Sharp Atomic Clock Spc373 User Manual High Quality May 2026

The clock defaults to Eastern Standard Time. You must manually select your time zone so the atomic signal displays the correct hour for your location.

This is almost always a setting issue. Refer to Section 2 to ensure you have selected the correct zone (P, M, C, or E). The atomic icon is missing or flashing. sharp atomic clock spc373 user manual

The signal is strongest at night. Place the clock near a window facing Colorado for the best results. The clock defaults to Eastern Standard Time

Finally, select your preference for and Daylight Savings Time (DST) on/off. 4. Setting the Alarm Press the ALARM button once to view the alarm time. Press and hold the ALARM button until the digits flash. Use the UP/DOWN buttons to set your desired wake-up time. Press ALARM to lock it in. Refer to Section 2 to ensure you have

The Sharp SPC373 Atomic Desktop Clock is a popular choice for those who want "set it and forget it" accuracy. Because it syncs with the National Institute of Standards and Technology (NIST) radio signal in Fort Collins, Colorado, it maintains split-second precision.

The clock attempts to sync every night at midnight. If it fails, it will try again an hour later. If it hasn't synced in days, try moving it to a different wall or closer to a window. The display is fading.