The key moments of Donald Trump's inauguration day

Donald Trump has been sworn in as the 45th President of the United States.

The sun rises over the US Capitol on the National MallPHOTO: The sun rises over the US Capitol on the National Mall before US President-elect Donald Trump is to be sworn in. (Reuters: James Lawler Duggan)

President-elect Donald Trump and his wife Melania arrive for a church servicePHOTO: President-elect Donald Trump and his wife Melania arrive for a church service at St John's Episcopal Church. (AP Photo: Alex Brandon)

Donald Trump and Barack ObamaPHOTO: President Barack Obama and first lady Michelle Obama met with President-elect Donald Trump and his wife Melania Trump before the swearing-in. (AP Photo: Evan Vucci)

President Obama invited the Trumps to the White House for tea before the incoming and outgoing presidents travel to the swearing-in ceremony together.

President Barack Obama and President-elect Donald Trump's motorcade drives down Pennsylvania AvenuePHOTO: President Barack Obama and President-elect Donald Trump's motorcade drives down Pennsylvania Avenue on the way to the swearing-in ceremony. (AP Photo: Susan Walsh)

Former Sen. Hillary Clinton and former President Bill ClintonPHOTO: Former Sen. Hillary Clinton and former President Bill Clinton arrive on the West Front of the U.S. Capitol. (AP: Win McNamee)

Hillary Clinton tweeted "I'm here today to honor our democracy & its enduring values. I will never stop believing in our country & its future."

Donald Trump supporters gather in the National MallPHOTO: Donald Trump supporters gather in the National Mall (Reuters: Shannon Stapleton)

President-elect Donald Trump arrives on Capitol HillPHOTO: President-elect Donald Trump arrives on Capitol Hill. (AP: Doug Mills)

President-elect Donald Trump pumps his fist as he arrives for his Presidential InaugurationPHOTO: President-elect Donald Trump pumps his fist as he arrives. (AP: Patrick Semansky)

Donald Trump shakes hands with President Barack Obama before the 58th presidential inaugurationPHOTO: President-elect Donald Trump shakes hands with President Barack Obama. (AP: Patrick Semansky)

Finally the time came for Donald Trump to step forward and take the oath of office, with Chief Justice John Roberts swearing in him and his Vice-President, Mike Pence.

Mike Pence takes the oath of officePHOTO: Vice-President Mike Pence takes his oath of office. (AP: Matt Rourke)

Donald Trump is sworn in as the 45th president of the United StatesPHOTO: Donald Trump is sworn in as the 45th President of the United States. (AP: Andrew Harnik)

President Trump then stepped up to the lectern to deliver his inaugural address. He made a bunch of wide ranging promises during the 16 minute speech.

Crowds watch as President Donald Trump delivers his inaugural address.PHOTO: Crowds watch as President Donald Trump delivers his inaugural address. (Reuters: Ricky Carioti)

President Donald Trump delivers his inaugural addressPHOTO: Donald Trump used his first presidential address to promise to make America great again. (AP: Patrick Semansky)

U.S. President Donald Trump acknowledges the crowdPHOTO: U.S. President Donald Trump acknowledges the crowd. (Reuters: Saul Loeb)

President Donald Trump waves after delivering his inaugural addressPHOTO: Introducing … President Trump. (AP: Patrick Semansky)

It was then time for Barack Obama and Joe Biden to leave the Capitol. The new President and Vice-President followed tradition and escorted their predecessors to Marine One.

Barack Obama leaves the CapitolPHOTO: Former President Barack Obama waves from a helicopter as President Donald Trump walks with wife Melania Trump back to the Capitol Building. (AP: John Angelillo)

President Donald Trump formally signs his cabinet nominations into lawPHOTO: President Donald Trump is joined by the Congressional leadership and his family as he formally signs his cabinet nominations into law. (AP: J. Scott Applewhite)

US President Donald Trump and first lady Melania at the inaugural luncheonPHOTO: US President Donald Trump and first lady Melania attend the Inaugural luncheon. (Reuters: Yuri Gripas )

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