Oops, it doesn't look like 'park will be open memorial day' is a national day..

Other days

kale

Kale Day
blanket fort

Blanket Fort Day
frozen yogurt

Frozen Yogurt Day
cursing

Cursing Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
hiv awareness

Hiv Awareness Day
stress awareness

Stress Awareness Day
hannah

Hannah Day
ask out your crush

Ask Out Your Crush Day
gum

Gum Day