It will only occur in a specific location if natural or globally if artificial i.e. several huge space mirrors are put up there to create the conditions or the Earths wobble gets very big and say Jerusalem suddenly finds itself in a similar situation as any settlement just in the artic circle. You can have both and according to Biblical accounts have fulfilled prophecy.

You only with mirrors need tin foil 5000 miles or less across, if you got it up there you probably used illegal nuclear rockets and the sort of people without those scruples and wealth have no problem with ending the world according to a script. Smoke and Chemtrails, no we already have them and a nuclear winter would last decades.

Orbit halt, already we are feeling a disturbance in the solar system, however any object passing through would be visible on the Earths night side for six or months of the year even if it passed through the inner solar system. You can still see Saturn and Jupiter with the naked eye and they are pretty far out and far less massive than an object required to move the Earth any.

Dark matter, there was a science fiction story where an intelligent nebulae used stars as its power source and crossed over to the solar system turning off all the local stars, if we are passing through a cloud of dark matter/energy whilst passing theough the very central disk of the galaxcy we might get such an effect, only we would not have the first sun to pass through n our local group so would have had advanced notice as other stars disapeared. If the electric universe theory is true and our almost unique star is not a nuclear furnace but a plasma field over a super jupiter the current could go off at any time, just don’t expect there to be an on switch.