Not very much except stops at bigger stations so that train retains its punctuality.
Also main motive is to reach CDG at around 6 am and board rewari at 10 pm .
This is my personal view that I always love to travel in a train which does not spoil any productive time , u sleep either in train or at home ....but if train starts from rewari at around 12-1 am, then night time will be spoiled sitting at platform.