uses ComObj, DateUtils;

procedure TForm1.Button1Click(Sender: TObject);
var
  XmlHttp: Variant;
  datetxt : String;
  DateLst : TStringList;
  mon: String;
  timeGMT,GetNetTime:TDateTime;
begin
    XmlHttp := CreateOleObject('Microsoft.XMLHTTP');
    XmlHttp.Open( 'Get', 'http://www.baidu.com/', False);
    XmlHttp.send; 
    datetxt :=XmlHttp.getResponseHeader('Date');
    datetxt := Copy(datetxt,Pos(',',datetxt)+1,100);
    datetxt := StringReplace(datetxt,'GMT','',[]);
    datetxt := Trim(datetxt);
    DateLst := TStringList.Create;
    while Pos(' ',datetxt)>0 do
    begin
        DateLst.Add(Copy(datetxt,1,Pos(' ',datetxt)-1)) ;
        datetxt := Copy(datetxt,Pos(' ',datetxt)+1,100);
    end ;
    DateLst.Add(datetxt) ; 
    if DateLst[1] = 'Jan' then
        mon := '01'
    else if DateLst[1] = 'Feb' then
        mon := '02' 
    else if DateLst[1] = 'Mar' then
        mon := '03'
    else if DateLst[1] = 'Apr' then
        mon := '04'
    else if DateLst[1] = 'Mar' then
        mon := '05' 
    else if DateLst[1] = 'Jun' then
        mon := '06'
    else if DateLst[1] = 'Jul' then
        mon := '07'
    else if DateLst[1] = 'Aug' then
        mon := '08'
    else if DateLst[1] = 'Sep' then
        mon := '09'
    else if DateLst[1] = 'Oct' then
        mon := '10'
    else if DateLst[1] = 'Nov' then
        mon := '11'
    else if DateLst[1] = 'Dec' then
        mon := '12' ; 
    timeGMT := StrToDateTime(DateLst[2]+'-'+mon+'-'+DateLst[0]+' '+ DateLst[3]);
    GetNetTime := IncHour(TimeGMT,8); 
    self.Caption := FormatDateTime('yyyy年mm月dd日 HH:NN:SS',GetNetTime) ;
end;