What's the problem in this code?

Question

Why it isn't working? What to do? Please help.

https://code.sololearn.com/cVpeiv2gtTG6/?ref=app

Answer 1

Use if statement instead of while

Answer 2

For my birthday it is invalid. For example my birthdate is in A, C, G, I ect. at the same time. Maybe there is something to change.

Answer 3

Simba It still ain't working.

Answer 4

U only check some cases.
For 19. January it works.

Answer 5

But what should I do?