Oops, it doesn't look like 'Best Friend Ls day' is a national day..

Other days

boyfriend

Boyfriend Day
nae nae

Nae Nae Day
one

One Day
polyamory

Polyamory Day
donate your hair

Donate Your Hair Day
self care

Self Care Day
boy friend

Boy Friend Day
ruby

Ruby Day
ride the wind

Ride The Wind Day
self appreciation

Self Appreciation Day