Oops, it doesn't look like 'park that day' is a national day..

Other days

buddy

Buddy Day
bow tie

Bow Tie Day
camera

Camera Day
cursing

Cursing Day
gallery

Gallery Day
azonto is acceptable

Azonto Is Acceptable Day
unicorn

Unicorn Day
singles

Singles Day
blanket fort

Blanket Fort Day
bonang

Bonang Day