviously, we are very lucky to meet 2000, which is a whole hundred leap year

How to judge leap year?

① An ordinary year is a leap year, which can be divided by 4 but not 100
② A leap year is a century year that can be divided by 400 but not 3200
③ It is a leap year to divide 3200 and 172800 for a year with large number