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

Other days

china

China Day
brow

Brow Day
kiss a brunette

Kiss A Brunette Day
reading

Reading Day
gum

Gum Day
nae nae

Nae Nae Day
kiss a ginger

Kiss A Ginger Day
hoodie

Hoodie Day
ponytail

Ponytail Day
comfy

Comfy Day