In Boston and surrounding towns, this phenomenon will occur between 9:26 p.m. and 10:42 p.m. (disappearance and reappearance times). While it will be easy to see the moon and Mars early in the evening with the naked eye, watching the actual occultation will require a bit of hardware, say binoculars or a telescope.

The moon will occult Mars in a rare astronomical event on Jan. 13, coinciding with the month's full Wolf Moon that peaks on the same night. Here's everything to know about how to watch.