how punctual this train is? i booked a ticket in this train from adi to ngp journey date 11/01/15.. and on 12/01/15 i have to board 12811 ltt hte exp at ngp.. time difference between these two trains at ngp is approx 1hr&30 mins.. is it safe for me? is there any chance of missing 12811 at ngp? plz help..