Why do we need leap years?


Why do we need leap years? 
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  4. Why do we need leap years?

Since it takes Earth roughly three hundred and sixty-six days to orbit the sun, an additional day's value of your time accumulates every four years. in an exceedingly bissextile year, Gregorian calendar month receives an additional day to atone for the distinction between the tropical year and therefore the twelvemonth.

If no changes were created, the calendar and therefore the seasons would estrange by twenty-four days each one hundred years. The arrangement of adding each day every four years was devised by the Egyptians. The Romans created a typical day, bissextile day, in 46 b.c.

Adding in some unspecified time in the future per four years did not absolutely correct the matter, however, owing to Earth orbits in eleven minutes and fourteen seconds but three hundred and sixty-six days. A correction, established in 1582, adds a day solely to century years partible by four hundred. so 2000 was a bissextile year, but 2100, 2200, and 2300 won't be.


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