Why does the Gregorian calendar use leap years?
A)because the tropical year is 365 days, 5 hours, adn 49 minutes long
B)because the sidereal year is 365 days, 6 hours, and 9 minutes long
C)becasue the Earth's axis is precessing
D)because the Earth's rotation is slowing down

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The Answer of Why does the Gregorian calendar use leap years?
A)because the tropical year is 365 days, 5 hours, adn 49 minutes long
B)because the sidereal year is 365 days, 6 hours, and 9 minutes long
C)becasue the Earth's axis is precessing
D)because the Earth's rotation is slowing down

Why Does the Gregorian Calendar Use Leap Years