Oops, it doesn't look like 'wiz khalifa day' is a national day..

Other days

bounce

Bounce Day
ask out your crush

Ask Out Your Crush Day
nae nae

Nae Nae Day
coffee

Coffee Day
blanket fort

Blanket Fort Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
girl friend

Girl Friend Day
ruby

Ruby Day
hiv awareness

Hiv Awareness Day
lisp

Lisp Day