<span>Horario de incio</span>
                    @Html.DropDownListFor(m => m.HorarioInicial, Model.HorariosDisponiveisCadastro.Where(h => h <= new DateTime(1900, 01, 01, 12, 00, 00))
                    .Select(s => new SelectListItem() { Value = s.ToString("HH:mm"), Text = s.ToString("HH:mm") }), new { @class = "form-control", onchange = "changeHoraFim(this);" })

                    <br />
                    <span>Horario de fim</span>
                    @Html.DropDownListFor(m => m.HorarioFinal, Model.HorariosDisponiveisCadastro.Where(a => a > Convert.ToDateTime(Model.HorarioInicial))
                    .Select(s => new SelectListItem() { Value = s.ToString("HH:mm"), Text = s.ToString("HH:mm") }), new { @class = "form-control" })