How do I retrieve birh day and hire date from active directory in C#,

using (SPSite site = new SPSite(SPContext.Current.Web.Url))
            {
                SPServiceContext serviceContext = SPServiceContext.GetContext(site);
                UserProfileManager profileManager = new UserProfileManager(serviceContext);
                foreach (UserProfile profile in profileManager)
                {
                    var name = profile.DisplayName.ToString();
                    var BirthDateTime = Convert.ToDateTime(profile["SPS-Birthday"].Value).ToLocalTime();
                    var HireDate = Convert.ToDateTime(profile["SPS-HireDate"].Value).ToLocalTime();
                    Console.WriteLine("Name: " + name.ToString());
                    Console.WriteLine("Birthday: " + BirthDateTime);
                    Console.WriteLine("Hire date: " + HireDate);
                }
            }