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

Other days

bubble bath

Bubble Bath Day
coffee

Coffee Day
eat what you want

Eat What You Want Day
girl friend

Girl Friend Day
nae nae

Nae Nae Day
hoodie

Hoodie Day
lisp

Lisp Day
prosecco

Prosecco Day
stud

Stud Day
gum

Gum Day