AMAM

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time of day, elapsed time". Resources of the Language Portal of Canada. 22 October 2020 . Retrieved 27 January 2023. The abbreviation 'AM' stands for Ante Meridiem, which means it is the time before the meridian line has crossed the Sun, or, the time between midnight and 11.59 in the morning. PM stands for Post-Meridiem, which means it is the time after the meridian line has crossed the Sun, or, the time between noon and 11.59 at night. When abbreviations and phrases are omitted, one may rely on sentence context and societal norms to reduce ambiguity. For example, if one commutes to work at "9:00", 9:00a.m. may be implied, but if a social dance is scheduled to begin at "9:00", it may begin at 9:00p.m. a b c d e f These styles are ambiguous with respect to whether midnight is at the start or end of each day. The American Heritage Dictionary of the English Language states "By convention, 12AM denotes midnight and 12PM denotes noon. Because of the potential for confusion, it is advisable to use 12 noon and 12 midnight." [31]

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. [15] In older English, it was common for the number 25 to be expressed as "five-and-twenty". [18] In this way the time 8:35 may be phrased as "five-and-twenty to 9", [19] although this styling fell out of fashion in the later part of the 1900s and is now rarely used. [20]Richards, E. G. (1999). Mapping Time: the Calendar and its History. Oxford University Press. p.289. The Latin abbreviations a.m. and p.m. (often written "am" and "pm", "AM" and "PM", or "A.M." and "P.M.") are used in English and Spanish. [12] The equivalents in Greek are π.μ. and μ.μ., respectively, and in Sinhala පෙ.ව. ( pe.va.) for පෙරවරු ( peravaru, පෙර pera – fore, pre) and ප.ව. ( pa.va.) for පස්වරු ( pasvaru, පස්සේ passē – after, post). However, noon is rarely abbreviated in any of these languages, noon normally being written in full. In Portuguese, there are two official options and many others used, for example, using 21:45, 21h45 or 21h45min (official ones) or 21:45 or 9:45p.m. In Irish, a.m. and i.n. are used, standing for ar maidin ("in the morning") and iarnóin ("afternoon") respectively. The Tongue and Quill (PDF). US Air Force. 27 May 2015. p.356. Archived from the original (PDF) on 26 November 2020 . Retrieved 26 October 2021. Air Force Handbook 33-337.

Minutes may be expressed as an exact number of minutes past the hour specifying the time of day (e.g., 6:32p.m. is "six thirty-two"). Additionally, when expressing the time using the "past (after)" or "to (before)" formula, it is conventional to choose the number of minutes below 30 (e.g., 6:32p.m. is conventionally "twenty-eight minutes to seven" rather than "thirty-two minutes past six").Fifteen minutes is often called a quarter hour, and thirty minutes is often known as a half hour. For example, 5:15 can be phrased "(a) quarter past five" or "five-fifteen"; 5:30 can be "half past five", "five-thirty" or simply "half five". The time 8:45 may be spoken as "eight forty-five" or "(a) quarter to nine". [17]

Addington, Susan (25 August 2016). "Modular Arithmetic". Archived from the original on 4 July 2008 . Retrieved 28 November 2008.GPO Style Manual. 2016. p.236". govinfo.gov. 12 January 2017. Archived from the original on 17 March 2018 . Retrieved 16 March 2018.