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

Other days

coffee

Coffee Day
unicorn

Unicorn Day
gum

Gum Day
tell a fairytale

Tell A Fairytale Day
my little pony

My Little Pony Day
offer

Offer Day
hoodie

Hoodie Day
singles

Singles Day
lisp

Lisp Day
one

One Day