function SetTime(DateTime:TDateTime): boolean;
var
  st: TSystemTime;
  ZoneTime: TTimeZoneInformation;
begin
  GetTimeZoneInformation(ZoneTime);
  DateTime:=DateTime+ZoneTime.Bias/1440;
  with st do
  begin
    DecodeDate(DateTime, wYear, wMonth, wDay);
    DecodeTime(DateTime, wHour, wMinute, wSecond, wMilliseconds);
  end;
  Result:=SetSystemTime(st);
end;