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

Other days

first love

First Love Day
boy friend

Boy Friend Day
bubble bath

Bubble Bath Day
pick me

Pick Me Day
camera

Camera Day
slime

Slime Day
bow tie

Bow Tie Day
comfy

Comfy Day
cuddle up

Cuddle Up Day
lash

Lash Day