issues with digital clock changing its time. no longer shows correct time

This just started recently. the time on the clock has been acting weird. it changes drastically to another time not even close to what its supposed to be. I update the time on it and I have done this several times since this issue started and each time when I go start the truck in the morning to go to work, the time is way off.
any one had this issue.

The battery is good and no issues with it. I have no problems with the radio. its just the clock loosing its time. the clock is not dim as some has mentioned.

 

^Wut

 

THis has happened like 10 times already. we update the time on it and then it might stay correct for a few days and then something happens and its showing the wrong time.

 

Loose battery terminal?

 

I will check the battery terminal today. that could be the issue.

 

I checked the battery terminal and its tight and good. I updated the time on the clock yesterday and its still correct time this morning. but probably will change soon