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You probably say it every day when talking about the time (a fascinating topic) but do you know actually what AM and PM stands for?
AM obviously refers to the period in the morning, and PM the afternoon - but there is a lot more to it than that - allow us to explain.
The 12-hour clock was developed from the second millennium BC and reached its modern form in the 16th century AD.
And AM and PM, used in this 12-hour clock, stems from the Latin language, just like many words and phrases in the English language.
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AM is short for a Latin phrase, “ante meridiem” (or “before midday”), while PM is short for “post meridiem” (or “after midday”).
So now you know you can impress all your friends.
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