Oops, it doesn't look like 'parks is free this public lands day' is a national day..

Other days

bow tie

Bow Tie Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
slime

Slime Day
nae nae

Nae Nae Day
hannah

Hannah Day
me

Me Day
eat what you want

Eat What You Want Day
azonto is acceptable

Azonto Is Acceptable Day
lisp

Lisp Day
fiancee

Fiancee Day