entity-framework - Entity framework adds 2 milliseconds to a date attribute, why?

Question

Why does Entity Framework add 2 milliseconds to a date attribute

foreach (var msg in msgs)
           {
               msg.Status = (int)StaticsParams.MessageStatus.Deleted;
               msg.LastUpdate = deletedDate;
               rep.Update(msg);
           }

           rep.UnitOfWork.SaveChanges();