Oops, it doesn't look like 'katt day' is a national day..

Other days

ruby

Ruby Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
buddy

Buddy Day
hoodie

Hoodie Day
slime

Slime Day
bow tie

Bow Tie Day
youth

Youth Day
gallery

Gallery Day
polyamory

Polyamory Day
hannah

Hannah Day