December's Cold Moon—the last full moon of the year—will appear in the sky overnight and coincide with a rare lunar event in which observers can see it rise and set at its most extreme points on the horizon.

After back-to-back supermoons in August, September, October and November, we're back to a regular full moon in December. But the December full moon is not insignificant, coming as it does in proximity to the winter solstice.