Determinate
For a specified period; the YCJA and the YOA have determinate custodial dispositions, while the JDA allowed for indeterminate committal to training school. However, under the Juvenile Delinquents Act the committal to custody terminated sometime before or when the young person reached the age of twenty-one.
Source

Title: Youth Criminal Justice Law, 3/e
By: Nicholas Bala and Sanjeev Anand