Oops, it doesn't look like 'triple drop day' is a national day..

Other days

lumpy rug

Lumpy Rug Day
youth

Youth Day
nae nae

Nae Nae Day
frozen yogurt

Frozen Yogurt Day
ride the wind

Ride The Wind Day
healing

Healing Day
martini

Martini Day
stud

Stud Day
camera

Camera Day
brow

Brow Day