The blood moon prophecies were a series of prophecies by Christian preachers John Hagee and Mark Biltz, related to a series of four full moons in 2014 and 2015. The prophecies stated that a tetrad (a series of four consecutive lunar eclipses—all total and coinciding on Jewish holidays—with six full moons in between, and no intervening partial lunar eclipses) which began with the April 2014 lunar eclipse was the beginning of the end times as described in the Bible in the Book of Joel 2:32, Acts 2:20, and Revelation 6:12. The tetrad ended with the lunar eclipse on September 27–28, 2015.