Siblings Day is a holiday recognized in parts of the United States and Canada on April 10, and as Brothers and Sisters Day on May 31 in Europe. It honours the relationship of siblings of all ages. Unlike Mother's Day and Father's Day, it is not federally recognized in the United States, though the Siblings Day Foundation is working to change this. Since 1998, the governors of 49 states have officially issued proclamations to recognize Siblings Day in their state.
