We recommend that you do not program this parameter.  Below is the reasons why:  

The year setting (e.g. 20XX) is the only parameter that requires manual setting.  However if you change this parameter, please keep in mind that it may reset often (e.g, go back to 2012).  This may happen because this is a line powered device, and it depends on the power available from your phone service (jack or modem).  

The year is not relevant for this device to block unwanted calls.  

The rest of the date/time information (month, day, and time (HH:MM:SS) is automatically updated by the incoming calls' caller id information on these call block devices.  

Please contact us if you have more questions.