Oops, it doesn't look like 'jose canseco let a homer bounce off his head day' is a national day..

Other days

Appreciate Yaself A Lil Extra Day

Reading Day

Gum Day

Believe Day

First Love Day

Blanket Fort Day

Mean Girls Day

Stress Awareness Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Aloxolt Day