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

Other days

bow tie

Bow Tie Day
boy friend

Boy Friend Day
ruby

Ruby Day
lisp

Lisp Day
brow

Brow Day
tulip

Tulip Day
latina equal pay

Latina Equal Pay Day
stud

Stud Day
coffee

Coffee Day
boba

Boba Day