More than three years have passed since most of North America saw a good total lunar eclipse. So be sure to put a big circle on your calendar for Sunday, Jan. 20.
The viewing circumstances for the eclipse of the full moon that evening will be as good as they can get for much of the United States and Canada. The eastern side of the continent has the best view, but the spectacle of the moon completely immersed in Earth’s shadow will be readily visible from coast to coast. The duration of totality will be longer than normal, too: It will last 1 hour and 2 minutes.