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

Other days

Reading Day

Nae Nae Day

Donate Your Hair Day

Unicorn Day

Carpenters Day

Tell Ur Crush You Like Them Day

Lost Sock Memorial Day

Hiv Awareness Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Stress Awareness Day