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

Other days

coffee

Coffee Day
bounce

Bounce Day
ponytail

Ponytail Day
cuddle up

Cuddle Up Day
self appreciation

Self Appreciation Day
hoodie

Hoodie Day
ormille

Ormille Day
gum

Gum Day
stud

Stud Day
ask out your crush

Ask Out Your Crush Day