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

Other days

buddy

Buddy Day
nail polish

Nail Polish Day
bonang

Bonang Day
pumpkin

Pumpkin Day
one

One Day
cat girl

Cat Girl Day
kiss a ginger

Kiss A Ginger Day
lisp

Lisp Day
martini

Martini Day
reading

Reading Day