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What Do A.M. and P.M. Stand For?

We use these abbreviations all the time, but what do they actually mean? Plus more common phrases and their origins.

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What Do A.M. and P.M. Stand For?

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    What Do A.M. and P.M. Stand For?

    What Do A.M. and P.M. Stand For?

    Many parts of the world use a 24-hour clock — instead of 1 o'clock in the afternoon, someone in Turkey or Brazil might tell you it's 13:00 hours. But …

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