Blood Moon

This morning's lunar eclipse was also considered a "blood moon." The term blood moon seems to date back to biblical times when it was described the moon will turn blood red before the end of time. The term was then used to describe a series of four, total lunar eclipses, with no partial eclipse in between, each separated by six full moons. -earthsky.org

in addition, Blood Moon today is used to describe a red colored moon - all total lunar eclipses turn the moon red due to the dispersion of light during the eclipse.

This morning's blood moon was also considered the Hunter's Moon - interesting.