It seems like every other month there are rare full moons in the sky this year. Blood moon, Strawberry moon, etc and Friday the Black Moon.
A black moon is sometimes considered the opposite of a blue moon. A blue moon occurs when there are two full moons in one month. There are several definitions of a black moon, but the lunar event Friday will happen because there is a second new moon in one month. Black moons occur about once every 32 months.
The only problem is, as the story explains, you won't be able to see it. So don't plan on setting your alarm to get up to take a look.