Q: …when will Jesus come again?
Now hear this.
Or grab a Bible and read it for yourself. It is not held a secret or a mystery.
A: …when did he come the first time? (meybe some clue there)
The Temple was approaching calamity - a mockery of the Holy of Holies with a false idol and desecration by a foreign leader who hated G*d… and the Hebrew remnant were about to be dispersed all over the known world.
The Word, the scriptures and the guardians of scriptures had become polluted/deceived/diverted to a sort of OCD study of patterns in the text and popularization of secret or Kabala mysteries. One sect was sort of 'doomsday' Jim Jonesing out at Masada.
The Temple had also served its purpose in that Jesus had arrived and his Good news messengers had begun to Act on his mission. The Holy Spirit arrived on the day of Pentecost.
THEREFORE
if you perceive that The Word has been removed, that GD The Father, GD The Holy Spirit, and knowledge of The Good News of Jesus The Son has been polluted, totally banned or substituted to mock GD, and the people carrying the message killed off, and the visions revealed in The Revelations Of John of that time, including the man-made 'Beast' (The Substitute / Satan in the imitation of GD), you may with all certainty expect The Day Of Judgement to arrive with Jesus and The Host, the resurrected, with Him.
That is all.