On-Time Operator - Version 03.02 On-Time Operator is the key to unattended execution of computer operations. The core application has the facility to run a computer program, such as .exe, .bat, music files, etc., at predetermined intervals (e.g., every 20 minutes) or at a given time of the day. An advanced graphical user interface enables the user to intuitively navigate the application and specify selections of choice.