Oops, it doesn't look like 'tequila hangover day' is a national day..

Other days

Donate Your Hair Day

Appreciate Yaself A Lil Extra Day

Pampering Day

Slime Day

Lumpy Rug Day

Kiss A Ginger Day

Aloxolt Day

Blanket Fort Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Ask Out Your Crush Day