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

Other days

coffee

Coffee Day
boy friend

Boy Friend Day
singles

Singles Day
gum

Gum Day
hiv awareness

Hiv Awareness Day
kiss a brunette

Kiss A Brunette Day
stress awareness

Stress Awareness Day
slime

Slime Day
camera

Camera Day
blanket fort

Blanket Fort Day