You have deadlines to meet, a business to run and activities to do. When you’re depending on your alarm clock to wake you up on time, you’re going to want to make sure that your alarm clocks time is accurate.
The accuracy of time in the country is regulated by the US Naval Observatory’s Master Clock (USNO), the official source of time for the Department of Defense. When the power goes out and is later restored, you look to the USNO for the official time. The USNO uses Atomic Clock technology.
The most accurate clocks that are available today are called Atomic clocks. They keep time better than any other clock technology. When you need precision, there is no better choice than an atomic clock. Commercial Atomic clock technology is made possible by a radio system set up and operated by NIST — the National Institute of Standards and Technology, located in Boulder, Colorado. NIST operates radio station WWVB, which is the station that transmits the time codes used by atomic clocks.
Commercial Atomic clocks are radio controlled clocks that are tuned into a short-wave radio signal emitted by WWVB. They synchronize themselves a number of times daily to the exact hour, minute, second and date and automatically change themselves for Daylight Savings Time. Commercial Atomic alarm clocks are always accurate to second and are very easy to use. Simply insert the batteries, set your local time zone and let the clock do the rest. Your atomic alarm clock will automatically set the time and date for you, so there is no need to ever manually your alarm clock again.
Some alarm clocks have an automatic time setting system. As soon as you plug the alarm clock in the wall the clock automatically sets Itself to the correct time, day, month and year. To create this feature the alarm clock contains a very small and simple antenna and receiver to decode atomic clock radio signals and set the clock’s time accurately. All you have to do is set the time zone, and the alarm clock will display an accurate time.