Post regarding the superfast status of 12525/12526 Dibrugarh Kolkata Express.
I have find out two error, National Train Enquiry says total distance is 1582 kms (it is only possible when train goes from NBQ-KYQ via Jogighopa, Goalpara Town) and Indian Railway website says 1531 kms (if the train goes from NBQ-KYQ via Rangiya Jn. So there is an error of 54 kms.