Question

How can I hide time (hour, minutes and sec) in TChart component?
Need only Date format.

Set

Chart1.BottomAxis.DateTimeFormat := GetLocaleShortDateFormat(); {MMM/yy/dd}, 

but time is present in chart

Answer 1

An example how to use TeeChart.

Add a TChart component and a TButton on a form, include unit Series and add this code on the button OnClick event:

procedure TForm1.Button1Click(Sender: TObject);
var
  S1: TLineSeries;
  i,j: integer;
begin
  Chart1.View3D := false;
  Chart1.SeriesList.Clear;
  S1 := TLineSeries.Create(Self);
  S1.XValues.DateTime := True;  
  Chart1.BottomAxis.DateTimeFormat := 'MMM/YY/DD';  //Works with 'MMM/yy/dd' also
  Chart1.AddSeries(S1);
  for i := 0 to 10 do
    for j := 0 TO 23 do
    S1.AddXY(Trunc(Now) + i + j/24.0, Random(100)/10.0 + i*10.0);
end;

And this is the result:

I could not reproduce the behaviour in the question, with different settings of the DateTimeFormat.