Due to upgradation work of Delhi P.R.S. (Computerized Passenger Reservation System), the PRS Enquiry will remain closed for 7.00 hours from 10.00 p.m. on 12.08.2012 (Sunday) to 05.00 a.m. on 13.08.2012 (Monday).Therefore, PRS related enquiry of Delhi PRS through IVRS/Touch Screen, Call Centre (Telephone no. 139) will remain closed during the period.