The technical term for when the children live with one parent more than 30% of the year, which comes out to 110 or more overnights and the other parent less than 30% of the year, or 110 or fewer overnights. If the children live with each parent more than 110 overnights, the technical term is shared custody. Please remember these are technical terms that should be applied only after the parents have decided on what the best overall schedule, or parenting plan, is for of their children. See also physical custody.