Justices of the U.S. Supreme Court pose during their formal group photograph in the East Conference Room of the Supreme Court in Washington, D.C., on Nov, 30, 2018. Photo: Andrew Harrer/Bloomberg

The U.S. Supreme Court's private conference, where the justices meet to discuss pending cases, occurred Friday in a new world, where personal interaction—"judicial" handshakes included—is avoided.

The justices met Friday—some remotely, by telephone—for their private conference in which they comb through petitions and other matters. But this time, the justices had decided to suspend, temporarily, their traditional handshakes with each other.

A court spokesperson said the justices are feeling healthy and embracing measures to minimize personal interaction.

March's argument session, including the dispute over President Donald Trump's financial records, has been postponed indefinitely. Still, the court is expected to continue to release orders in pending cases and opinions. New rulings in argued cases could come early next week.

Federal and state authorities have advised against handshakes, as one measure to help stop the spread of the novel coronavirus. More than 15,000 people in the United States have contracted the virus. As a New York Times headline put it recently: "The Handshake Is on Hold."

The "Judicial Handshake" at the Supreme Court has been a tradition since the days of Chief Justice Melville W. Fuller in the late 19th century, according to the court. When the justices assemble to go on the bench each day and at the beginning of the private conferences, each justice shakes hands with each of the other eight. Fuller instituted the practice as a reminder that differences of opinion on the court did not preclude overall harmony of purpose.

The justices' handshakes also became a popular math problem for school students: How many handshakes will result if nine Supreme Court justices each shake hands with each other?

"36 of them to be exact," Justice Ruth Bader Ginsburg once remarked.

"As we enter the robing room or the adjacent conference room, we shake hands, each justice with every other," Ginsburg said in 2009. "Every day the court hears arguments, and every day we meet to discuss cases, we lunch together in the justices' dining room. The room is elegant, but the lunch is not haute cuisine. It comes from the court's public cafeteria, the same fare available to anyone who visits the court."

And then there was Justice Sandra day O'Connor's "secret" handshake following her first conference meeting. As Evan Thomas, author of "First", recounts: "On her first day, O'Connor grasped the meat-hook hand of Justice Byron 'Whizzer' White, who had led the National Football League in rushing for the Detroit Lions. 'It was like I had put my hand in a vise,' recalled O'Connor. 'He just kept the pressure on and tears squirted from my eyes.' After that, O'Connor made sure to shake White's thumb."

The handshake has long been a routine part of the proceedings in the U.S. Court of Appeals for the Fourth Circuit, where the judges, after argument, leave the bench and greet the advocates who'd just made their cases. "The Fourth Circuit is one that values still its traditions, its civility, its continuity, and its commitment to equal justice under law," the court says.

The Richmond, Virginia-based appeals court recently postponed a week's worth of arguments amid the widening pandemic.

Other trial and appellate courts are adjusting to a new normal, as scheduled proceedings are heard by telephone instead of in person. The D.C. Circuit's first go-around with telephonic arguments Friday was a "mess."

Read more:

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'It's Kind of a Mess': Phone Arguments Get Rocky Debut at DC Circuit Amid Pandemic

'Be Kind' During the Pandemic, and That's a Court Order

For Supreme Court Advocates, Virus-Era Delays Pose 'Stay Fresh' Challenge