Oops, it doesn't look like 'send nudes get inside me day' is a national day..

Other days

comfy

Comfy Day
my little pony

My Little Pony Day
cat girl

Cat Girl Day
offer

Offer Day
coffee

Coffee Day
me

Me Day
ponytail

Ponytail Day
slime

Slime Day
gum

Gum Day
law

Law Day