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

Other days

stress awareness

Stress Awareness Day
first love

First Love Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
ride the wind

Ride The Wind Day
bow tie

Bow Tie Day
boyfriend

Boyfriend Day
me

Me Day
law

Law Day
raise awerness of zeus

Raise Awerness Of Zeus Day
donate your hair

Donate Your Hair Day