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Thread: AM and PM

  1. Stefanie
    Guest
    #1

    AM and PM

    I was wondering if you could help me with the correct grammar for AM and PM. Is is a.m., p.m. or AM, PM, or is it A.M., P.M.

    I have looked on many sites, but everyone uses something different, so i was wondering what is the correct way.

    Thank-you

  2. Casiopea's Avatar

    • Join Date: Sep 2003
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    #2

    Re: AM and PM

    a.m. and p.m. are abbreviations of temporal relationships:

    ante meridiem (before noon): a.m. (OK)
    post meridiem (after noon): p.m. (OK)

    If A.M. and P.M. were proper names, e.g. United States / U.S., then they'd be acceptable, but since *Ante Meridiem and *Post Meridiem are not proper names, they shouldn't be capitalized.

    A.M. (Not OK)
    P.M. (Not OK)

    Lastly, without the periods, AM, PM, am, pm are all incorrect. All the Aa's and the Pp's and the Mm's stand for a word, and if you're going to abbreviate a word, you need to use a period, e.g., abbreviate => abbrev.; ante meridiem => a.m. and post meridiem => p.m.

    AM (Not OK)
    PM (Not OK)
    am (Not OK)
    pm (Not OK)

  3. chjakhan
    Guest
    #3

    Re: AM and PM

    Well done dear Moderator
    You have explained it in a fine way.

  4. Casiopea's Avatar

    • Join Date: Sep 2003
    • Posts: 12,970
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    #4

    Re: AM and PM

    Quote Originally Posted by chjakhan
    Well done dear Moderator
    You have explained it in a fine way.
    Thank you.

    Welcome

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