He runs the Time Service Department at the US Naval Observatory, which keeps official time for the country. Without his department’s ultra-precise clocks, the Global Positioning System ...

COVINGTON: U.S. Naval Observatory Master Clock. At the tone, Eastern daylight time - 11 hours, 13 minutes exactly. CHESTER: So anyway, this is Fred Covington, and he passed away on July 28 of 1993.

CANBERRA, AUSTRALIA and LAS VEGAS, NV--(Marketwired - Sep 22, 2015) - TimeLoc is shown to be a hyper-accurate network synchronization technology which is 6 orders of magnitude more precise (i.e ...

On June 30, 2012, a “leap second” will be added to the world’s clocks at 23 hours, 59 minutes, 59 seconds Coordinated Universal Time (UTC). This corresponds to 7:59:59 p.m. Eastern Daylight ...

On December 31 this year, a 'leap second' will be added to the world's clocks at 23 hours, 59 minutes 59 seconds Coordinated Universal Time, the United States Naval Observatory has announced.

As we get ready to 'spring forward' in Atlanta, time is at the top of mind. Precise Time is kept in the U.S. by the Navy, at the U.S. Naval Observatory in Washington, D.C. The history of that ...

COVINGTON: U.S. Naval Observatory Master Clock. At the tone, Eastern daylight time - 11 hours, 13 minutes exactly. CHESTER: So anyway, this is Fred Covington, and he passed away on July 28 of 1993.

On December 31, 2005 a “leap second” will be added to the world’s clocks at 23 hours, 59 minutes and 59 seconds Coordinated Universal Time (UTC).

Filed under US, US Naval Observatory On June 30, 2012, a “leap second” will be added to the world’s clocks at 23 hours, 59 minutes, 59 seconds Coordinated Universal Time (UTC).

You know when you dial a number, and a man reads you the exact time at the tone? That precise timekeeping starts at the Naval Observatory in Washington, D.C. NPR's Linda Wertheimer takes a tour.