Reference
Information
Astronomy
Boats
Burgees
Celestial Navigation
Chandleries
Flags
Nav Rules
Navigation
Quick References
Racing
Radios
Tides & Currents
Time
US Coast Guard
US CG Auxiliary
Weather
Yacht Clubs
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Time
Here are some links to references
concerning time.
Atomic Time with Java Clock
Atomic Clock Time
WWV - Denver Time Signal
WWVH - Hawaii Time Signal
Time Zone Map
NIST Time and Frequency Division
Computer Time Synchronization
Time and Frequency Standards
Daylight Savings in US & Europe
Why Have Daylight Savings Time
Our Time Standard
NIST-F1, the nation's primary time and frequency standard, is a cesium fountain atomic clock developed at the NIST laboratories in Boulder, Colorado. NIST-F1 contributes to the international group of atomic clocks that define Coordinated Universal Time (UTC), the official world time. Because NIST-F1 is among the most accurate clocks in the world, it makes UTC more accurate than ever before.
The uncertainty of NIST-F1 is less than 2 x 10-15, which means it would neither gain nor lose a second in 20 million years! It is approximately three times more accurate than NIST-7, a cesium beam atomic clock that served as the United State's primary time and frequency standard from 1993-1999.
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