If you happen to be up tonight (technically tomorrow morning) around 3:00am, then try and poke your head outside. According to NASA the full moon will be darkened by Earth’s shadow as our planet passes between it and the sun around 3:17am. December 21 is also the winter solstice, the longest night of the year, after which the days will begin to grow longer. Coupled with the lunar spectacle, it means we’re in for an especially dark eve. NASA also reports that this is the first time an eclipse has coincided with a solstice since December 21, 1638, and the next one won’t come around again until 2094. The extravaganza in the sky doesn’t end there, however, as the Ursids meteor shower will also be taking place.