Oops, it doesn't look like 'give ur friend her leggins back day' is a national day..

Other days

Kale Day

My Little Pony Day

Gum Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Kiss A Ginger Day

Tulip Day

Singles Day

Chocolate Milkshake Day

Embarrass Your Best Friend Day

Prosecco Day