3 ms·
1. Leap year every 4 years (+1/4) 2. But not if it's divisible by 100 (-1/100) 3. Unless it's divisible by 400 (+1/400)
by messe 5y ago
1. Leap year every 4 years (+1/4)
2. But not if it's divisible by 100 (-1/100)
3. Unless it's divisible by 400 (+1/400)