s the epg populating using the epg button? I Am guessing you are not using the latest available updates? There were problems like you mention early on but they seem to have been resolved.
I am using the latest updated Satdreamgr. Last night it was still having these epg problems, but not on all channels. Today after a cold boot and enigma restart for the usb tuner, it seems to be behaving in regards to the hour vs. description compared to the actual program on display.
You can also set the receiver to get the time from ATSC. You need to also set an ATSC channel that the receiver goes to when first started if you use ATSC transponder time.
I always use internet time because of all the timers I have setup with very close start/end times and switching between atsc and sat channels could create conflicts.
Will check tonight's recordings to see how it goes.