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

Other days

hoodie

Hoodie Day
fiancee

Fiancee Day
unicorn

Unicorn Day
ruby

Ruby Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
tulip

Tulip Day
one

One Day
youth

Youth Day
kiss a ginger

Kiss A Ginger Day
hannah

Hannah Day