Similar Questions for How Do You Change The Time On A Panasonic Kx-t7730 from Yahoo AnswersQuestionAnswer
Isn't that a great phone?
Click the center button. This will take you to the menu.
Scroll over (move the center button right) until you get to the clock.
Press the center button to select the date and time.
It's a feature code. From ext. 10 or 11 you need to press feature then the code, I can't remember it, maybe 82. Check the internet for the code. By the way, you probably lost all programming in the system too, i.e, speeddials and ringing etc.