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

Other days

my little pony

My Little Pony Day
camera

Camera Day
slime

Slime Day
raise awerness of zeus

Raise Awerness Of Zeus Day
cuddle up

Cuddle Up Day
healing

Healing Day
coffee

Coffee Day
ruby

Ruby Day
buddy

Buddy Day
pampering

Pampering Day