On this date in history:

(2021) American Democratic politician Kamala Harris became the first woman to serve as vice president of the United States as she took the oath of office. (2009) On this day in 2009, Barack Obama was sworn in as the 44th president of the United States, becoming the first African American to hold the office. (1993) Belgian-born actress Audrey Hepburn—who created unforgettable film roles as the epitome of sophistication and glamour while paradoxically bewitching audiences and critics with her sprightly mannerisms and elfin charm—died in Switzerland. (1981) The Iran hostage crisis ended when Ayatollah Ruhollah Khomeini released 52 Americans who had been held hostage for 15 months. (1961) U.S. President John F. Kennedy, in his inaugural address, said, “And so, my fellow Americans: ask not what your country can do for you—ask what you can do for your country.” (1945) U.S. President  Franklin D. Roosevelt was inaugurated for an unprecedented fourth term in office. (1930) American  astronaut Buzz Aldrin was born in Montclair, New Jersey. (1801) U.S. President John Adams  nominated John Marshall to be chief justice of the Supreme Court of the United States. (1778) British explorer James Cook landed at Waimea, on Kauai island, becoming the first European to visit Hawaii.