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

Other days

tell a fairytale

Tell A Fairytale Day
stud

Stud Day
singles

Singles Day
slime

Slime Day
self appreciation

Self Appreciation Day
ponytail

Ponytail Day
self care

Self Care Day
me

Me Day
polyamory

Polyamory Day
lisp

Lisp Day