How many days are there in 4 centuries?

Answer 1

In the Gregorian Calendar: For a first approximation, one in every four years has an extra day (Feb. 29), so you have 365.25 x 400 = 146,100. Now, 3 of the 4 years at the end of each century do not have this extra day, so you subtract 3 - therefore, the 4 centuries have exactly 146,097 days.