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Atomic timekeeping technology enables clock movements to automatically set themselves, and spring forward and fall back when the Daylight Saving Time change occurs twice a year.
How does it work? Check out our top FAQs on Atomic Timekeeping:
Answer: An atomic (or radio controlled) quartz clock movement contains a receiver that obtains a 60-kilohertz, low frequency AM radio signal from the WWVB that is maintained by the National Institute of Standards and Technology (NIST) in Fort Collins, Colorado. These signals adjust the time display to the correct time. Atomic clock movements generally receive the radio controlled signal from NIST between 11 a.m. and 1 p.m., and from 11 p.m. to 1 a.m. – depending on your time zone.
Answer: The NIST’s WWVB radio controlled signal can be obtained by our atomic clock movements within the continental United States and parts of Canada and Mexico.
Answer: Atomic clock movements and atomic clocks will automatically adjust for Daylight Saving Time (DST) when they receive the signal from the NIST’s WWVB station. When your atomic timepiece receives the signal for the time change, the hour and minute hands will advance clockwise to the correct time for spring or fall. DST typically occurs at 2 a.m., but your timepiece may need additional time to receive the signal and adjust accordingly. It may take 24-48 hours to update to the correct time.
Answer: When setting our atomic clock movement, a DST switch can be located on the back of the clock movement. You have the option to turning the DST on/off. To turn off the DST option, slide the switch to the “off” position. When the DST is set to “on”, the unit will automatically adjust for daylight saving time.
Answer: If your atomic clock movement has not received the atomic signal for the DST, check the following:
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