Joe Biden has arrived at the US Capitol in Washington, where he will be sworn in as 46th US President just before 17:00 GMT.
Vice- President-elect Kamala Harris will take the oath of office alongside him-the first woman to hold that position
The pair started their day with a church service at the Cathedral of St Matthew in Washington.
Some 25,000 troops will guard the inauguration ceremony after a deadly riot at the Capitol earlier this month.
Donald and Melania Trump leave the White House for the last time, boarding the Marine One helicopter
The outgoing president speaks at a military send –off at Joint Base Andrews before flying to his resort in Florida.
Trump will not attend his successor’s inauguration-only the fourth president not to do so.
In the final hours of his presidency Trump pardoned 73 people, including his former adviser Steve Bannon.
But he did not issue pre-emptive pardons for himself or family members
Guests start to arrive
Guests are beginning to arrive in advance of the inauguration ceremonies at the US Capitol.
The crowd is a thinner this year as the guest list has been limited due to Covid.
Among those seen making their way in are former President Barack Obama and former First Lady Michelle Obama, and Georgia Senator-elect Jon Ossoff, who is expected to be sworn in later today.
Former US President Barack Obama, and former First lady Michele Obama arrive for the inauguration
Texas Senator Ted Cruz wears a mask that reads "Come and Take It" as he arrives at the Capitol
Georgia Senator-elect Jon Ossof
Hawaii Senator Mazie Hirono arrives at the West Front of the US Capitol