Oops, it doesn't look like 'bit of manky old floorboard day' is a national day..

Other days

Chocolate Milkshake Day

Comfy Day

Mean Girls Day

Slime Day

Cursing Day

Promposal Day

Me Day

Appreciate Yaself A Lil Extra Day

Lost Sock Memorial Day

African Immigrant And Refugee Hiv And Hep Awareness Day