Another crucial piece of evidence is timings------time of death and also those times given by witnesses,which were way out when the victim was allegedly seen at 11am after having supposedly been murdered by/at 10am. Unless anyone lived by their clock/watch,it's virtually impossible to give any sort of an accurate or near time.
If you left the house,without looking at the time and weren't wearing a watch and someone suddenly asked you the time chances are you could be a good half-hour or so out.
In the clip shown this morning,and because it was summertime,it's quite easy to think or say it's later than it appears to be because of the extra hour of sunlight.