The National Watch & Clock Museum, 514 Poplar St., Columbia, has announced that a world-renowned clock is now on display.

Known as Burgess Clock B, it earned a spot in Guinness World Records in 2015 as the most accurate mechanical clock with a pendulum swinging in free air. During a 100-day trial at the Royal Observatory in Greenwich, England, the clock kept time to within a second throughout the entire test.

Additionally, the museum has announced that it will be open an additional day each week - Sundays from 10 a.m. to 4 p.m. - throughout the summer. The museum is run by the National Association of Watch & Clock Collectors (NAWCC), a nonprofit member organization dedicated to preserving and promoting the art and science of timekeeping.

The National Watch & Clock Museum houses approximately 13,000 timepieces. The museum has recently updated and expanded several of its displays, including the Public Time gallery, the Hamilton and Bulova exhibits, and the history of wristwatches exhibit.

The museum will be open to the public Tuesdays through Sundays from 10 a.m. to 4 p.m. throughout the summer. For more information, visit https://museum.nawcc.org or call 717-684-8261.