From: Rob Biedenharn <Rob@...>
Date: 2007-12-20T06:34:55+09:00
Subject: Re: Basic date/time question.

On Dec 19, 2007, at 4:28 PM, Jean-nicolas Jolivet wrote:

> I'm trying to calculate a period of time; basically each month is
> divided in 2 periods, from the 1st of the month to the 15th is  
> period1,
> and from the 16th to the last day of the month is period2...
>
> Now my problem is that..I'm not sure if midnight (00:00:00) is
> considered the "end " of the current day, or the "start" of the next
> day...
>
> So for example; is December 15th, midnight (00:00:00) considered the
> very start of December 15th, or the very end of it?
>
> Basically, I'm not sure as to where a "day" starts and ends?
> (ex: from 00:00:00 to 11:59:59?  or from 00:00:01 to 00:00:00  etc..)
>
> Any help would be appreciated.. I know it might sound a bit  
> confusing, I
> can try to explain it better...
> -- 


Midnight is the START of the day.

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com