Bp mail dellhi arrival 6 am considering it will be fastest train till sgnr still it will reach sgnr at 1 pm , then it will have to depart 4pm from sgnr to reach delhi by 11:30 pm . Time for maintenance 3 hour max . Considering the present running status train id reaching delhi by 3 to 7 hour late with few exceptions . So it will be rescheduled from sgnr 3-4 times a week .