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

Other days

book

Book Day
comfy

Comfy Day
ride the wind

Ride The Wind Day
boy friend

Boy Friend Day
aloxolt

Aloxolt Day
martini

Martini Day
hannah

Hannah Day
gum

Gum Day
ask out your crush

Ask Out Your Crush Day
one

One Day