Justice Ginsburg, 86, was in Buffalo on Monday to receive an honorary degree. She is scheduled to be in North Little Rock, Ark., on Tuesday. Demand for tickets was so high that the event was moved to a sports arena with a capacity of about 18,000.

Nina Totenberg, the NPR correspondent who interviewed Justice Ginsburg on Saturday, said there were another 16,000 people on the waiting list for her appearance in Arkansas.

Over the next three weeks, Justice Ginsburg will also appear in Raleigh, N.C., Chicago, twice in New York and again in Washington.

The appearances tend to follow a pattern: a standing ovation from an adoring crowd, followed by questioning from a sympathetic interviewer. Justice Ginsburg tells nicely honed anecdotes about her earlier career as a feminist professor and litigator, her marriage, the Supreme Court and the law. She lands a couple of jokes. She describes her unlikely friendship with Justice Antonin Scalia, who died in 2016.

But the tone was a little different on Saturday in light of her recent medical setback.

“I love my job,” she said. “It has kept me going through four cancer bouts. Instead of concentrating on my aches and pains, I just know that I have to read a set of briefs and go over a draft opinion. Somehow, I have to surmount whatever is going on in my body and concentrate on the court’s work.”