speech - How should one say times aloud in 24-hour notation?


A couple years ago, I switched all my personal clocks 24-hour notation. I live in the US, and 24-hour time is used very, very rarely. So, I haven't been able to listen to anyone say times aloud.


Here's my question: What is the proper way to say a time aloud in 24-hour notation?


"Fifteen o'clock" sounds bad to me. I think I like "Fifteen hours" best, but it sounds a little formal.


"Fifteen twenty-two" sounds okay to me, but still strange.


Is there a 'best practice' here?



Answer



The armed services (and their veterans) really have this engrained in my mind as such:



Rendezvous at 0600 [O-Six-Hundred] hours!


Drop point is X degrees north, at 1200 [Twelve-Hundred] hours!



Otherwise, where more precise in terms of declaring minutes, you can just split them and speak each unit of time individually:



Your meeting is at 1530 [Fifteen-Thirty] hours.


Your meeting is at 1812 [Eighteen-Twelve] hours.



The hours here, it might be argued, is redundant or even inaccurate, but that doesn't dictate the occurrences (or exclusion of such) in speech.


You could go the quarter to, half past route, but this is an interchangeable method of speaking time, not exclusive to verbalising time in its 24-hours form.


Since o'clock is an abbreviation of of the clock, I guess that technically you could speak in this manner in terms of 24-hours, such as: 15 o'clock. But this might sound a little peculiar to most. If we look at the definition of o'clock from TheFreeDictionary then it kind of indicates we would be playing it safer to use another form:




  1. Of or according to the clock: three o'clock.


  2. According to an imaginary clock dial with the observer at the center and 12 o'clock considered as straight ahead in horizontal position or straight up in vertical position. Used to indicate relative position: enemy planes at 10 o'clock.




  3. used after a number from one to twelve to indicate the hour of the day or night



  4. (Mathematics & Measurements / Navigation) used after a number to indicate direction or position relative to the observer, twelve o'clock being directly ahead or overhead and other positions being obtained by comparisons with a clock face



If we do decide to use the 24 o'clock approach, then it's just redundant, if nothing else; consider the note on relativity to the face / direction. Since, regardless of the numbers being bigger, we don't have to (necessarily) do any extra laps around the clock face to arrive at the specified location - but in cases where AM and PM might not be clearly implied, it could serve to do that.


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