The “Big Event” happening in 2026-2027

So I’ve noticed that pretty much all of these whistleblowers, UFO researchers, Scientists etc, keep referring to some sort of “Big Event” that is known to happen or take place in the near future prompting all of this disclosure talk, most say 2027. I want to say I’ve heard late 2026 also haha. But at the same time none of them seem to ever elaborate on what said event is supposed to take place lol. So like, is there actually any truth in this orrrr?.. What do YOU guys think this big event is...