There are some predictions in the Talmud for when Moshiach/Messiah will come.
Avoda Zara 9b brings a Beraisa and Rabbi Chanina that say when Moshiach will come (the opinions are a few years apart), and it uses language that seems to say that there is no chance that he won't come by then. I can speculate that maybe they just use the wording as a demonstration of them being eager for Moshiach, but if I knew I wouldn't be asking the question. Also it's not clear if they're saying "Don't buy land on a contract that will transfer ownership to you after 4231" or "For those who will live in the future, don't bother buying land because Moshiach will come any minute and it's a sign you don't have faith in that." Here it is:
(R. Chanina): Do not waste money buying land 400 years after the Churban, even for a pittance, for surely Mashi'ach will come then (and land will revert to its rightful heirs based on the division in the days of Yehoshua bin Nun).
(Beraisa): Do not waste money buying land in the year 4231, even for a pittance, for surely Mashi'ach will come then.
Sanhedrin 97b brings in Eliyahu who seems to say that Moshiach will come by the end of 85 Yovel cycles (and at 50 years each, that is 4250 years total), and Eliyahu seems to be saying that he is not sure if Moshiach will come before the end of this last cycle (but I could be misreading):
Eliyahu: The world will be at least 85 Yovel cycles. Mashi'ach will come in the last one.
Rav Yehudah brother of Rav Sala: Will he come at the beginning or at the end?
Eliyahu: I do not know. (Ramah's text - he will come at the end.)
Rav Yehudah: Will Yovel finish before he comes? (Maharsha - will he surely come then, or may he be delayed further?)
Version #1 - Eliyahu: I do not know.
Version #2 (Rav Ashi): Eliyahu told him, do not wait for him until this time. Afterwards, wait for him.
How was it understood by the rabbis quoted who lived a few hundred years before the time mentioned, by the rabbis who compiled the Gemara shortly before or around the year mentioned, and by Rashi and other later commentators long after the time has passed? What do we make of this so many centuries after this predicted date has passed?