President Biden turns 80, making him the first octogenarian in the Oval Office

Had the Republicans won, the job would have gone to Iowa Sen. Charles E. Grassley, who is 89 and intent on proving his durability, after tweeting videos of himself making push-ups and running during the last campaign. Sen. Chuck Schumer of New York, the Democratic majority leader, is 71, while Sen. Mitch McConnell of Kentucky, the Republican minority leader, is 80.

It turns out that the Supreme Court of the United States, often considered a collection of alumni, has something of a youth movement. After several retirements and deaths, the four most recently confirmed judges are all still in their 50s. But if history is any guide, they’ll hang around for a while. The average age of a judge leaving the court is 81 and Justice Clarence Thomas, the lead member, is just 74.

Joseph Robinette Biden Jr. was born on November 20, 1942, the day the British Army captured Benghazi, Libya from the Nazis during World War II. America was still 18 months away from D-Day landings. Movies were still black and white, “Casablanca” was two months away from release, Bing Crosby was No. 1 in the charts, only about 5,000 households had televisions, the average income was $1,885, and male life expectancy was 64.7 years.

A total of 2.8 million Americans were born in 1942, a record for the time but not as high as the birth rate would rise during the postwar baby boom. Last year, 1.3 million people born in the United States who will turn 80 this year were still there, according to a Socialexplorer.com analysis of census data.

Paul McCartney, Harrison Ford, Calvin Klein, Barbra Streisand, Michael Bloomberg, Michael Eisner, Joy Behar and three members of the Beach boys.