Oops, it doesn't look like 'cheese donut elbow day' is a national day..

Other days

pumpkin

Pumpkin Day
book

Book Day
get funky

Get Funky Day
bonang

Bonang Day
cat girl

Cat Girl Day
ride the wind

Ride The Wind Day
martini

Martini Day
lumpy rug

Lumpy Rug Day
hannah

Hannah Day
one

One Day