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

Other days

self care

Self Care Day
bow tie

Bow Tie Day
nae nae

Nae Nae Day
reading

Reading Day
bounce

Bounce Day
singles

Singles Day
promposal

Promposal Day
aloxolt

Aloxolt Day
prosecco

Prosecco Day
one

One Day