Jesus Himself declared that no one would know beforehand when He would return (Mark 13:32), so to forecast a specific day appears foolish.
Why didn't Jesus come back during the blood-red moon of 2015?
A few years ago, some people took notice that there would be a series of blood-red moons in 2014 and 2015. You may have seen a slew of pictures on Facebook or other social media when they appeared. It was a beautiful occurrence. This moon coloring is usually caused by a lunar eclipse and there were four in these two years. Some people connected these lunar happenings with references to end-times prophecies in Joel and Revelation.
However, even more interesting was the timing of the eclipses. In both 2014 and 2015, a full lunar eclipse occurred on the first day of Passover and on the first day of Sukkot (the Feast of Tabernacles). Additionally, two solar eclipses occurred in 2015. Just seven times has this combination of lunar eclipses happened since the time of Jesus. Two of those seven times are within fairly recent memory—in 1948 when Israel was established again, and in 1967 when the Six-Day War occurred. Hmmm.
Of course, the theories about the return of Jesus being connected in some way to what we can observe and predict in the "heavens" are just that—theories. The ones regarding 2014 and 2015 were wrong.
The first biblical reference to a moon like blood is found in Joel 2:30–31: "And I will show wonders in the heavens and on the earth, blood and fire and columns of smoke. The sun shall be turned to darkness, and the moon to blood, before the great and awesome day of the LORD comes."
The second is in Revelation 6:12–13: "When he opened the sixth seal, I looked, and behold, there was a great earthquake, and the sun became black as sackcloth, the full moon became like blood, and the stars of the sky fell to the earth as the fig tree sheds its winter fruit when shaken by a gale."
It may be worth the energy to understand some of the general theories and occurrences in the Bible which describe Jesus' return, but speculating on a specific day is a waste of time. Better to spend energies seeking to know and follow Jesus' teachings and commands in preparation for that day (2 Peter 3:9–13).
What are the signs of the end times?
What is going to happen in the end times?
Is the idea that seasons won't be recognizable in the end times biblical?
What is the biblical importance of a red heifer? Is the birth of a red heifer a sign of the end times?
Can we trust biblical prophecy? Does biblical prophecy really predict the future?
Truth about the End Times