A Rare Black Moon Will Occur in the Sky on Friday Night

A rare lunar event known as a "Black Moon" will occur this week on Friday, Sept. 30 at 8:11 p.m. Eastern standard time. A Black Moon refers to when there is a second new moon in one month (usually there is just one per month). What is a new moon, you ask?

According to Nature World News, a new moon is when the earth-facing side of the moon is in full shadow. Basically, a new moon is invisible to the human eye. Because the moon's dark side is facing us, however, the sky will be extra dark and ideal for stargazing.

There is typically one full moon and one new moon each month. reports that having two new moons in one month only happens roughly every 32 months. The last one we had was in March of 2014. So, Black Moons are kind of a big deal.

Interestingly enough, only the western hemisphere can experience this upcoming Black Moon, as it will technically occur in October for the Eastern hemisphere.

So, set your clocks and head out this Friday to see the Black Moon in action. The next time one will occur for us to see won't be until 2019, according to Accuweather.

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A Rare Black Moon Will Occur in the Sky on Friday Night