Jesus in anyone's bible said this about being able to pinpoint his return:
Matthew 24:44 (RNWT) On this account, you too prove yourselves ready, because the Son of man is coming at an hour that you do not think to be it.
In W05 10/1 p. 21, the WTS says this (remember 1975 and how the WTS said different then?)"Regarding events that would occur during the time of the end and that would lead up to his coming to execute judgment, Jesus gave this warning: “Keep on the watch, therefore, because you do not know on what day your Lord is coming. But know one thing, that if the householder had known in what watch the thief was coming, he would have kept awake and not allowed his house to be broken into.” (Matthew 24:42, 43) So Jesus likened his coming to the arrival of a thief—unexpected."
This disturbed me pre 1975, why the WTS was focusing on 1975 as the date when Armageddon was most likely to come, and privately kept my doubts to myself. Now the song is different after 1975 did not come at their suggested time. Many jws were disappointed too, to the point of the WTS numbers showed 2% worldwide decrease in publishers. I had one jw tell me that, Jesus said Christians would not know the day, but they would know the "year."! Not in print in any WT publications, but was an idea repeated informally to ease some jws concern. This is why not to believe WTS interpretations of scriptures.