A transfer of power will take place on Inauguration Day when President-elect Donald Trump is sworn in for his second term in office and President Joe Biden's term ends. But what exactly happens on Inauguration Day?

Donald Trump is making an astonishing return to the White House today when he will be sworn in as the 47th president of the United States.The inauguration, taking place at the US Capitol Rotunda buildings due to the cold weather,

Every president since Ronald Reagan has left a note for his successor, and President Biden could be the first to write a letter to someone who is both his successor and the predecessor who left a note for him.

Thousands of Americans have flocked to US capital Washington DC, braving conditions that have chased the ceremony indoors, to watch Donald Trump become the 47th President

Donald Trump will be sworn in as president Monday, returning to power to enact his sweeping vision of America after leaving his office in shame four years ago.

For the third time in U.S. history, Martin Luther King Jr. Day and Inauguration Day will both be held on the same day.

On his final day in office, President Joe Biden pardoned five people, including a prominent civil rights activist who died in the 1940s and the speaker of the Virginia House.

Before his oath-taking ceremony Trump is expected to have morning tea after a service at St John’s Episcopal Church with outgoing president Joe Biden. A former farewell will be carried out for Joe Biden and Kamala Harris later in the day. Chief Justice John Roberts will administer the presidential oath to Donald Trump.

NBC will have live coverage of Trump’s inauguration on Jan. 20. Starting at 7 a.m. ET, TODAY will be broadcasting live from Washington, D.C., with Savannah Guthrie, Craig Melvin and Al Roker anchoring live.

Recently, pop stars including Beyoncé and Lady Gaga have sung at presidential inaugurations, but it wasn’t always a platform for chart-topping performers.

"Trump is sui generis," one veteran Republican pollster told ABC News. "He is a unique figure in American politics."