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

Other days

mean girls

Mean Girls Day
frozen yogurt

Frozen Yogurt Day
blanket fort

Blanket Fort Day
stud

Stud Day
singles

Singles Day
latina equal pay

Latina Equal Pay Day
slime

Slime Day
buddy

Buddy Day
healing

Healing Day
ruby

Ruby Day