You might also check out the entire chapter Matt 24. Specifically notice verses 32-36:
"Learn a lesson from the fig tree. When its branch becomes tender and sprouts leaves, you know that summer is near. In the same way, when you see all these things, know that he is near, at the gates. Amen, I say to you, this generation will not pass away until all these things have taken place. Heaven and earth will pass away, but my words will not pass away. "But of that day and hour no one knows, neither the angels of heaven, nor the Son, but the Father alone.
There is also a great deal of information about end times near the end of Luke 17 and Luke 21, and Mark 13.
I suspect one of these references contain what you are trying to find. If not, shout out again!