Former Vice President, Joe Biden, is now president-elect, after reaching 270 electoral votes.

But he's not moving into the White House yet. So, here's when he officially becomes President of the USA and when Donald Trump leaves the position.

When does Joe Biden become president?

Current POTUS, Donald Trump, already said he's going to challenge the election's results. Regardless, from now until January 2021, we're in the transition period.

Expect to see Joe Biden and Kamala Harris inaugurated on January 20, 2021, at noon. The new president and vice-president take an oath of office administered by the Supreme Court chief justice.

According to the Constitution, if a president dies or resigns, the Vice President is sworn in as soon as possible.

What is the presidential transition?

Everything between now and January 20 is the presidential transition. The newly elected president gathers around a group of people who will help Biden-Harris take over the White House.

Joe Biden has spent months preparing the transition team, and last week he launched a website about it.

Despite the efforts of Donald Trump, there's almost no possibility that anything will challenge the process. Legal experts already said that the lawsuits are unlikely to change the voting results.

Kamala Harris will be the first female Vice president, while Joe Biden spent eight years in this position.

Harris will not live, only work in the White House, while it's expected that Joe Biden and his wife will officially move up to three days after January 20. During those three days, they will change the furniture and do all the touch-ups they need to turn the White House into a home.

There are 132 rooms and 35 bathrooms in the residence alone. It will be exciting times for the States since Biden-Harris also won the popular vote.