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

Other days

lash

Lash Day
singles

Singles Day
cuddle up

Cuddle Up Day
bounce

Bounce Day
bonang

Bonang Day
cat girl

Cat Girl Day
raise awerness of zeus

Raise Awerness Of Zeus Day
stud

Stud Day
coffee

Coffee Day
ruby

Ruby Day