"P.M." stands for the Latin phrase "post meridiem," which means "after midday." 🕒 This is used in the 12-hour clock system to signify the time period from noon to midnight. Now, if we dive a little deeper, it becomes even more interesting - the 12-hour system itself is actually quite old and has its roots in ancient civilizations. They used to divide the daylight period into 12 parts, which varied in length according to the seasons. It wasn't until much later, with the advent of mechanical clocks, that these hours were fixed equal length. Isn't it fascinating how timekeeping has evolved? 🕰️
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