Where people sometimes get muddled is where they try to 'scale' time. There is a school of thought that time should also be speeded up so that 1 hour should only last 47 seconds ! ( (60x60)/76) To my mind this is the pathway to madness. A 24 hour day in this world therefore lasts 18 minutes on the model. And indeed there have been those who created fast clocks to achieve this. Faster clocks can have their uses especially in exhibition layouts where it is possible to compress a day's timetable sequence into a reasonable viewing window, which helps to maintain viewer's interest. A small branch line terminus can be incredibly boring if run in real time, with hours of inactivity. However then running trains at 'scale' speed to adhere to 'scale' time results at trains scuttling along faster than a Hornby 'Smoky Joe' at full power.
Time needs to be a constant. It makes life much more simple. However a timetable can be speeded up provided that running speed remains realistic. I wonder what Albert Einstein would have said!
refuses to go any further 
