Three rows, of time coordinates, are generated when after adding start and stop times for a thread schedule.
This behavior is by design.
Thread schedules are based off of a 24 hour time cycle. When created, the time before and after the schedule is included to graphically display when it will be active, and when it will be inactive.
A screen shot showing a thread schedule is attached. It is active from 08:00 to 09:00 and illustrates how the schedule will be used..
- From 00:00 to 08:00 the job will got to a queued state, then queued wait until 08:00
- From 08:00 to 09:00 the job will run as expected
- From 09:00 to 23:59 the job will go into a queued state, then remain in queued wait until 08:00
Describe resolution here