Mayor Levar M. Stoney, one of Richmond’s most eligible bachelors, is about to hear wedding bells.

An Instagram post shows him proposing to his girlfriend, Brandy Washington, in Libby Hill Park at sunset on Tuesday, a special day better known as 2-22-22, a numeric palindrome because it reads the same forward and backward.

The next 2-22-22 will occur in 100 years. But the phe- nomenon of it falling on a Tuesday – and becoming known as “Twosday”—will not happen again for another 400 years, in 2422, experts said.

Mayor Stoney, 40, chose the rare, special day to get down on one knee and pop the question. She said “yes.”

The photo of the momentous moment, which also captured the panoramic backdrop of the city, was posted Wednesday on social media and had garnered more than 3,300 likes and lots of congratulatory messages by evening.

It will be a second marriage for the mayor, who has been discreet about his personal life during his tenure as the city’s leader, a post he has held since 2017.

A Richmond Free Press photograph of Mayor Stoney and Ms. Washington riding on the back of a convertible classic Mustang in the Armstrong-Walker Classic Legacy parade on Nov. 27 is one of the first public appearances of the couple.

They also attended the inauguration of Gov. Glenn A. Youngkin together on Jan. 15. And earlier this month, Mayor Stoney posted a podcast on The Cheats Movement in which he indicated the pair had been in a relationship for a year and that he was no longer available.

Ms. Washington, 33, is the daughter of the late Ira Payne Washington Jr., a former educator at Henderson Middle School, where for nearly 50 years he taught and served as an assistant principal, and Jo Anne Washington, a retired City of Richmond employee.

She has worked for Altria for more than eight years and currently is associate manager of regulatory strategy. She also serves on the company’s diversity panel and chairs the Development Committee of Altria’s Black Employee Resource Group, where she leads initiatives to build and provide resources to enhance the company’s diversity and leadership pipeline.

A graduate of Randolph-Macon College who earned a master’s degree from the University of Richmond, Ms. Washington also serves on the board of HomeAgain, a homeless services provider.

Details of when and where the couple plans to marry have not been disclosed.