Dear John & Doves:
My surprise included myself. I can remember doing sniff tests on various tribulation scenarios. I remember clearly giving up completely on 2011-2018 and here's why:
Rosh Monday, September 10, 2018 2550 Saturday, September 17, 2011 Elul 17
Monday, September 10, 2018 2520 Monday, October 17, 2011 Tishri 19 Sukkot 5
Elul 1 Sunday, August 12, 2018 2550 Friday, August 19, 2011 Av 19
Sunday, August 12, 2018 2520 Sunday, September 18, 2011 Elul 18
The only hit had Jesus missing the fulfillment of Rosh & Atonement. If I switched to an inclusive day reckoning it would have been Sukkot 4. This 70th week scenario completely lacked in internal coherence so all the signs in the sun, the moon and the stars would be just that; signs. The 70 year generation thing is too nebulous. The closest we can get is between 70 and 80 years.
The two scenarios that have internal coherence are 2012-2019 and 2013-2020. (Note: I have not run the numbers on any later time spans.) For some reason I was not lead to do the sniff tests on the 2012-2019 scenario at that time.
I don't think there is enough prayer on the planet to push the Trib back to the 2013-2020 scenario but I could be wrong.