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

Other days

boyfriend

Boyfriend Day
mean girls

Mean Girls Day
first love

First Love Day
cursing

Cursing Day
self care

Self Care Day
self appreciation

Self Appreciation Day
slime

Slime Day
kiss a ginger

Kiss A Ginger Day
hoodie

Hoodie Day
ormille

Ormille Day