Perhaps there is an electrical or signal issue that happens at that time. Is there anything else electrical that comes on or goes off at Tuesday 10PM in the home, especially something with a high current draw? Also, check with your neighbours that have Rogers and see if they have something similar. If they do, then there may be a drop in the signal to your neighbourhood.
It should not be doing that, especially not at 10PM.
The 8300HDs do not have the regular reboot pattern that some 8642 and 9865s do. Even my 9865 goes months between reboots. I have an 8300HD downstairs that hasn't booted since April - I just checked. (it's on a UPS and stays up even during power failures).