There are plenty of trains running on the Gaya to Vindhyachal route everyday, so the train seat availability is sufficient. You can board a train to Vindhyachal from the popular railway stations of your city and reach there within a short period of time. Moreover, you will face no problem...
The first train from Varanasi to Jammu is 22317 - HUMSAFAR EXP departing at 12:20 AM from Varanasi Junction(BSB).Some popular weekly trains on Varanasi to Jammu train route are 12237 - BEGUMPURA EXP, 12331 - HIMGIRI EXPRESS, 13151 - KOAA JAT EXPRES. Every Friday 12237 - BEGUMPURA EXP ...