Oops, it doesn't look like 'parks will offer free admission on public lands day' is a national day..

Other days

prescription drug take back

Prescription Drug Take Back Day
hiv awareness

Hiv Awareness Day
bow tie

Bow Tie Day
me

Me Day
aloxolt

Aloxolt Day
get funky

Get Funky Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
stress awareness

Stress Awareness Day
pampering

Pampering Day
boy friend

Boy Friend Day