Jeep Cherokee 2018 Owner's Manual page 305

Clock
After pressing the "Clock" button on the touch-
screen, the following settings will be available:
NOTE:
The "Set Time Hours" feature will allow you to adjust the hours. The "Sync time with GPS" button on the touchscreen must be unchecked.
NOTE:
The "Set Time Minutes" feature will allow you to adjust the minutes. The "Sync time with GPS" button on the touchscreen must be unchecked.
Show Time in Status Bar — If Equipped
302
Setting Name
Sync Time With GPS
Set Time Hours
Set Time Minutes
Time Format
Selectable Options
+
+
12hrs 24hrs
-
-