WTT isnt shown at NTES or irctc or indianrail.gov.in but PTT is on display!!
Difference exist coz of : PF Constraint, Line Clearance, Usual Blocks, LC/LPC, Charting Station etc.
In case train report BT & has finished Station formalities, it will leave as per PTT not WTT coz if WTT was religiously followed then you may never find train's unusual BT arrival/run!!