We’re down to a very limited number of catastrophes that could be global in scale without a gradual increase over months weeks or days.
Crossing the galactic equator is out because we’d have been feeling that approach for a looong time.
An asteroid seems unlikely because astronomers would have spotted it by now and the fact that Obama is continuing his attack on America unabated seems to indicate he expects the world to continue past tomorrow.
Its gonna have to be a gamma ray burst or something similar.
Is there a galactic equivalent to the Shellback ceremony for crossing the equator?
How about the explosion of the Yellowstone Caldera followed a nanosecond later by a 12.0 earthquake along the New Madrid fault line?