Unlock the secrets of determining a leap year effortlessly. Discover the formula, myths, and historical significance behind calculating leap years for a comprehensive understanding. A normal year has 365 days. A Leap Year has 366 days (the extra day is the 29th of February). Try it here: Because the Earth rotates about... Leap years occur every four years with an added leap day, except for years divisible by 100 but not 400. Learn more about the Leap Year Calendar now.
