Me personally, I lean towards the "Three Days of Darkness" scenario. I don't know why, exactly. Perhaps I was exposed to it as a child, by parents who thought the world was coming to an end with the hippies and the runaways and the drugs and Goldie Hawn half-naked on "Laugh In" and The Manson Family and a doomed war and Nixon lying and spying and gas at $1.29 a gallon and a new priest with a moustache and shaggy hair who didn't know any Latin. I think the 3DD was popular there for awhile, among older Catholics, before most of them just gave up and accepted it all with a fatalistic shrug.
I have distinct memories going back to when I was two years old in 1967, and lately now things pop into my head that seem to be simultaneously new ideas and ancient truths. I wonder how many of those ideas are holdovers from the old days, archives from my childhood being opened up and files floating out and into my consciousness. Perhaps the 3DD is one of those. Or maybe my angel has dragged it out, and is waving it around in front of me, as a warning to get my act together. Either way, it seems likely to me that something big is going to happen soon. The 3DD seems as logical to me as any other possibility.
BTW, does anyone know where I can get some pure beeswax candles?