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

Other days

brow

Brow Day
comfy

Comfy Day
blanket fort

Blanket Fort Day
boy friend

Boy Friend Day
girl friend

Girl Friend Day
prosecco

Prosecco Day
promposal

Promposal Day
tulip

Tulip Day
ponytail

Ponytail Day
stud

Stud Day