Oops, it doesn't look like 'parks with a special collection for earth day' is a national day..

Other days

Boyfriend Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Tell Ur Crush You Like Them Day

Embarrass Your Best Friend Day

Bounce Day

Eat What You Want Day

Get Funky Day

Emoji Day

Kiss A Brunette Day

Cursing Day