All about Sister's Day or Siblings Day Siblings Day (sometimes called National Siblings Day or National Sibling Day) is a holiday recognized annually in some parts of the United States on April 10, honoring the relationships of siblings. Whether it is in the closest of bonds or the farthest of distance between us, our family is some of the closest ties many of us have outside of marriage and children. This day is to celebrate one of those very bonds, one that has sparked many stories, movies and songs; the bond of sisterhood. So here is to you, all the sisters out there that cared for us, helped us and even helped shape us into who we are today – Sister’s Day! All about Sister's Day History of Sister’s Day The history of sisters is something to view back as far as time goes back. A sister was one that you confided in, asked question to the older ones, guided the younger ones, and were there to help them either way during the bad t...