Time keep on change like a rotating wheel and think what happen when there was no clock to see time.
At that time people used to analysis the sun rise and fall moon timing when it come at night.
Time have it's own importance
Time keep on changing and when it goes we realise it's importances.
Without time our life will not have a proper schedule and timetable.
Time teaches us management of everything.
Time can be seen through mobile and laptop, clock devices.
But in earlier days when no clock was than people used to analyse it approximately.
Now a days we dependent on these devices. And we forget that if we forget we can analyse it.