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

Other days

first love

First Love Day
promposal

Promposal Day
pampering

Pampering Day
offer

Offer Day
gum

Gum Day
kale

Kale Day
kiss a brunette

Kiss A Brunette Day
bubble bath

Bubble Bath Day
lash

Lash Day
self care

Self Care Day