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

Other days

hoodie

Hoodie Day
healing

Healing Day
boy friend

Boy Friend Day
get funky

Get Funky Day
book

Book Day
buddy

Buddy Day
polyamory

Polyamory Day
kiss a ginger

Kiss A Ginger Day
lash

Lash Day
bow tie

Bow Tie Day