Wow - all these long tedious explanations for such simply stated words by Jesus. How about taking them for what they are?
Many loopholes in your analysis. First, when Jesus spoke those words how could it be pertaining to the 144,000? There were NO ANOINTED at that time! You are piecing together pieces of scripture to support a preconceived idea and doctrine. You are not letting scripture interpret scripture. Who says anything about 1918 or 1914 other than the the WTS? Where in the bible do you get these dates? 607 is false - your 1914 premise is false. It all falls apart. Then you have the 144,000 - again a preconceived doctrine by the WTS - there is NOT ONE PLACE in the Bible that states that ONLY 144,000 go to heaven or belong to Christ! That falls apart.
Jesus indicates that no one will know the day or the hour and that there will be a huge element of surprise. Therefore the scripture that says:
Concerning that day and hour nobody knows, neither the angels of the heavens nor the Son, but only the Father.
For just as the days of Noah were, so the presence of the Son of man will be. For as they were in those days before the flood, eating and drinking, men marrying and women being given in marriage, until the day that Noah entered into the ark; and they took no note until the flood came and swept them all away, so the presence of the Son of man will be. Then two men will be in the field: one will be taken along and the other be abandoned; two women will be grinding at the hand mill: one will be taken along and the other be abandoned. Keep on the watch, therefore, because you do not know on what day your Lord is coming. Matthew 24:32-42
Jesus' words about the generation came true 37 years later. Period. Done. There is NO secondary major fulfilment. There is NOTHING biblical to back that up.