While the iPhone and iPad default to a 12 hour clock in the United States and Canada, it’s easy enough to switch them to a 24-hour clock, (you may know this as military time), through a quick settings change.
Just do as follows:
That’s all you need to do.
The change takes effect immediately and affects all iOS system clocks including the time display on the lock screen.
Thanks to OS X Daily for this tip. Be sure to visit their site for more helpful tips.
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