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

Other days

stud

Stud Day
hoodie

Hoodie Day
boy friend

Boy Friend Day
buddy

Buddy Day
ponytail

Ponytail Day
first love

First Love Day
lisp

Lisp Day
cuddle up

Cuddle Up Day
self care

Self Care Day
bow tie

Bow Tie Day