Tonight, between 10:01 p.m. and 10:51 p.m., a total lunar eclipse will be visible in South America, most of North America, Western Europe, Africa and Western Asia. The partial eclipse will first be visible at 8:43 p.m. and the whole thing will be over by 12:09 a.m.

There are usually two lunar eclipses a year, though a full lunar eclipse like tonight’s is much morerare. Keep an eye out for Saturn and the star Regalus, which will be visible tonight near the moon. The reflection of the moon usually drowns them out.

Predicted rain and snow in the Philadelphia area might make the eclipse tough to see, but the Franklin Institute has you covered:

Frankline Institute: Lunar Eclipse Event

More lunar eclipse info from NASA here.