Break out the flashlights. When a full lunar eclipse takes place on the shortest day of the year, the planet may just get awfully dark.
The upcoming Dec. 21 full moon — besides distinguishing itself from the others in 2010 by undergoing a total eclipse — will also take place on the same date as the solstice (the winter solstice if you live north of the equator, and the summer solstice if you live to the south).
Update: Oh, and I missed this pet peeve of mine in the first sentence. It’s not the shortest day of the year. It’s the day with the least amount of sun, it’s still a 24 hour day. It’s understood, I think, but seems kind of sloppy.