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  2. 12-hour clock - Wikipedia

    en.wikipedia.org/wiki/12-hour_clock

    Although "12 m." was suggested as a way to indicate noon, this is seldom done [30] and also does not resolve the question of how to indicate midnight. The American Heritage Dictionary of the English Language states "By convention, 12 AM denotes midnight and 12 PM denotes noon.

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

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

    The AM/PM system actually does have a specific abbreviation for noon—just the letter “M,” short for “meridiem,” which would come after “12” and only refer to noon. Haven’t heard of it?

  4. Abbrev. [1]Meaning [1] Latin (or Neo-Latin) origin [1]; a.c. before meals: a.d., ad, AD right ear auris dextra a.m., am, AM morning: ante meridiem: nocte every night ...

  5. List of medical abbreviations: Q - Wikipedia

    en.wikipedia.org/wiki/List_of_medical...

    q.AM: every day before noon (from Latin quaque die ante meridiem) q.d. every day (from Latin quaque die) q.d.s. four times each day (from Latin quater die sumendus) q.h. each hour (from Latin quaque hora) q.h.s. every bedtime (from Latin quaque hora somni) q.i.d. four times each day (from Latin quater in die)

  6. 35 Text Abbreviations You Should Know (and How to Use Them) - AOL

    www.aol.com/lifestyle/35-text-abbreviations-know...

    Basic texting abbreviations 8. BC. In texting terms, the second and third letters of the alphabet don’t refer to the time “before Christ.” “BC” is short for “because.”

  7. List of time zone abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_time_zone...

    This page was last edited on 7 February 2025, at 08:51 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  8. What SOS Stands For and Where It Came From - AOL

    www.aol.com/sos-abbreviation-actually-means...

    The letters SOS have been used as a code for emergency since 1905. But what does SOS mean exactly? The post What SOS Stands For and Where It Came From appeared first on Reader's Digest.

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