Ambient Weather Support

With the models listed below, the clock attempts to synchronize to the radio controlled time at the following times:

2:00 am,  8:00 am, 2:00 pm and 8:00 pm.

The Radio Controlled Clock (RCC) is a shortwave signal originating near Fort Collins, Colorado, and travels thousands of miles by bouncing off the ionosphere. The signal is better at night due to solar interference during the daytime. The farther you are from Colorado, the weaker the signal. Urban environments can also effect the signal strength.

Thus, you may only receive the signal once a night, or once every few days, which is sufficient for keeping accurate time.

If the RCC synchronization only occurs at night (say 2:00 am), you may not be aware, because the synchronization may fail at 2:00 pm due to solar and other interference.

One option is to be viewing the clock between 2:00 am and 8:00 am to see if the clock set at night.

If your clock is keeping accurate time but does not synchronize 100% of the time, this is normal.