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

Other days

fiancee

Fiancee Day
comfy

Comfy Day
tulip

Tulip Day
lumpy rug

Lumpy Rug Day
stud

Stud Day
frozen yogurt

Frozen Yogurt Day
kiss a ginger

Kiss A Ginger Day
ormille

Ormille Day
hannah

Hannah Day
gum

Gum Day