said by youtoo :I am going to go out on a limb here and bet that att has chosen to use Zulu as the standard time reporting on their network devices and they have the expectation that the customer equipment will have the ability to recognize and adjust the time accordingly. I'm not willing to hold my breath that you will get the time changed in the RG.
I don't believe this is the case because many users, myself included, don't have this problem. I have only been a few reported cases of this so like some of the earlier posters it seems like a corrupt or incorrect configuration file.