How many days does February have in a leap year?

February has 29 days in a leap year due to the addition of an extra day to accommodate the discrepancy between the calendar year and the solar year. A leap year occurs every four years to help synchronize the calendar with the Earth's revolutions around the Sun. In a typical year, February has 28 days, but during a leap year, an extra day is added to ensure that important dates remain consistent within the seasons and astronomical events. This adjustment helps maintain accuracy in our calendar system and is essential for both civil and scientific purposes.