Hello guys , i hav a query , my ticket is booked in Sleeper class (PQWL)in Golden temple mail from mumbai central to nizzamudin.. it 's on Sunday 15-1-12 , but my plan has changed and now i wd b coming On Saturday i.e 1 day in Advance , So can i prepone my journey and use the same ticket for that day .. please reply .. my PNR is 816-4148623