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

Other days

nae nae

Nae Nae Day
first love

First Love Day
believe

Believe Day
buddy

Buddy Day
kiss a ginger

Kiss A Ginger Day
ruby

Ruby Day
ormille

Ormille Day
latina equal pay

Latina Equal Pay Day
pumpkin

Pumpkin Day
polyamory

Polyamory Day