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

Other days

lash

Lash Day
pampering

Pampering Day
mean girls

Mean Girls Day
boy friend

Boy Friend Day
kiss a ginger

Kiss A Ginger Day
nae nae

Nae Nae Day
slime

Slime Day
youth

Youth Day
frozen yogurt

Frozen Yogurt Day
coffee

Coffee Day