It's called "Superblood Wolfmoon"—which is definitely a pretty bad-ass title for a rock song, but it's not an actual thing.
Traditionally speaking, the Wolf Moon occurs in January, and the Blood Moon in October. While we're on the subject, it's worth noting that the next supermoon—which is what it's called when a full moon occurs when the moon is closest to Earth in its orbit—won't happen until March 9.
But who cares about all that? Not Pearl Jam, probably. "Superblood Wolfmoon" is the band's new single, and if you want to hear it, you'll have to go here to get an augmented-reality app. This will allow you to listen to the song and see its attendant visuals, but only if you point your phone in the direction of the moon.
Pearl Jam's new album, Gigaton, comes out on March 27, and its release has already been preceded by the equally cosmic video for "Dance of the Clairvoyants".