Date and Time Settings
You can set the date and time. Select [Date and Time] > [Date and Time Settings].
You can manually set the year, month, day, hour, and minute (and AM and PM when using the 12-hour clock). When you set the time, the clock will start from the minute you set, at 0 seconds.
Set Using Internet
If you set a checkmark in [Set Automatically], date and time information is automatically acquired from the Internet and set when you sign in to PlayStation™Network. If you want to set the date and time immediately, select [Set Now].