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

Other days

kale

Kale Day
boba

Boba Day
hoodie

Hoodie Day
boyfriend

Boyfriend Day
lisp

Lisp Day
tulip

Tulip Day
frozen yogurt

Frozen Yogurt Day
donate your hair

Donate Your Hair Day
pick me

Pick Me Day
brow

Brow Day