Gregorian Calendar Skipped Years. It indicated 97 leap years out of 400 to solve the problem that the solar year actually lasts 365.2425 days, which means that after four years, the calendar would be off one day without the leap years. The gregorian calendar is more accurate than the julian calendar because it occasionally skips a leap year to keep the calendar in alignment with the earth's orbit of.
One of the most pressing problems caused by the error was the increasing difficulty of calculating the date of easter , which the council of nicaea in 325 had decreed should fall on the. It was first used in 1582, as an evolution of what already existed,.