That’s no moon. Oh wait, yes it is. Tonight’s eclipse, however, will not be this noticeable. (Photo by NickG-B)

While you’re out tonight, look up and you might notice that the moon looks a little funny. That’s because there will be a lunar eclipse tonight.

But don’t get too excited, astronomy nerds, tonight’s eclipse is only a penumbral eclipse, which means that the moon will only be partly shadowed. Unlike a full eclipse (wherein the sun, moon, and Earth are in perfect alignment and the Earth’s shadow completely covers the moon), or a partial eclipse (in which the alignment is a little off, causing only part of the moon to be covered by the Earth’s shadow), a penumbral eclipse finds the alignment of the three a little bit more off, causing only a slight shadow cast on the moon.

As the Christian Science Monitor reports, tonight’s eclipse won’t be nearly the spectacle as a full or partial eclipse:

During Friday night’s penumbral eclipse, don’t expect to see a cookie-bite out of the full moon, let alone a totally darkened and reddish moon. In fact, you won’t see anything unless you look within a few minutes of the maximum effect.

During the the maximum part of the eclipse, at most, you’ll see a “shadowy smudge” that will affect the “southern half of the moon.” Also, unlike other eclipses, this one is perfectly safe to look at.

So when will you be able to see this thing (if you look hard enough)? Well, the eclipse begins at approximately 5:53 p.m., and will be at maximum eclipse (when the moon is closest to the center of the shadow) at approximately 7:50 p.m., according to TimeandDate.com. The whole thing will be over by 9:48 p.m., so synchronizes your watches accordingly.