I personally think that no one "knows" when, there are many places in the Bible that say we wont know when he is coming back, but it is coming.
I had this very question, so I did some asking and research, and the best example I found was here:
[BIBLE]Mat 24:3 And while he was seated on the Mountain of Olives, the disciples came to him privately, saying, Make clear to us, when will these things be? and what will be the sign of your coming and of the end of the world?
Mat 24:4 And Jesus said to them in answer, Take care that you are not tricked.
Mat 24:5 For people will come in my name, saying, I am the Christ; and a number will be turned from the true way through them.
Mat 24:6 And news will come to you of wars and talk of wars: do not be troubled, for these things have to be; but it is still not the end.
Mat 24:7 For nation will be moved against nation, and kingdom against kingdom, and men will be without food, and the earth will be shaking in different places;
Mat 24:8 But all these things are the first of the troubles.
Mat 24:9 Then they will be cruel to you, and will put you to death: and you will be hated by all nations because of my name.
Mat 24:10 And numbers of people will be turned from the right way, and will give one another up and have hate for one another.
Mat 24:11 And a number of false prophets will come, causing error.
Mat 24:12 And because wrongdoing will be increased, the love of most people will become cold.
Mat 24:13 But he who goes through to the end will get salvation.
Mat 24:14 And this good news of the kingdom will be given through all the world for a witness to all nations; and then the end will come.
Mat 24:15 When, then, you see in the holy place the unclean thing which makes destruction, of which word was given by Daniel the prophet let this be clear to the reader,
Mat 24:16 Then let those who are in Judaea go in flight to the mountains:
Mat 24:17 Let not him who is on the house-top go down to take anything out of his house:
Mat 24:18 And let not him who is in the field go back to get his coat.
Mat 24:19 But it will be hard for women who are with child and for those with babies at the breast in those days.
Mat 24:20 And say a prayer that your flight may not be in the winter, or on a Sabbath.
Mat 24:21 Because in those days there will be great sorrow, such as there has not been from the start of the world till now, or ever will be.
Mat 24:22 And if those days had not been made short there would have been no salvation for any, but because of the saints those days will be made short.
Mat 24:23 Then if any man says to you, See, here is the Christ, or, Here; do not put faith in him;
Mat 24:24 For there will come up false Christs, and false prophets, who will do great signs and wonders; so that if possible even the saints might be tricked.
Mat 24:25 See, I have made it clear to you before it comes about.
Mat 24:26 If, then, they say to you, See, he is in the waste land; go not out: See, he is in the inner rooms; put no faith in it.
Mat 24:27 Because as in a thunderstorm the bright light coming from the east is seen even in the west; so will be the coming of the Son of man.
Mat 24:28 Wherever the dead body is, there will the eagles come together.
Mat 24:29 But straight away, after the trouble of those days, the sun will be made dark and the moon will not give her light and the stars will come down from heaven and the powers of heaven will be moved:
Mat 24:30 And then the sign of the Son of man will be seen in heaven: and then all the nations of the earth will have sorrow, and they will see the Son of man coming on the clouds of heaven with power and great glory.
Mat 24:31 And he will send out his angels with a great sound of a horn, and they will get his saints together from the four winds, from one end of heaven to the other.[/BIBLE]
If you dont understand this please ask, I will do my best to help you further as will many other wonderful people here! Good luck
- Justin