24 Hour Clock Converter: How to Convert AM/PM to 24 Hour Time
https://www.freecodecamp.org/news/mathematics-converting-am-pm-to-24-hour-clock/
WebJan 23, 2020 · Converting from a 24 Hour to a 12 Hour Clock. Starting from the first hour of the day (0:00 / midnight to 0:59), add 12 hours and AM to the time: 0:30 = 12:30 AM. 0:55 = 12:55 AM. From 1:00 to 11:59, simply add AM to the time: 2:25 = 2:25 AM. 9:30 = 9:30 AM. For times between 12:00 to 12:59, just add PM to the time: 12:15 = 12:15 PM.
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