Преобразование даты в неделю
procedure TForm1.Button1Click(Sender:  TObject);
var  frstDay,toDay : TDateTime;  week :  Integer;
begin
 
frstDay := StrToDate('1/1/96');
 toDay := StrToDate(Edit1.Text);
 week := Trunc((toDay - frsont color=blue>1;
 Label1.Caption := IntToStr(week);
end; 	