So that is the starting point, which was 607 BC, when Jerusalem fell to Babylon.
What? so there's a little controversy about 607 BC, we don't need to worry about that because 1914 is ALSO completely verified by a simple inspection of the dimensions of the Great Pyramid. It has been verified by MULTIPLE sources, (actual 607 historical event, GB says so, and Great Pyramid, thats 3 independant sources, folks, bulletproof) so, as you can see, there is no reason to doubt it.
.... and besides Jehovah's spirit directed organization wouldn't get it wrong anyhoo.
(almost died laughing when I excitedly started scrolling down to respond and was confronted by an open can of worms! Nice placement of graphic )