The historic countdown clock by the NASA News Center at the agency’s Kennedy Space Center in Florida on Friday, April 18, 2025, displays a graphic commemorating the 250th anniversary of Paul Revere’s midnight ride. The display is part of an initiative for all federal agencies to place two lights in a window as a symbol of the two lanterns placed in the steeple of Boston’s Old North Church used to signal to Revere and William Dawes to begin the famous midnight ride warning fellow minutemen in the Province of Massachusetts Bay that British soldiers were coming by sea.