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

Other days

youth

Youth Day
ponytail

Ponytail Day
self care

Self Care Day
bow tie

Bow Tie Day
martini

Martini Day
me

Me Day
eat what you want

Eat What You Want Day
book

Book Day
blanket fort

Blanket Fort Day
first love

First Love Day