You can set your phone to update the time, date, and time zone automatically. Automatic update is a network service and may not be available depending on your region or network service provider.
Tap Settings > System > Date & time.
Switch Use network-provided time on.
Switch Automatic time zone on.
Promijenite sat na 24-satni format
Dodirnite Postavke > Sustav > Datum i vrijeme i uključite Koristi 24-satni format.