Oops, it doesn't look like 'FriendshipGirlfriendSisterAnd Best Friend day' is a national day..

Other days

Unicorn Day

Me Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Pampering Day

Pumpkin Day

Chocolate Milkshake Day

Mean Girls Day

Nail Polish Day

Stud Day

Bubble Bath Day