What is The Sept. 23 Nibiru doomsday theory?

Doomsday theories have, nowadays, exited suspense novels and entered news sections. During the Maya Calender prophecy scare of 2012, some people spent millions of dollars in survival kits and Noah's arks, only to be greeted with an anti-climactic silence on December 21, the supposed doomsday.

Four years later, September 23, 2017, has been pegged as the day the world will be destroyed. Imaginary planet Nibiru is supposedly going to hit Earth and blow it up, bringing an end to our great civilisation, according to Christian numerologist David Meade's YouTube video. Meade has also authored a book titled "Planet X: the 2017 Arrival."

Meade claims that the Great Pyramid of Giza has clues about the impending doomsday; so does the Great Sign of Revelation 12.

"It is very strange indeed that both the Great Sign of Revelation 12 and the Great Pyramid of Giza both point us to one precise moment in time – September 20 to 23, 2017. Is this the end of the Church Age and the transition to the Day of the Lord? There couldn't be two greater witnesses," he said.

The Bible passage Isaiah, Chapter 13 9-10, says, "See, the Day of the Lord is coming – a cruel day, with wrath and fierce anger – to make the land desolate and destroy the sinners within it. The Stars of Heaven and their constellations will not show their light. The rising sun will be darkened and the Moon will not give its light."

Another conspiracy theory by the same person and for the same day states that September 23 marks the beginning of the Biblical Rapture and the second arrival of Christ.

"Jesus lived for 33 years. The name Elohim, which is the name of God to the Jews, was mentioned 33 times [in the Bible]," Meade stated to The Washington Post. "It's a very biblically significant, numerologically significant number. I'm talking astronomy. I'm talking the Bible ... and merging the two."

However, NASA has rubbished all conspiracy theories, saying that they are internet hoax. David Meade, too, seems to be changing his mind at the last moment. Apparently, there is a good chance we won't all die in one day.

"The world is not ending, but the world as we know it is ending," he was quoted saying by The Washington Post. "A major part of the world will not be the same the beginning of October." He now thinks that September 23 will mark the beginning of a series of horrific events around the world in the coming few weeks. How many of us do you think will survive?