This article describes how to manually edit the time and date.
INSTRUCTIONS & INFO
From the home screen, tap the Settings icon. 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.
Scroll to, then tap Date & time.
If turned on, tap Automatic date & time to turn off.
Tap Set date.
Scroll to the desired date. Tap OK.
Tap Set time.
Scroll to the desired time. Tap OK.
To change the hour format, tap Use 24 hour format.