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

Other days

blanket fort

Blanket Fort Day

offer

Offer Day

gum

Gum Day

hoodie

Hoodie Day

healing

Healing Day

donate your hair

Donate Your Hair Day

my little pony

My Little Pony Day

Emoji Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

martini

Martini Day