c# conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value

Hi can you please help on this exception. I am putting together a C# asp.net MVC site. One of the models is SystemUser as shown here

public class SystemUser : DefaultModel
{
    public int Id { get; set; }

    [Required]
    [StringLength(50, ErrorMessage = "First name cannot be longer than 50 characters.")]
    [Column("FirstName")]
    [Display(Name = "First Name")]
    public string FirstName { get; set; }

    [Required]
    [StringLength(50)]
    [Display(Name = "Last Name")]
    public string LastName { get; set; }

    [Display(Name = "Full Name")]
    public string Name
    {
        get
        {
            return string.Format("{0},{1}", this.FirstName, this.LastName);
        }
    }

    [DataType(DataType.Date)]
    [DisplayFormat(DataFormatString = "{0:dd-MM-yyyy}", ApplyFormatInEditMode = true)]
    [Display(Name = "Hire Date")]
    public DateTime HireDate { get; set; }

    [Required]
    public int inactive { get; set; }

    public virtual ApplicationUser User { get; set;  }

    public string ApplicationUserId { get; set; }

}

The SQL DB table def looks like this

CREATE TABLE [dbo].[SystemUser] (
[Id]                INT            IDENTITY (1, 1) NOT NULL,
[LastName]          NVARCHAR (50)  NOT NULL,
[FirstName]         NVARCHAR (50)  NOT NULL,
[HireDate]          DATETIME       NULL,
[inactive]          INT            NOT NULL,
[ApplicationUserId] NVARCHAR (128) NULL,
[CreatedDate]       DATETIME       DEFAULT (getdate()) NOT NULL,
[UpdatedDate]       DATETIME       DEFAULT (getdate()) NOT NULL,
[UpdatedUserId]     INT            DEFAULT ((0)) NOT NULL,
CONSTRAINT [PK_dbo.SystemUser] PRIMARY KEY CLUSTERED ([Id] ASC),
CONSTRAINT [FK_dbo.Person_dbo.AspNetUsers_ApplicationUserId] FOREIGN KEY ([ApplicationUserId]) REFERENCES [dbo].[AspNetUsers] ([Id])
);


GO
CREATE NONCLUSTERED INDEX [IX_ApplicationUserId]
ON [dbo].[SystemUser]([ApplicationUserId] ASC);

When using the registration page on the site, the credentials are processed in the default AccountController. I have modified this to also create a SystemUser by adding four lines of code in the Register method as shown here.

if (result.Succeeded)
            {
                var db = new ApplicationDbContext();
                var systemUser = new SystemUser { FirstName = model.FirstName, LastName = model.LastName, inactive = 0, ApplicationUserId = user.Id, HireDate = DateTime.Now };
                db.SystemUsers.Add(systemUser);
                db.SaveChanges();

When I run process the registration, the record is inserted into the AspNetUsers table ok, then I receive an exception on the db.SaveChages(); call as follows,

The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value. The statement has been terminated.

Line 160:                    var systemUser = new SystemUser { FirstName =  model.FirstName, LastName = model.LastName, inactive = 0, ApplicationUserId = user.Id, HireDate = DateTime.Now };
Line 161:                    db.SystemUsers.Add(systemUser);
Line 162:                    db.SaveChanges();
Line 163:
Line 164:                    await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);

Thanks in advance for any help on this.