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

Other days

fiancee

Fiancee Day
martini

Martini Day
cat girl

Cat Girl Day
nae nae

Nae Nae Day
first love

First Love Day
slime

Slime Day
lisp

Lisp Day
raise awerness of zeus

Raise Awerness Of Zeus Day
law

Law Day
china

China Day