A lunar spectacle, called the Black Moon, is all set to unfold in the September night sky on Friday. However, some fear that this could mean the end of days Bible warns about.

This rare occurrence is not visible to the naked eye and will turn the Western Hemisphere sky absolutely dark, as second new moon takes birth. Caused by moon's unique position when its illuminated side is caught in the Earth's shadow, it becomes completely invisible to the eyes, thus the name.

Black moon is when a new moon appears twice in a month. Even though there is nothing much to see in the night sky during this time, some conspiracy theorists are claiming it be the day of worldwide destruction and the Second coming of Jesus.

A Facebook user posted a status, "We are approaching the end of our world and the end of life on Earth for all human being."

As if the fear of the world's end wasn't enough, the news about Black Moon just amplified things and made it worst for the devout believers.

According to a conspiracy theorist, these signs announce the coming of Jesus Christ and that we are approaching the end of the world. Early September, a ring of Fire Eclipse was noted around the moon that gave birth to speculation, "The Lord will make the moon turn red as blood ... and turn black. Sounds familiar?"

Despite the fear and trepidation by devout Christians, scientists explain that there is nothing to worry about. They explain that the Earth will carry on after the Black Moon, just like before.

Joe Rao from Space.com explained: "A second full moon in a single calendar month is sometimes called a blue moon.

"A black moon is supposedly the flip side of a blue moon - the second new moon in a single calendar month."

Black Moon will occur on Friday, September 30 at 1.11am in Western Hemisphere.