I’m not saying that this prophecy is false. I’m not saying that it’s true, either. What I am saying is that the Church maintains that the faithful are not obligated to believe in private revelations. Take, for example, Fatima. Is it a good idea to say the Rosary daily as our Lady requested during those apparitions? Probably. Does the Church say the faithful are obligated to? Nope.
This is from www.spiritdaily.com:
*The concept of three darkened days hearkens back to the Book of Exodus, wherein Moses stretched out his hand toward the sky “and there was thick darkness in all the land of Egypt for three days,” according to Scripture (Exodus 10:22). Others point to Mark 13:24 and the prophecy that “in those days, after the tribulation, the sun shall darken and the moon shall not give her light.”
This concept of chastisement through darkness returned in a big way during the last part of the 18th century – around the time of the French Revolution – and then through the 19th century, when a flurry of mystics, including luminaries such as Blessed Anna Maria Taigi, foresaw a time of extraordinary blackness. Although they started out as relatively mild (at LaSalette, an unapproved part of a prophecy called for three days of “convulsions”), such predictions gained momentum through the decades as mystics added their own, often sensational details. It would be a worldwide chastisement, claimed Marie Julie Jahenny of Coyault, France. Day would be as night, they warned. Night would be like a coal mine. The darkness would be almost palpable. Claimed Jahenny, who was born in 1850 (according to one website):
The three days of darkness “will be on a Thursdays, Friday, and Saturday. Days of the Most Holy Sacrament, of the Cross and Our Lady. . . .” three days less one night."
“The earth will be covered in darkness,” she quoted the Virgin Mary as saying on 20th of September 1882, and hell will be loosed on earth. “Thunder and lightning will cause those who have no faith or trust in My Power, to die of fear.”
"During these three days of terrifying darkness, no windows must be opened, because no one will be able to see the earth and the terrible color it will have in those days of punishment without dying at once… "* [Edited by Moderator]
To read the rest, go to: spiritdaily.org/Prophecy-seers/threedays.htm