You can specify the display settings of a Personal Series LCD clock, including its time, date, and day display format. Display settings are configured from a clock's profile. You can also set the display of multiple clocks at the same time.
Go to Devices > Clocks.
From the list, select the Name link of the clock. Its profile is displayed.
Select Show Advanced Options.
Set its display settings.
Set its time to ether a 12 or 24-Hour format. By default, set to a 12 Hour format.
Set its date format to Month-Day or Day-Month. By default, set to Month-Day.
Show Day of the Week
Set if the day of the week is displayed. By default, set to Yes.
A switch on the side of the clock sets the backlight to ‘High’, ‘Low’, or ‘Off’. ‘High’ and ‘Low’. When set to ‘High’ or ‘Low’, an optical sensor on the top of the clock samples available light to determine whether to turn on the backlight.