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  2. 12-hour clock - Wikipedia

    en.wikipedia.org/wiki/12-hour_clock

    Some style guides suggest the use of a space between the number and the a.m. or p.m. abbreviation. [citation needed] Style guides recommend not using a.m. and p.m. without a time preceding it. [17] The hour/minute separator varies between countries: some use a colon, others use a period (full stop), [15] and still others use the letter h.

  3. What Do AM and PM Stand For? - AOL

    www.aol.com/am-pm-stand-153002424.html

    If the answer to the question “What do AM and PM mean” surprised you, find out the answer to “What does P.S. stand for.” Sources: Dictionary.com: “What Do “a.m.” And “p.m.” Stand ...

  4. List of Latin abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_Latin_abbreviations

    p.m. post meridiem "after midday" Used on the twelve-hour clock to indicate times after 12 midday. Example: "We will meet the mayor at 2:00 p.m." (14:00 in 24-hour clock) p.m.a. post mortem auctoris "after the author's death" p.p. per pro. per procurationem "through the agency of" PRN pro re nata "for the thing born"

  5. Military designation of days and hours - Wikipedia

    en.wikipedia.org/wiki/Military_designation_of...

    (NATO). The "D" may stand for "Day". [3] E-Day The unnamed day on which a NATO exercise commences. (NATO) F-Hour The effective time of announcement by the U.S. Secretary of Defense to the Military Departments of a decision to mobilize Reserve units. (US) G-Day The unnamed day on which an order, normally national, is given to deploy a unit ...

  6. OK, What Do 'A.M.' and 'P.M.' Actually Stand For? - AOL

    www.aol.com/lifestyle/ok-m-p-m-actually...

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  7. PM - Wikipedia

    en.wikipedia.org/wiki/PM

    PM or pm (also written P.M. or p.m.) is an abbreviation for Latin post meridiem, meaning "after midday" in the 12-hour clock. PM or Pm or pm may also refer to:

  8. Acronym vs. Abbreviation vs. Initialism: What’s the Difference?

    www.aol.com/acronym-vs-abbreviation-difference...

    You’ll be able to tell the difference between acronym examples, texting abbreviations, and common initialisms going forward. After this, don’t forget to brush up on what P.S. stands for .

  9. The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.