A:Answer The time on your phone is set to Caller ID automatic, which means that it will follow the setting on the Caller ID service you have with your phone company. We can change that from the settings of your phone. On a handset, press MENU then the # key and then the number 226. Go to MANUAL and press SAVE. After that, you will need to change the time again on any of the handsets and it will not change back. Hope this helps! -M