Lol, average of 13 kmph for that train. In this Puri - Sealdah case, the problem comes over when trains xing over to Sealdah station and in the process have to cross a lot of lines. The main line from Kharagpur goes straight to Howrah and no EMU or Intercity goes to Sealdah via this route; only a few long distance trains do this and all of them have this slack built in.