The iPhone Home screen allows quick access to your favorite applications and features such as the time. The Clock icon appears on the first page of the Home screen by default. You have the option to move it if you wish for it to appear in another location on the Home screen.
Press the "Home" button located on the bottom front of your iPhone.
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Tap and hold the "Clock" icon from the Home screen until the icons begin to shake. This indicates that you are free to move the icons.
Tap and drag the "Clock" icon to the desired located on the Home screen.
Press the "Home" button to save your changes.