The 1914 Doctrine is complete and utter bollocks from start to finish, start = 607 BCE which has been totally discredited as a date for the destruction of Jerusalem, King neb. was not even ruling then ! It has been proven by several methods that are irrefutable evidence that the destruction the Org. refers to happened in 587 BCE.
The middle idea of the "Prophecy" is bollocks too, no way can you extrapolate 2520 years from Daniel 4 anyway, it is a total fantasy brain-fart idea by William Miller in the early 19th Century, a farm boy and amateur Bible interpreter.
The End, if you start from the proper year, you are in a year when nothing happened of any significance, 1934.
They are stuck with 1914, because : No 1914 = No 1919 Choosing by Jesus = Today's G.B are self-appointed Charlatans.