train departed from cst at 2:45 am almost 2 & half hour late previous nagpur special train is having 23 coaches including 5 unreserved coach but presently premium special is having only 19 coaches & reservation charges via internet for sleeper class is rs.690 & for duronto express sleeper charges is rs.490 it takes 12 hours to reach nagpur & premium special train takes 14 & half hour to reach nagpur.
at present status what is difference between premium special train & passenger train