On this day, Jan. 20 …

2017: Donald J. Trump is sworn in as the 45th president of the United States, pledging emphatically to empower America’s “forgotten men and women.”

Also on this day:

1649: King Charles I of England goes on trial, accused of high treason. (He would be found guilty and executed by month’s end).

King Charles I of England goes on trial, accused of high treason. (He would be found guilty and executed by month’s end). 1887: The U.S. Senate approves an agreement to lease Pearl Harbor in Hawaii as a naval base.

The U.S. Senate approves an agreement to lease Pearl Harbor in Hawaii as a naval base. 1937: President Franklin D. Roosevelt becomes the first chief executive to be inaugurated on Jan. 20 instead of March 4.

President Franklin D. Roosevelt becomes the first chief executive to be inaugurated on Jan. 20 instead of March 4. 1942: Nazi officials hold the notorious Wannsee conference, during which they arrive at their “final solution” that calls for exterminating Europe’s Jews.

Nazi officials hold the notorious Wannsee conference, during which they arrive at their “final solution” that calls for exterminating Europe’s Jews. 1964: Capitol Records release the album “Meet the Beatles!”

1981: Iran releases 52 Americans it held hostage for 444 days, minutes after the presidency passes from Jimmy Carter to Ronald Reagan.