Oops, it doesn't look like 'letter of intent on early signing day' is a national day..

Other days

embarrass your best friend

Embarrass Your Best Friend Day
promposal

Promposal Day
believe

Believe Day
law

Law Day
cuddle up

Cuddle Up Day
chocolate milkshake

Chocolate Milkshake Day
boy friend

Boy Friend Day
self appreciation

Self Appreciation Day
mean girls

Mean Girls Day
tell ur crush you like them

Tell Ur Crush You Like Them Day