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

Other days

boyfriend

Boyfriend Day
promposal

Promposal Day
bow tie

Bow Tie Day
self appreciation

Self Appreciation Day
blanket fort

Blanket Fort Day
boy friend

Boy Friend Day
cuddle up

Cuddle Up Day
stud

Stud Day
youth

Youth Day
unicorn

Unicorn Day