Oops, it doesn't look like 'i feel like crap and i need to take a nap day' is a national day..

Other days

Ormille Day

Self Care Day

Ride The Wind Day

Fiancee Day

Boba Day

Pampering Day

Pumpkin Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Blanket Fort Day

Aloxolt Day