January 21, 1972 videotape of WWV time signal (shortwave radio) https://www.youtube.com/watch?fbclid=IwAR0IuSpYXmBeec5mL429BrTapnbveve0fPYCX0t-FILQot6PIEZCCgm3VqA&v=tP42qAiEY5I&feature=youtu.be Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to print (Opens in new window) Print Related