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Time calculation

Posted on 2001-06-20
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Last Modified: 2010-04-06
Hi,  
How can I calculate how many minutes between now and 5 pm the same day ?
Thanks
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Question by:frdep
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LVL 13

Accepted Solution

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Epsylon earned 400 total points
ID: 6211264
Try this:


var date1, date2, diffdate: TDateTime;
   difftime: TTime;
   hour , min, sec, msec: Word;
   ndays: Integer;
begin
 date1 := Date + EncodeTime(17, 0, 0, 0);
 date2 := Now;
 diffdate := date2 - date1;
 ndays := Trunc(diffdate);
 difftime := diffdate - ndays;
 DecodeTime(difftime, hour, min, sec, msec);
 hour := hour + ndays * 24;
 ShowMessage(IntToStr(hour) + ' hours, ' + IntToStr(min) + ' minutes ' + IntToStr(sec) + ' seconds')
end;
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LVL 13

Expert Comment

by:Epsylon
ID: 6211314
If you only need the minutes you can use this:

date1 := Date + EncodeTime(17, 0, 0, 0);
date2 := Now;
ShowMessage(IntToStr(Trunc(Abs(date2 - date1) * 24 * 60)));
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