For the first time in 150 years, we can expect a blue moon total lunar eclipse on 31 January. A blue moon is the second full moon in a month—and the eclipse will happen in the middle of the night. Viewing, however, is best “in Central and Eastern Asia, Indonesia, New Zealand, and Australia,” according to Slash Gear. For those in the contiguous United States, the eclipse will be interrupted by moonset. If you miss this, don’t worry, the next wait is only until 2028 this time. Read more over at Slash Gear.