Section 11(2) in The Railway Passengers (Cancellation of Ticket and Refund of Fare) Rules, 2015
(2)The preponement of journey on confirmed or RAC or wait-listed ticket shall be allowed in the same class and for the same destination or any higher class by the same train or by any other train for any earlier days, subject to condition that(i)the ticket is surrendered during the working hours of reservation office at least forty-eight hours before the scheduled departure of the train in which the ticket was originally booked, subject to restriction on timings of this facility imposed by railway administration from time to time;(ii)the confirmed or RAC or wait-listed accommodation is available in the train in which fresh reservation is required;(iii)in case of confirmed tickets, fresh reservation fee for the class for which reservation is required, is paid; and(iv)in case of RAC or wait-listed ticket, clerkage charge is paid.
