Hope this helps.. to set the time on a Panasonic KXT 2375. (might be same as your 2365)
1 - Press PROGRAM.
2 - Press MUTE.
3 - Press "6".
4 - enter 4 digits for current time and hour.
e.g 9.15 am would be 0915.
5 - Press # repeatedly to choose either am, pm, or 24hr.
6 - Press PROGRAM.
Hope that helps... cheers.
Chris J, November 2006