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

Other days

lisp

Lisp Day
offer

Offer Day
tulip

Tulip Day
one

One Day
healing

Healing Day
nae nae

Nae Nae Day
bubble bath

Bubble Bath Day
ride the wind

Ride The Wind Day
bow tie

Bow Tie Day
lumpy rug

Lumpy Rug Day