Oops, it doesn't look like 'and you can start a day' is a national day..

Other days

tulip

Tulip Day
lisp

Lisp Day
aloxolt

Aloxolt Day
gum

Gum Day
me

Me Day
unicorn

Unicorn Day
donate your hair

Donate Your Hair Day
bow tie

Bow Tie Day
promposal

Promposal Day
brow

Brow Day