Biden claims he was at Ground Zero the day after the 9-11 attack, his book says otherwise

Joe Biden claimed he was at New York's World Trade Center the day after the Sept. 11 terrorist attacks. However, his autobiography says he was actually in Washington, D.C.

The president appeared to have another confusion episode during his speech commemorating the Sept. 11 al-Qaeda terrorist attack. Biden said he was at Ground Zero in New York City the day after the attacks and saw the rubble of the World Trade Center.

"Ground Zero in New York - I remember standing there the next day and looking at the building. I felt like I was looking through the gates of Hell, it looked so devastating because the way you could - from where you could stand," he said.

Shortly after, the president also said he could see the fireball that caused the plane to crash into the Pentagon in northern Virginia from Washington's Union Station.

However, the president's speech contradicts his own autobiography, which claims that Biden arrived in Washington D.C. on the morning of September 11, 2001, after the Pentagon was hit by a plane.

"I could see a brown haze of smoke hanging in the otherwise crystal-clear sky beyond the Capitol dome," the book states, according to the New York Post. The text also reports that the president returned to the Capitol on September 12, 2001.

Biden reportedly did not visit Ground Zero until a week after the attack, when he joined a delegation of senators traveling by train.