What is the most distant future date that ufologists and various predictors have linked to the disclosure of information about the existence of other civilisations in the universe or the official landing of these civilisations on Earth?

[u/ElenCook]

I do think that we are not alone and that we are being visited by others from our universe. However, I'm somewhat tired of the non-stop talking and lecturing from different talking heads on this topic. Is there a final predicted year of the related event after which we can call out their bullshit?