Slots anta easy ga change cheyyadu. Within zone anukunte eepatiki GNT - TPTY ni accept chesi run chese vaduga. Paiga ee ZBTT lo konni trains timings change ayipoyi BZA - GDR section night time ki vachesay. BZA to GDR night 19:00 21:00 varaku every 20 minutes ki oka Train undi. So new TT change cheyyatam kastam.