If a child is not released to the care of his parents, the court shall set and hold a hearing within three days after the child’s entry into the juvenile detention center or shelter care facility. The three-day period includes any day that is included as a legal holiday under Children’s Code Article 114. When the last day of the three-day period is a legal holiday, the hearing shall be set and held on the next business day that is not a legal holiday. If the hearing is not held, the child shall be released unless the hearing is continued at the request of the child.