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

Other days

my little pony

My Little Pony Day
ruby

Ruby Day
youth

Youth Day
hot chocolate

Hot Chocolate Day
kiss a ginger

Kiss A Ginger Day
hoodie

Hoodie Day
self care

Self Care Day
stud

Stud Day
cuddle up

Cuddle Up Day
promposal

Promposal Day