Biden and Harris won. What happens next?

By Nikhila Natarajan New York, Nov 8 : Just over 70 days remain between now and January 20, 2021 when America’s 46th President is sworn in.
Saturday, November 7, was headlined by television chyrons flashing ‘President-elect Biden’ with a check mark against his name. But the long, hard work of vote counting is still on. News networks call the race in America because there isn’t a national election body which does this. This feature of US presidential elections is both ritual and necessity.
US elections are run at the state level and there’s a long process ahead before the result is officially certified and a series of deadlines exist by which time the paperwork must be done.
First up is December 8 by which time any unresolved issues at the state level over vote counts and legal challenges must be resolved.
Next, the 538 member electoral college puts its official stamp on these results and gets them over to the US Congress.
On January 6, 2021, the US Congress holds a joint session where the current Vice President Mike Pence will formally announce the result of the presidential election.