Leap years occur after how many years:

🧠 Explanation:

Leap years occur every four years, adding an extra day, February 29, to keep the calendar aligned with the Earth’s 365.25-day orbit around the Sun. This adjustment ensures seasonal consistency over time. The rule, part of the Gregorian calendar, skips leap years in century years not divisible by 400. Leap years are critical for accurate timekeeping in astronomy, agriculture, and scheduling. Understanding their cycle is essential in calendar systems, impacting planning in fields like science, education, and event management, ensuring precision in long-term timelines.