Oops, it doesn't look like 'Thigh Socks And High Waisted Skirt day' is a national day..

Other days

Promposal Day

Chocolate Milkshake Day

My Little Pony Day

Cat Girl Day

Bow Tie Day

Appreciate Yaself A Lil Extra Day

Aloxolt Day

Tulip Day

Book Day

Prescription Drug Take Back Day