Where's the Clock?
Some detainees don't like to know the time or the day of the week. They just want to sleep the time away. They gauge their time through the three daily meals.
For me, I like to know the day and time because I have too much to do. 24 hours are not enought for me to do all the things I want to do. That seems to be the same issue I have been experiencing over the past 10 years. The reality is that I don't think it'll change any time soon. I just have to flow with time.
The clock is ticking whether it's visible or not.