Question

What is the correct format of time of the day (o’clock, Ante Meridiem, PM stands for Post Meridiem)?

Answer 1

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Alternatively, the 24-hour clock system may be used - 12:00 and 24:00 (or 00:00) respectively. The abbreviation am stands for ante-meridiem (before the Sun has crossed the meridian line) and pm stands for post-meridiem (after the Sun has crossed the meridian line).