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

Other days

brow

Brow Day
kale

Kale Day
one

One Day
first love

First Love Day
cat girl

Cat Girl Day
bounce

Bounce Day
kiss a ginger

Kiss A Ginger Day
bubble bath

Bubble Bath Day
lash

Lash Day
artists

Artists Day