Maryland Criminal Procedure Section 6-227

      (a)      In sentencing a defendant to imprisonment, a court shall sentence the defendant for a period that will expire between the first day of April and the last day of August if the court considers it expedient to do so.

      (b)      In sentencing a defendant to imprisonment in compliance with subsection (a) of this section, a court may sentence the defendant to imprisonment for not less than 18 months if the punishment required for the crime is at least 2 years.