surely there in difference between "time" and "date"
....the questioner wanted to know how set date and not time.
aqlwan
October 2012
Press on "Program" button, then on "Mute" then on "6" and enter time (for example for 9:24 AM enter 0924). You can also press "#' to select AM PM or 24 hour format. Press "Program" again to save.
Martin
March 2011
You can download a manual from www.panasonic.com
T
January 2010
I can answer this question...
How can I set date on my Panasonic KX-T2375 phone?