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

Other days

tell ur crush you like them

Tell Ur Crush You Like Them Day
ruby

Ruby Day
kiss a ginger

Kiss A Ginger Day
buddy

Buddy Day
martini

Martini Day
pumpkin

Pumpkin Day
kale

Kale Day
gum

Gum Day
camera

Camera Day
bonang

Bonang Day