are train no. 12487 and 22487 same or not?
Trains 12487/Seemanchal Express and 22487/Seemanchal Link Express are both different trains up to Katihar Junction. But from Katihar Junction both the trains merge and run as single train.
Actually the 2nd one 22487 is a link express train that gets attached to the 12487/Seemanchal Express at Katihar Junction. 12487 runs from Jogbani station while 22487 runs from Radhikapur station and both the trains run as single train up to Anand Vihar Terminal after getting merged at Katihar station.