A rare astrological event set to take place next week could herald the “end of days,” according to some who have been following the blood moon phenomenon. The internet is awash with forecasts, from cataclysmic catastrophes to the Rapture, as a fourth lunar eclipse in two years — the series is known as a tetrad — will fall on the first night of the Jewish holiday of Sukkot taking place on September 28. Some Christians believe the celestial event could mark the start of disaster, based on a passage from the Book of Joel, which reads:

“The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the Lord comes.” Blood moons are full lunar eclipses in which the sun’s rays entering through the earth’s atmosphere make for a red, or blood-like, appearance. The first three instances of the current tetrad have already occurred on Jewish holidays, on April 15, 2014 (Passover) and October 8, 2014 (Sukkot) and April 4, 2015 (again on Passover). FULL REPORT