Fathers, father's or fathers' day?

[Hedgehog1977]

Which is it? Fathers' seems correct as it's for all fathers, but most cards I've seen have father's on them. Hoping I'm wrong as this is DH's 1st card and I want to be able to keep it!

Hx

Well, you can make the case for Fathers' if you think of it as the Day of Fathers, but everyone seems to write Father's, so I think we just have to accept that's the way it is: something like Day of my Father. It doesn't seem worth worrying about.