The second inauguration of Ronald Reagan as president of the United States was the 50th inauguration, marking the commencement of his second and final four-year term as president and of George H. W. Bush as vice president. A private swearing-in ceremony took place on Sunday, January 20, 1985, at the White House, followed by a public inauguration ceremony on Monday, January 21, 1985, at the Capitol's rotunda. At 73 years, 349 days of age on Inauguration Day, Reagan was the oldest U.S. president to be inaugurated until Joe Biden's inauguration in 2021, at the age of 78 years, 61 days.