Atomic - Radio Control

The US Government operates the world's most accurate clock, the atomic clock in Colorado. This atomic clock is the standard reference for the correct time. The time is broadcasted 24 hours a day via a low frequency radio signal.
When the sun goes down, the earth's upper atmosphere reflects these radio waves, allowing the signal to reach all continental US locations and most of North America. Radio controlled clocks receive this signal through an antenna, and decode the signal through an internal computer, synchronizing themselves each night.

We also have AutoSet Clocks which automatically self adjust for daylight saving time by "springing ahead" and "falling back" by themselves. You'll never have to set your clock again!