I have recently purchased a dish network model 942 that I am using for OTA. this unit is hooked to my dish and antenna and works fine for OTA, except I am located in the Central daylight zone and this receiver was previously used in the Eastern time zone. The receiver is on EST. I have read the instruction book from cover to cover and nowhere can I find how to reset the time to CST. I have also tried rebooting several times. Can anyone tell how or if I can reset the time?