Hi CherokeeNationRadio,
Please be aware that tracks on the Auto DJ playlists are never interrupted mid-track. So if a longer track was playing just before another scheduled playlist was due to start, the system would wait for that track to finish first. So, if for example the track playing is an hour in length, it will run for the full hour before a scheduled playlist kicks in.
So with this in mind you will have to build and calculate the playing length of your playlists around this.