Oops, it doesn't look like 'Step In A Puddle And Splash Your Friend day' is a national day..

Other days

Unicorn Day

Camera Day

Lost Sock Memorial Day

Appreciate Yaself A Lil Extra Day

Stress Awareness Day

Buddy Day

Artists Day

Pampering Day

Embarrass Your Best Friend Day

African Immigrant And Refugee Hiv And Hep Awareness Day