United States Naval Observatory Tour
14:23
Restoring Lowell Observatory's Clark Refractor
5:59
Where Does Kamala Harris Live? Inside the Vice President's House (Naval Observatory)
25:37
The Bloody Lane | Antietam Battlefield Tour | Antietam 162
17:58
THE U.S. NAVAL OBSERVATORY ATOMIC CLOCK DETERMINATION OF TIME & LOCATION 78394
8:15
Inside The White House With President Joe Biden
6:14
Where Time Comes From
5:42
Decorating Number One Observatory Circle
9:46