When emphasizing an exact or precise time, the abbreviations “a.m.” and “p.m.” are used. These two abbreviations stand for the Latin terms “ante meridiem” and . “AM” stands for the Latin phrase Ante Meridiem —which means is still preferable to capitalize them, though the lower-case “am” and “pm” are. A day consists of twenty-four hours, but an analog clock consists of twelve hours. The term a.m. came into use to designate morning hours and the term p.m. to.
Because the initials in question are of Latin origin ("post meridian"/"ante meridian "), it makes sense to keep consistent with other Latin. Although you will find some books that tell you to capitalize the A.M. or P.M., doing so on an invitation is usually too overpowering to the rest of. I always thought that writing A.M. or a.m. or P.M. or p.m. was not the Did you notice the time stamps here - capital letters, no punctuation.
This question has been sent in by Susan McKenzie: A.M./P.M. - as a matter of style can it be ever ok to write as - AM/PM as follows: He set out at AM. Next up is the issue of capitalization. Do you capitalize both letters or make them both lowercase? If you're talking about AM and PM, you will. The abbreviations a.m. and p.m. come from the Latin phrases ante meridiem and post meridiem, meaning, respectively, “before noon” and. The words are not capitalized and whether to use a hyphen between You can write "a.m." and "p.m." as lowercase letters with periods after.