Date and Time

Set Manually Allows the user to set the year, month, day, hour, minute and second (and AM / PM setting if using a 12-hour time format) manually.
Set via Internet Connects to the Internet to automatically adjust date and time settings.

For details about connecting to the Internet, see (Network Settings) > [Infrastructure Mode].     

Hint

If (Settings) > (Theme Settings) > [Color] is set to [By Month], when you change the month setting under [Date and Time], the background color will change automatically.