My Camera keeps asking me for the date and time every time I turn it on How do i stop this?

The problem may well be the fact that the camera has an internal battery to hold the time and date. If the camera is used infrequently, those normally discharge. Try putting a freshly charged main battery in the camera and leaving it with the power switch off for 24 hours, then set the date and time to see if it holds. If not, it probably needs a new internal battery or servicing.

Press the m button during shooting or playback to display the setup menu. The setup menu provides access to a variety of camera settings, including options not listed in the function menu, display options, and the time and date. Once you have the date and time set it should stop asking.