How do I set time on my KX-T7730

Most Panasonic systems set the time from the phone plugged into the first jack and either via a program switch on the cabinet or the phone.

If you have a TA system, you can program the time from the phone connected to jack 01 (usually ext 101) by pressing PROGRAM 0 and dial YYMMDDwHHMMa STORE where the time is in 12 hour format, the w is day of the week, with Sunday being 0 and a is 0 for AM or 1 for PM.

Carl