On Wed Apr 1, 2026 at 10:54 PM CEST, Fred wrote:
> If your year is divisible by 400 it is a leap despite the fact that 
> years divisible by 100 are not.  It is to stop the seasons drifting.
>
> https://www.wolframalpha.com/input?i=leap+year

Yes, but the current code requires that the number is NOT allowed to be
divisible by 100. And every number divisible by 400 is also divisible
by 100, since 400 mod 100 = 0.