Not really sure what this is.
When I first heard about this phenomenon, I remembered this quote:
Signs and wonders appeared, foreboding disaster and doom. In the midst of the night an unnatural light shone over the temple and the altar. Upon the clouds at sunset were pictured chariots and men of war gathering for battle. The priests ministering by night in the sanctuary were terrified by
mysterious sounds; the earth trembled, and a multitude of voices were heard crying: “Let us depart hence.” The great eastern gate, which was so heavy that it could hardly be shut by a score of men, and which was secured by immense bars of iron fastened deep in the pavement of solid stone, opened at midnight, without visible agency.—Milman, The History of the Jews, book 13. {GC 29.3}
Maybe this has nothing to do with the end of the world, but who knows? We must be in the wait and see mode.