problems inserting dates with EF Core 5

Question

I'm trying to insert records in my Concursos table by this entity

public class Concurso
{
    public int Id { get; set; }
    .....

    public DateTime FechaArchivo { get; set; }

    public DateTime FechaConsulta { get; set; }

    public DateTime FechaOrientativa { get; set; }

    public DateTime FechaInsercion { get; set; }
    ....
  }

 public int AddConcursos()
{
  _context.Concursos.AddRange(

    new Concurso { Id = 2077196, ...., FechaArchivo = new DateTime(2020,7,7), FechaOrientativa 
  = new DateTime(2021,7,7), FechaInsercion = new DateTime(2020,7,7),...
 );
  var dbResult = _context.SaveChanges();

  return dbResult;

}

But when I execute the method I get this error

any idea, please?

Thanks