The Missouri Supreme Court set the execution date for Roderick Nunley for the 24-hour period beginning at 6 p.m. on Sept. 1.
Missouri has executed four men this year, and another inmate is scheduled for execution Tuesday evening.
Nunley was one of two men who pleaded guilty and received the death penalty in the death of Ann Harrison. She was waiting for a school bus in front of her home when she was abducted.
Michael Taylor was executed for the same crime in 2014.
An appeals court ruled earlier that Nunley wasn’t entitled to a new sentencing hearing because he waived jury sentencing when he pleaded guilty.