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

Other days

one

One Day
law

Law Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
unicorn

Unicorn Day
boyfriend

Boyfriend Day
gum

Gum Day
pick me

Pick Me Day
ruby

Ruby Day
artists

Artists Day
martini

Martini Day