Oops, it doesn't look like 'rip off mask day' is a national day..

Other days

one

One Day
boyfriend

Boyfriend Day
kiss a ginger

Kiss A Ginger Day
lash

Lash Day
girl friend

Girl Friend Day
ride the wind

Ride The Wind Day
my little pony

My Little Pony Day
brow

Brow Day
ruby

Ruby Day
kale

Kale Day