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

Other days

comfy

Comfy Day
slime

Slime Day
bonang

Bonang Day
get funky

Get Funky Day
ride the wind

Ride The Wind Day
book

Book Day
polyamory

Polyamory Day
camera

Camera Day
cat girl

Cat Girl Day
tulip

Tulip Day