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

Other days

polyamory

Polyamory Day
unicorn

Unicorn Day
my little pony

My Little Pony Day
slime

Slime Day
buddy

Buddy Day
bonang

Bonang Day
self care

Self Care Day
stud

Stud Day
ask out your crush

Ask Out Your Crush Day
cuddle up

Cuddle Up Day