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

Other days

lash

Lash Day
healing

Healing Day
boy friend

Boy Friend Day
cuddle up

Cuddle Up Day
gum

Gum Day
slime

Slime Day
bubble bath

Bubble Bath Day
martini

Martini Day
aloxolt

Aloxolt Day
blanket fort

Blanket Fort Day