ante meridiem and post meridiem

[MsNyree]

What is the correct way to write ante meridiem and post meridiem? I see 3p.m. and 3pm. Are both ways correct? I just want to be sure which way is the correct way to write.

 

[billmcd]

Use the periods (.) with or without caps. I prefer caps.

 

[bhaisahab]

Use the periods (.) with or without caps. I prefer caps.

Yes, but with a space after 3.

 

[emsr2d2]

Yes, but with a space after 3.

See the official Greenwich Meantime website:

http://wwp.greenwichmeantime.com/info/noon.htm

 

[euncu]

See the official Greenwich Meantime website:

AM and PM

I think, Jack Bauer disagrees with the official Greenwich Meantime website.

Imageshack - 12pml.jpg

Imageshack - 12amj.jpg

 

[2006]

I think, Jack Bauer disagrees with the official Greenwich Meantime website.

http://img72.imageshack.us/i/12amj.jpg/

I don't know if it's an official site or not, but whoever wrote that is quite off the mark.

 

[Raymott]

You might notice that even the greenwichmeantime site gets it wrong some of the time:
"It is after Noon that P.M. starts e.g. 00:00:01 PM (12:00:01)"
They are also inconsistent with capitals:
"Abbreviation a.m."
"Abbreviation p.m."

 

[2006]

You might notice that even the greenwichmeantime site gets it wrong some of the time:
"It is after Noon that P.M. starts e.g. 00:00:01 PM (12:00:01)"
They are also inconsistent with capitals:
"Abbreviation a.m."
"Abbreviation p.m."

Actually p.m. starts at exactly 12 noon and a.m. starts at exactly 12 midnight. There is no time that isn't either a.m. or p.m.