Leap Year Rule

A leap year occurs every four years to keep our calendar aligned with Earth's orbit, which takes approximately 365.24 days around the Sun. Normally, years have 365 days, but to account for the extra 0.24 days each year, we add an extra day—February 29—during leap years. The general rule is: a year is a leap year if it’s divisible by 4. However, if the year is divisible by 100, it’s not a leap year unless it’s also divisible by 400. This correction ensures our calendar remains synchronized with Earth's actual orbit over long periods.