Kamala Harris

From the guest list to Covid-19 changes, to new security concerns, here's everything you need to know about the big day.

The inauguration is the formal ceremony that marks the start of a new presidency, and it takes place in Washington DC.

The only required feature is that the president-elect recite the presidential oath of office: "I do solemnly swear that I will faithfully execute the Office of President of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States."

"The Biden-Harris ticket represents something historic," Time tweeted.

The Democratic pair beat three other finalists: frontline healthcare workers and Dr Anthony Fauci, the racial justice movement, and President Donald Trump, who lost the White House race.

Time has been choosing the year's most influential person since 1927.

The social network removed the content after BBC News alerted it to three groups that regularly hosted hateful material on their pages.

Facebook says it takes down 90% of hate speech before it is flagged.

One media monitoring body described the pages as "dedicated to propagating racist and misogynistic smears".

However, despite the pages being places where hate-speech is regularly directed towards the vice-president-elect, Facebook said it would not take action on the groups themselves.

Once a rival for the top job, the California senator of Indian-Jamaican heritage had long been considered the front-runner for the number two slot.

The former California attorney general has been urging police reform amid nationwide anti-racism protests.

Mr Biden will face President Donald Trump in the election on 3 November.

At a White House news conference on Tuesday, Mr Trump, a Republican, described Ms Harris as "my number one draft pick".

Ms Harris will debate Mr Trump's running mate, Vice-President Mike Pence, on 7 October in Salt Lake City, Utah.