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

Other days

aloxolt

Aloxolt Day
law

Law Day
ruby

Ruby Day
boy friend

Boy Friend Day
slime

Slime Day
first love

First Love Day
carpenters

Carpenters Day
girl friend

Girl Friend Day
my little pony

My Little Pony Day
gum

Gum Day