Explanation

A leap year occurs every 4 years if the year is divisible by 4.

However, years divisible by 100 are not leap years unless they are also divisible by 400.

• 1896: Divisible by 4 → Leap year
• 1902: Not divisible by 4 → Not a leap year
• 1904: Divisible by 4 → Leap year
• 1908: Divisible by 4 → Leap year