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

Other days

bounce

Bounce Day
lumpy rug

Lumpy Rug Day
book

Book Day
unicorn

Unicorn Day
law

Law Day
china

China Day
tell a fairytale

Tell A Fairytale Day
one

One Day
blanket fort

Blanket Fort Day
nae nae

Nae Nae Day