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

Other days

get funky

Get Funky Day
lash

Lash Day
nae nae

Nae Nae Day
eat what you want

Eat What You Want Day
cursing

Cursing Day
healing

Healing Day
lisp

Lisp Day
cat girl

Cat Girl Day
reading

Reading Day
gum

Gum Day