Donald Trump's presidential inauguration is scheduled to begin at noon ET. According to the U.S. Constitution's 20th Amendment, each presidential inauguration should take place Jan. 20, unless that date falls on a Sunday. Then, the president takes the oath of office in private Jan. 20, and the public event is moved to Jan. 21.

Trump’s second inauguration, the 60th U.S. presidential inauguration, will be held on Monday, Jan. 20, on the western side of the U.S. Capitol Building.

On Jan. 20, Donald Trump will reclaim the most powerful seat in our nation's government. HuffPost will continue to fearlessly report on the new administration — but we need your help. We believe vital information during this unprecedented time should be free for everyone. With your support, we can provide critical news without paywalls.