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

Other days

one

One Day
boba

Boba Day
nae nae

Nae Nae Day
lash

Lash Day
gum

Gum Day
ask out your crush

Ask Out Your Crush Day
get funky

Get Funky Day
law

Law Day
embarrass your best friend

Embarrass Your Best Friend Day
unicorn

Unicorn Day