Oops, it doesn't look like 'sprint car race day' is a national day..

Other days

hannah

Hannah Day
first love

First Love Day
bounce

Bounce Day
one

One Day
artists

Artists Day
pumpkin

Pumpkin Day
brow

Brow Day
nae nae

Nae Nae Day
latina equal pay

Latina Equal Pay Day
ride the wind

Ride The Wind Day