This train is really a boon for Kanpur also.
It is very useful in 3 ways:
1. 12581: Daily over night train from Varanasi to Kanpur
2. 12581: Train always reaches after 6:30am. N it will never arrive CNB before it, So a daily SF train to Newdelhi at Morning time.
3....
more... 12582: Daily over night train n substitute for Shramshakti from.New Delhi to Kanpur.