That conversion for output is something you do in your code. Any formatting of how the date is spoken on output is up to your code to do. If you're using JavaScript, the moment library can be useful. If you want to keep your code tight and memory usage low, read up on the Date object.
For a little help in doing it correctly, check out the last section of the beginner Cake Time tutorial, which explains how to get the time zone of the device, so your date math is accurate.
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