DateTime error when updating rows using EF - sql-server-2008

Question

I have a method that gets an existing row from a table in my database and updates some values on it and then save those changes. The table in quesiton has these columns:
The code that does the updating is here:
public void Update(Accommodation accommodation, string code, int supplierId)
{
var existingAccommodation = Get(a => a.Code == code && a.SupplierId == supplierId);
DateTime now = DateTime.Now;
existingAccommodation.ModifiedDate = now;
existingAccommodation.Description = accommodation.Description;
existingAccommodation.Introduction = accommodation.Introduction;
existingAccommodation.Name = accommodation.Name;
existingAccommodation.Strapline = accommodation.Strapline;
existingAccommodation.Type = accommodation.Type;
existingAccommodation.Processed = true;
DataContext.SaveChanges();
}
The problem is that the line DataContext.SaveChanges(); causes an exception whose innerexception says:
The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value
This is where the above code is called
Accommodation existingAccommodation = GetByCode(code, supplierId);
if (existingAccommodation != null)
{
_accommodationRepository.Update(
accommodation, code, existingAccommodation.SupplierId);
}