Sometimes people forget what day of the week it is. My mother once showed up for a doctor's appointment a week early. The lady thought she was crazy.
We've had a few instances where someone gets the date confused and forgets to do something time sensitive by the completed by date.
Could there be a reminder kind of like how Gmail will ask "Would you like to follow up?"
A simple "Due Today" could appear and a few days out it could say "Due Soon".
Thanks!