So the 70 weeks are 10 Jubilees periods that at the end of the 70 years of captivity and lead to Christ. Of course, the 70 years of captivity started in 530 B.C.E and would have been ended in 460 B.C.E. That year was the year in which the 70th Jubilee would be heralded. (Very fitting). Then from there we go 490 years unto 31 AD where the next Jubilee is declared - 80th. Of course if you count Jubilee from there to the 120th in 1991 then you will see were in the last cycle before the 2nd Coming when the Lord destroys the Ungodly which is very terrorizing event that is going to set the earth on fire.
2Pe 3:12 Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?
2Pe 3:13 Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness.
But that day cannot really come until Secularism rises to its climax on earth where mankind sees itself as God and uses its practices to promote what it believes is best for man with a forward rejection of all that is religion but not without first using religion to prune out those elements holding unto more orthodox positions.