There is a reason there are no clocks in a casinos. That most of us wake up at the same time everyday, whether we set the alarm or not. That time seems to go faster as we age and that our technology seems to get slower as we get accustomed to it.
Time is both a physical, psychological and biological constrict. The way in which they operate in both singular and parallel universes is the stuff that has kept both philosophers and scientists up many a long night.
Pulling all of this together is Alan Burdick in Why Time Flies: A Mostly Scientific Investigation.
My conversation with Alan Burdick: