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TO SELECT TIME ZONE 

 
Slide the "Time Zone" switch to display the desired time zone: 

 

EST (Eastern Standard Time) 

 

CST (Central Standard Time) 

 

MST (Mountain Standard Time) 

 

PST (Pacific Standard Time) 

 

Alaska (Alaska Standard time) 

 

Hawaii (Hawaii-Aluetion Standard Time) 

 
Note:  The Atomic feature will not work in Alaska and Hawaii due to the extreme 
distance from the NIST tower in Colorado. 

 
TO TURN ON/OFF the Daylight-Saving Time

 

 
Slide the "DST" switch to the "ON" position except when the clock is used in areas 
where DST is not applicable i.e. Part of Arizona and Indiana. The DST icon will be 
visible on the front display indicating that DST is ON. 
 

 
TO SET TIME, CALENDAR, 12/24

 

HR TIME DISPLAY FORMAT

 

 
When the WWVB time has not updated your clock, you can adjust the time and calendar 
manually. 
 

1.

 

Press and hold SET for 2 seconds, time digits blink Press + / - to set your 
desired time. Press and hold + /

 

- will accelerate setting in fast speed. 

2.

 

Press SET again, time digits change to year digits, press + /

 

- to set the year. 

3.

 

Press SET again, upper month and date digits blink, press + /

 

- to set month 

and date. 

4.

 

Press SET again, time digits change to 12 Hr and blink, press + / - to select 12 
Hr or 24 Hr. military time. PM will appear in 12 Hr time format. 

5.

 

Press SET to return to the normal time display. The clock returns to the 
normal time display if no other button is pressed for 5 seconds. 

 

TO SELECT DEGREE °C OR °F TEMPERATURE READOUT 

 
Press °C /°F button to select degree °C or °F temperature readout. 
 

TO START ATOMIC RECEPTION MANUALLY 

 
Press + / WAVE button to start the WWVB atomic reception manually. The tower icon 
will blink. If the tower icon is scrolling, your clock is actively searching for the WWVB 
time code. 
 

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