|Date: ||Wed, 20 Mar 2002 10:12:08 -0700|
|Reply-To: ||Kenneth Moody <KennethMoody@FIRSTHEALTH.COM>|
|Sender: ||"SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>|
|From: ||Kenneth Moody <KennethMoody@FIRSTHEALTH.COM>|
|Subject: ||Re: is 12:00 AM noon or midnight ?|
|Content-Type: ||text/plain; charset=iso-8859-1|
The American Heritage Dictionary seems to capture the essence of this
>>> "Jeff Voeller" <c-Jeff.Voeller@WCOM.COM> 03/20/02 09:05AM >>>
"Are noon and midnight 12:00 a.m. or 12:00 p.m.?"
From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU]On Behalf Of
Sent: Wednesday, March 20, 2002 7:29 AM
Subject: Re: is 12:00 AM noon or midnight ?
And in relation to that: to which day (date) does the time moment of
24h belong? The day before or the day after? I would say 00h belongs to
day after and 24h to the day before, though they indicate the same time
the day. But how does SAS handle thiReceived: from SLCDOM-MTA by firsthealth.com
And knowing that in theory time is continuous and any exactly
moment (like 12h) does not occur, because it has a duration of 0, what
the practical minimum duration for SAS of any time of the day? What is
minimum measurement scale, how many time intervals are there for SAS at
Regards - Jim.
Y. (Jim) Groeneveld, MSc IMRO TRAMARKO tel. +31 412 407 070
senior statistician, P.O. Box 1 fax. +31 412 407 080
senior data manager 5350 AA BERGHEM IMRO TRAMARKO: a CRO
J.Groeneveld@ITGroups.com the Netherlands in clinical research
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> -----Original Message-----
> From: Peter Crawford [SMTP:peter.crawford@DB.COM]
> Sent: Wednesday, March 20, 2002 1:29 PM
> To: SAS-L@LISTSERV.UGA.EDU
> Subject: is 12:00 AM noon or midnight ?
> I was brought up to understand noon and midnight, so
> find the concept of 12am and 12pm very difficult !
> When asked the question:
> "when is 12:00 pm?"
> I had to resort to SAS (sad)...... and it produced this log
> 1 %put %sysfunc( putn( '12:00:00't, timeampm));
> 12:00:00 PM
> 2 %put %sysfunc( putn( '24:00:00't, timeampm));
> 12:00:00 AM
> Is this a standard convention ?
> Is it the same standard in different applications, eg M$-Office
> In French "midi et minuit" eliminates any confusion
> Have other languages a simple difinition for 12:00 AM ?
> When was any AM/PM standard for noon and midnight introduced ?
> awaiting your input with interest
> Peter Crawford
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