1. From the Home screen, tap Settings.
   Note: The device will automatically attempt to set the date and time from the network. This tutorial demonstrates how to manually set the date and time on your device.
   
2. Tap General.
   
3. Tap Date & Time.
   
4. Tap the Set Automatically switch to turn off.
   Note: It is recommended to use 'Set Automatically' if you are within network coverage.
   
5. Tap the date and time, then swipe up or down to set.
   
6. Tap the 24 hour switch to turn on or off.
   Note: Learn more from Apple support article: iOS: Troubleshooting issues with date and time