I hope this is in the right area. I've been studying the 2520 days/years 607/587/586 debacle. For a while now I have felt 1914 was wrong. I starting thinking it in 1995 when the generation teaching was changed. I was doing some interesting number crunching today. I hope you can follow me on this and why I got chills when I saw this.
The Jewish Calendar has 12 months at 30 days, so 360 days a year. But every 19 year cycle (cycle is important in this), there are seven extra months added, so seven years have a "leap month" for lack of a better terminology. So take 360 days times 19 years gives you 6,840 days, plus add another 210 days to give you 7,050 days per cycle.
So that means in 2,520 years there are 132.631 cycles or periods.
So take your 6,840 and multiply it by 132.631 and you get 907,196 days.
Take your 210 days from your extra months per 19 years and get 27,852/27,853. (Right in the middle for rounding up or down.
So 907,196 plus 27,853 give you 935,049 days between the fall of Jerusalem and the end of the Gentile times, Jesus throws Satan out of heaven.
Go to this website and start putting in dates. http://www.easysurf.cc/ndate7.htm
I started with October 1, 1914 and subtracted 935,049. it came up with Monday, September 9, 647. Nothing of significance.
I went to October 1, 1934 and subtracted 935,049. Friday, September 9, 627. Oh well. (Figured for 20 years off.)
Then for fun, I put in October 1, 1975 and subtracted 935,049. WOAH! Sunday, September 9, 586!
I thought that Fred Franz at one point told a group in a special program, "Something happened in 1975, but we're not telling."
If 607 is wrong, 587/86 is indeed correct, something did happen in 1975. I hope the chronology would be corrected. Of course a house of cards would crumble but it's better to be correct than stubborn.