Oops, it doesn't look like 'No Whataburger day' is a national day..

Other days

lash

Lash Day
lisp

Lisp Day
ask out your crush

Ask Out Your Crush Day
unicorn

Unicorn Day
kale

Kale Day
my little pony

My Little Pony Day
law

Law Day
youth

Youth Day
bonang

Bonang Day
hannah

Hannah Day