Use Date & Time

1. Open Date & Time.
2. Set any of the following:

Clock: Under Time Format, tap 12 hour or 24 hour.

Network Time: Turn this on to have your device get the time from the network. If you turn it off, set the Date and Time under Set Date & Time.

Network Time Zone: Turn this on to have your device get the time zone from the network. Turn it off to choose the time zone yourself.

Time Zone: Tap the current time zone > search for a country or city > tap the location.