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

Other days

me

Me Day
nail polish

Nail Polish Day
eat what you want

Eat What You Want Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
chocolate milkshake

Chocolate Milkshake Day
self care

Self Care Day
unicorn

Unicorn Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
donate your hair

Donate Your Hair Day
frozen yogurt

Frozen Yogurt Day