2nd Oct 1914 has always been the end of the Gentile times. The Watchtower just hopes people don't notice that WW1 does not sync up with the start of the last days.
To this day I still kick myself over this. I actually figured that out before I was baptized. There was some older publication I was reading that specifically referred to October 1914. Most of the newer publications don't use the month and year preferring simply to focus on 1914 as the start of the end time. I have always been interested in history and knew WWI had begun in the summer of that year. I remember bringing this up to a young, zealous JW who was a few years older than me and between the two of us we couldn't figure out an explanation. I remember dropping the subject since in my naive opinion there was so much truth I was being exposed to and this subject was nothing in comparison to the great truths the Witnesses possessed.
I wish I had looked deeper into this subject, but this was happening in the mid-90s when the internet wasn't widely available.