What is USNO Master Clock?

What is USNO Master Clock?

The USNO Master Clock is the underlying product for all of our precise time and time interval products. The timing reference produced by this timing ensemble is called UTC(USNO). This timing reference is mandated to be the precise time reference for all of the DoD.

What happened to usno website?

This US Naval Observatory Website is undergoing modernization and will be offline starting Thursday, 24 October 2019. The expected completion of work and return of service is estimated to occur in the 4th quarter of 2021.

What is the telephone number to get the time?

The U.S. Naval Observatory’s time-by-phone line received more than three million calls in 2015. Quick, try this: Dial 202-762-1401. Trust us, it’s not a scam, but you may be surprised by what you hear. That’s the number for the time-by-phone service offered by the U.S. Naval Observatory.

Can you still call time?

(Call 202-762-1401 today, and you’ll hear a pleasant ticking sound followed by the announcement of the exact time, delivered in an old-timey-broadcasting voice.) Not only does it still exist, but people still use it.

Where is the master clock?

The U.S. Naval Observatory Alternate Master Clock (USNO AMC) is located at Schriever Air Force Base near Colorado Springs, Colorado, on the same site as the Global Positioning System (GPS) Master Control Station.

Is there a telescope at the Naval Observatory?

The USNO 26-inch “Great Equatorial” refracting telescope is located on the grounds of the Observatory at Washington, DC and is included as part of the Monday night tour when skies are cloudy. Today, the telescope is used on every clear night to measure the astrometric parameters of double stars.

What do they do at the Naval Observatory?

The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce positioning, navigation and timing for the United States Navy and the United States Department of Defense.