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Is This A Leap Year 2025. To use it as a leap year checker, simply type in the year of interest, say 2024, and press calculate. The leap year calculator allows you to check if the given year is a leap year and find all the leap years in a given range.

A leap year has 366 days (the extra day is the 29th of february). While a standard year has 365 days, a leap year boasts 366 days, ensuring that the calendar.