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I know that AM/PM is for ante/post meridiem, but what is it actually called? Meridian indicator? 12 hour indicator? Something way more clever?

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up vote 16 down vote accepted


Oddly enough, this question seems to already have been answered at StackOverflow. The distinction is called the period.


As for the actual meanings of AM/PM, they come from the Latin "ante meridiem" ("before noon") and "post meridiem" ("after noon").

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ha! wtf... why would that be asked on SO? anyways, thanks! – Jason Jul 22 '11 at 22:44
any comment on 'ante-meridian'? – Mitch Apr 1 '13 at 4:20
@Jason: Because SO isn't as fascistic as ELU as far as question filtration is concerned – Armen Ծիրունյան Jun 3 '13 at 16:36
@Jason, because software developers think about naming variables properly. It is built into the Object-Oriented mindset. Jader, a commenter, said it well: "It's funny that the question intrinsically is not programming related, but all programmers can understand why you posted it here." – rajah9 Jun 3 '13 at 16:51
@rajah9 this is actually why i asked this question in the first place ;) – Jason Jan 7 '14 at 18:34

protected by Community Jun 3 '13 at 16:37

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