All over New York, preachers armed with T-shirts, brochures, books and posters are preaching the end of the world.
Using a complex numerical calculation from the Bible, there are even advertisements on the New York city subway warning of the 'great earthquake' that accompanies the advent of Judgement Day.
"According to the Bible, in the Book of Revelations there will be a worldwide earthquake," Manny, a preacher said. "We're not sure if it will happen at the same time everywhere, because times are different.
A group walks the streets of New York telling people that the world will end tomorrow
But it is supposed to happen simultaneously around the world," said the 56-year old from the Dominican Republic.
The date of May 21, 2011 may seem random, but it is based on a numerical analysis by Harold Camping, the president of Family Radio, a religious broadcaster based in California.
"According to Genesis, when the flood occurred in the year 4990, God told Noah that in seven days he would destroy the earth," Manny explained.
"And he destroyed it in seven days. But Peter said, "I know that one day for me is like a thousand years.' So 4990 plus 7001 years (the equivalent of seven days) equals 2011," he explained.
Not only that, May 21 coincides with the 17th day of the second month of the calendar used during the Biblical flood, according to Camping.
Nearby the corner where Manny is prophesying,others are handing out leaflets and explaining to anyone who will listen that they have a few hours left to find salvation.
"Right now there is still salvation, but when May 21st comes, the salvation program is finished.
God will shut the door and after that only five months remain for the unsaved of the world, and they're gonna be suffering and on the 21st October, God will destroy this world with fire," Borce said.