To begin our study, note that the phrase "blood moons" does not appear at all in the KJV Bible. The three places in Scripture where our closes celestial neighbor turns into the color red is Joel 2:31, Acts 2:20 (which quotes Joel) and Revelation 6:12.
A lunar eclipse is the obscuring of the moon's light (which is a reflection of the sun's rays hitting it) due to the earth passing between it and the sun. A solar eclipse, on the other hand, is the obscuring of the sun's light due to the moon passing between it and the earth. A tetrad is a series of four consecutive total eclipses of the lunar surface. Tetrads are relatively rare occurrences. While none occurred from 1582 to 1908 A.D., seventeen total have and will take place from 1909 to 2156 A.D. The tetrad related to the most recent fascination with blood moons begins in 2014 (April 15 and October 8) and ends in 2015 (April 4 and September 28).
Does the Tetrad occur within Holy Days?
Would-be prophets have placed a significant amount of emphasis on the belief that each of the four lunar eclipses in the tetrad which 'should' produce blood moons will fall within God's annual Holy Days. Is this true?
The first total lunar eclipse of the 2014 - 2015 tetrad did indeed occur within one of God's Feast Days. It fell from 7:06 to 8:24 UTC (Universal Time Coordinated) on April 15th, the first day of the Feast of Unleavened Bread.
The second total eclipse, according to NASA, begins at 10:25 UTC (6:25 a.m. EDT) and ends at 11:24 UTC (7:24 a.m. EDT) on October 8 2014. It occurs almost twelve hours BEFORE the official beginning of God's annual Holy Day period known as the Feast of Tabernacles, which begins at SUNSET on the same day! All Biblical days begin and end at sunset.
Anyone who states all four eclipses in the tetrad that produce the blood moons occur within God's annual Holy Days do not know what they are talking about!
The third lunar eclipse on April 4, 2015 places it within God's annual Spring Holy Days. The last eclipse in the series happens on September 28, 2015, placing it just within the Fall Holy Day Season.
What makes it look red?
When the sun's rays are blocked from striking the moon, as during an eclipse, the lunar surface reflects whatever colors the earth's shadow (creating by the planet's atmosphere) contains as it goes across the desolate landscape. If our atmosphere contains particles of ash and dust from a volcano, the shadow cast will likely look vivid red like blood. If the atmosphere contains many clouds, however, the surface will look darker.
Prophets who profit
The discovery of the tetrad and the belief all the eclipses occur during God's Holy Days (which, as we have shown, do NOT) has proven a boon to prophecy-based ministries and prophecy-interested outreaches.
One prophetic commentator trumpets his belief the tetrad occurs during the Holy Days and rhetorically asks what it all means. His answer to his own question calls for people to WAKE UP and heed what he labels the "ominous" signs from heaven. A World Net Daily article on whether Jesus will return in 2015 quotes Pastor Mark Blitz as suggesting the string of lunar and solar eclipses to fall on God’s annual holy days could herald the second coming of Jesus. Pastor John Hagee argues that prophecy in the Bible points toward the earth reeling toward its last days. In Earth’s Final Moments, Hagee claims to unveil how the prophetic writings of Scripture intersect with current events to reveal our world's last moments.
Will the world receive a warning?
One would expect the Blood Moons to be visible by EVERYONE, especially if they are to be a sign from God almighty that the WORLD will finally be ending! If the tetrad cannot be seen worldwide, SURELY it would be viewable in Jerusalem given its pivotal role in end time prophecy! According to NASA, the April 15, 2014 eclipse was NOT visible AT ALL in Jerusalem, or the Middle East, or most of Europe, or even central Asia. The eclipse of October 8 of the same year will again NOT be visible in Jerusalem, or in the entirety of Africa and Europe! The April 4, 2015 'blood moon' will also not be visible in Jerusalem or for all of Europe and Africa. Even on September 28, 2015, Jerusalem's last chance to be warned of its impending doom, it will only be able to see PART, not all, of the total eclipse. One must ask whether a sign that few people notice is much of a sign.
The Real End Time Sign
An Old Testament prophet wrote of the day of the Lord (which is not a twenty-four hour period but an extended time frame) as being a day of thick darkness (Joel 2:1 - 2, 10). This description was repeated by Jesus himself (Matthew 24:29). Joel added the moon shall be turned to blood, and John referred to the moon becoming the same color and the sun being black (Revelation 6:12). The eclipses in the 2014 - 2015 Tetrad all last less than two hours. The darkness that fell over Egypt as punishment for not releasing the children of Israel from slavery lasted for three days (Exodus 10:21 - 22). Might we anticipate the darkness of the day of the Lord to last a bit longer than two hours? Also, since God punished Egypt by causing water to turn to blood for seven days (Exodus 7:19 - 20, 25), should we be surprised if the blood moons of Joel and Revelation lasts for at least that long? The TRUE sign of the end and the return of Christ will be so spectacular that it will be undeniable (Revelation 19). You will not need a 'prophet' to tell you anything.