Ala. Code § 12-21-240: Attendance of Witnesses - Generally.

Witnesses must be subpoenaed to attend court on the day on which the case is set for trial in which they are subpoenaed as witnesses and to attend from day to day until discharged by law by the court or by the party by whom they are summoned as witnesses. Witnesses appearing on a given date may be ordered by the court to attend court on a subsequent day fixed or named by the court.