Is it true that the appearance of a Blood Moon is an omen in Judaism? And why it happens to be coinciding every time with a Jewish holiday since quite a while? I would like to know about the facts and seek authentic information on this notion if it carries significance.
FYI:
http://earthsky.org/space/what-is-a-blood-moon-lunar-eclipses-2014-2015
http://unitedwithisrael.org/the-blood-moon-and-jewish-destiny/