The OT may or may not hppn @ NK, but mostly happens there!!
The OT as mentioned in site will never b correct, as its in auto-mode, whch captures train average speed between two stopping intermediate station & evenly project over non-stopping stations in between, which leas in probable OT/X-O approximation...but this definitely makes way for slight guess as which region the train probably gets OT!! Like here, AV/NK hardly do hav 18 Kms difference & u knw, approximately in these span, OT get hppn, in ideal condition!