Leap Year Checker
Check if any year is a leap year and explore leap year patterns. Find next and previous leap years with detailed explanations of the leap year rules.
🔬 Interesting Test Cases
🏆 Famous Leap Years
📅 Upcoming Leap Years
Leap Year Rules (Gregorian Calendar)
- • Rule 1: If divisible by 4, it's usually a leap year
- • Rule 2: If divisible by 100, it's usually NOT a leap year
- • Rule 3: If divisible by 400, it IS a leap year (overrides rule 2)
- • Example: 1900 is NOT a leap year (divisible by 100 but not 400)
- • Example: 2000 IS a leap year (divisible by 400)
- • Purpose: Keeps our calendar aligned with Earth's orbit (365.2425 days)
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