The prophecy of the four blood moons is the claim that four consecutive lunar eclipses that coincide with Jewish holidays signal a major event for the Jewish people. Possible events that have been theorized for 2015 include the final 7 years before Armageddon and the second coming of Jesus Christ.
In 2008, Christian minister Mark Blitz predicted that four lunar eclipses, occurring in 2014 and 2015, would signal the end times. However, he also stated that 7 years of great tribulation would begin in the fall of 2008, and he removed his prediction when this didn't happen. Another Christian minister, John Hagee, released "Four Blood Moons: Something Is About to Change" in 2013. It became one of the best selling paperbacks in the country, making the theory more popular. The book discusses previous groups of four lunar eclipses, and the events surrounding them, but doesn't predict specific events.
The dates of the lunar eclipses referred to in this theory are April 15, 2014, Oct. 8, 2014, April 4, 2015 and Sept. 28, 2015.
Although the theory received media attention, many Christian don't see the eclipses as significant. The theory has received criticism because three of the eclipses aren't visible in Israel and because this type of event isn't as uncommon as portrayed by Blitz and Hagee.