Oops, it doesn't look like 'friend or bestie day' is a national day..

Other days

ormille

Ormille Day
boy friend

Boy Friend Day
kiss a ginger

Kiss A Ginger Day
coffee

Coffee Day
cat girl

Cat Girl Day
law

Law Day
kale

Kale Day
prosecco

Prosecco Day
bow tie

Bow Tie Day
offer

Offer Day