It's true that January 31st will be a busy day for Luna. First, there is indeed a total lunar eclipse, the first in nearly 2 years visible anywhere. As we've noted elsewhere, those living near the West Coast and most everywhere around the Pacific Rim will have the best views. The Moon usually takes on a deep red or coppery color during totality, hence the often-used term "blood Moon" to describe its appearance. Those of us stuck on the East Coast of the U.S. will be challenged to see much of anything as the Moon sinks out of sight in the west as the Sun comes up.
Second, this event falls on the second full Moon of the month, what's often called a "Blue Moon." And, third, the eclipse comes just 27 hours after the Moon reaches perigee, its closest orbital point to Earth. Lots of you have no doubt heard this extra-close full Moon called a "super-moon."
Yes, it's an astronomical trifecta. But it's not nearly as rare as you might have heard.