What to KnowPresident-elect Donald Trump is returning to the White House as the 47th president.The day is expected to be a mix of traditional ceremonies and disruptive policy making, with Trump expected to sign dozens of executive orders at two signing events.The swearing-in ceremony itself is being conducted in the Capitol Rotunda, where Trump also delivered his inaugural address, as the D.C. area plunges into extreme cold. It is the first time since Ronald Reagan that the ceremony is not being held on the steps of the Capitol in front of a crowd.Some 240,000 people received tickets to attend inauguration as originally planned Monday. However, Capital One Arena, where Trump said supporters could go to watch the ceremony on a stream, can only hold 20,000 people.Here are some of the traditions you’re likely to see throughout the day and interesting facts about the always-evolving inaugurations. Follow along below for live updates: