Oops, it doesn't look like 'park via day' is a national day..

Other days

youth

Youth Day
hoodie

Hoodie Day
stress awareness

Stress Awareness Day
latina equal pay

Latina Equal Pay Day
nae nae

Nae Nae Day
first love

First Love Day
boba

Boba Day
ponytail

Ponytail Day
gum

Gum Day
ride the wind

Ride The Wind Day