Leap year

A leap year is a year that has 366 days instead of the usual 365.
The extra day is February 29.

👉 Why do we have leap years?

Earth takes about 365.242 days to orbit the Sun.
To keep our calendar aligned with the seasons, we add one extra day every 4 years.

👉 Leap year rules

A year is a leap year if:
1. Divisible by 4
2. But NOT divisible by 100, unless
3. It is divisible by 400

✔ Examples
• 2020 → Leap year
• 2024 → Leap year
• 2025 → Not a leap year
• 2100 → Not a leap year (divisible by 100 but not 400)
• 2000 → Leap year (divisible by 400)

If you want, I can check whether any specific year is a leap year!