Error: String was not recognized as valid DateTime [closed]

I'm trying to convert a string that I pull from the database with the

DateTime PrevisaoDataInicio = DateTime.Parse(reader["PrevisaoDataInicio"].ToString())

And gives the following error:

  

String was not recognized as a valid DateTime.

The entire method where it is being used is below:

private List<EntendimentoDominio> TransformaReaderEmListaDeObjeto(SqlCeDataReader reader)
    {
        var entendimentos = new List<EntendimentoDominio>();
        while (reader.Read())
        {
            var temObjeto = new EntendimentoDominio()
            {
                CodEntendimento = int.Parse(reader["CodEntendimento"].ToString()),
                AreaResponsavel = reader["AreaResponsavel"].ToString(),
                Modulo = reader["Modulo"].ToString(),
                Projeto = reader["Projeto"].ToString(),
                Subprojeto = reader["Subprojeto"].ToString(),
                DescricaoResumida = reader["DescricaoResumida"].ToString(),
                DescricaoDetalhada = reader["DescricaoDetalhada"].ToString(),
                CustoEstimado = reader["CustoEstimado"].ToString(),
                NomeDocumentoAnexo = reader["NomeDocumentoAnexo"].ToString(),
                CaminhoDocumentoAnexo = reader["CaminhoDocumentoAnexo"].ToString(),
                Status = reader["Status"].ToString(),
                TempoEstimado = reader["TempoEstimado"].ToString(),
                PrevisaoDataInicio = DateTime.Parse(reader["PrevisaoDataInicio"].ToString()),
                PrevisaoDataFinal = DateTime.Parse(reader["PrevisaoDataFinal"].ToString())
            };

            entendimentos.Add(temObjeto);
        }

        reader.Close();
        return entendimentos;
    }