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

Other days

bow tie

Bow Tie Day
believe

Believe Day
hannah

Hannah Day
prosecco

Prosecco Day
lisp

Lisp Day
first love

First Love Day
eat what you want

Eat What You Want Day
boyfriend

Boyfriend Day
boba

Boba Day
singles

Singles Day