I am pretty sure that the 2017- 2018 date is accurate based on the jubilee after Jerusalem returning to the Jews in 67.
We seem to be ready to divide Jerusalem and you know what it says about the person that does that.
That would mean that around mid 2013-2014, there could be a throne scene for the AC there.
That would mean that after the next election the man who actually hates the Christians will attack them more openly.
I believe there will be a period of persecution prior to the rapture.
When he takes his throne rapture will happen.
Plan ahead, don't waste time.