What is leap year: Leap years occur every

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. Why will 2025 be a leap year ? List of leap years from 1900 to 3000. Leap years have 366 days and a February 29. They take place, except in special cases every 4 years . Leap years are a way to ensure that our calendar is on track. There are roughly 365.24 days in a year , which means that we need to add 1 extra day once every 4 years , and a year with 1 extra day is known as a leap year . We need to do this... A leap year is a calendar year with an extra day or month to keep it aligned with the seasons or astronomical events. Learn about the origin and evolution of the Julian and Gregorian calendars, and how they determine which years are leap years.