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

Other days

girl friend

Girl Friend Day
healing

Healing Day
lisp

Lisp Day
ruby

Ruby Day
stud

Stud Day
boba

Boba Day
prosecco

Prosecco Day
latina equal pay

Latina Equal Pay Day
cat girl

Cat Girl Day
boy friend

Boy Friend Day