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

Other days

stress awareness

Stress Awareness Day
boba

Boba Day
ruby

Ruby Day
lost sock memorial

Lost Sock Memorial Day
boyfriend

Boyfriend Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
comfy

Comfy Day
kiss a brunette

Kiss A Brunette Day
eat what you want

Eat What You Want Day
raise awerness of zeus

Raise Awerness Of Zeus Day