That varies from case to case. If the child has been abducted to a country with which Denmark cooperates under the Hague Convention, the child must be returned as quickly as possible. In principle, a case on return must be decided within six weeks after the application for return was submitted to the court. If no decision has been made, the court may be requested to give an explanation of the reason why.
Sometimes it may take time because of difficulties finding the alleged abductor and the child, or because the case must be heard by the court. It depends on the court procedure of the individual country how long it takes to conduct a case before the court.