Oops, it doesn't look like 'niall horan made a snapchat day' is a national day..

Other days

raise awerness of zeus

Raise Awerness Of Zeus Day
ormille

Ormille Day
brow

Brow Day
boy friend

Boy Friend Day
self appreciation

Self Appreciation Day
chocolate milkshake

Chocolate Milkshake Day
ruby

Ruby Day
lisp

Lisp Day
ask out your crush

Ask Out Your Crush Day
me

Me Day