LINQ: get the 5 people with the next upcoming birthdays

I needed a list of 5 students ordered by their upcoming birthdays. To make it a little harder, there is a Student table and a Person table where data such as birthday or name are stored. The query I came up with looks like this:

// upcoming birthdays
var geburtstage = (
	from student in DbContext.Student
	join person in DbContext.Person on student.PersonId equals person.PersonId

	orderby 
		(new DateTime(DateTime.Today.Year, person.Geburtsdatum.Month, person.Geburtsdatum.Day) > DateTime.Now ? 1 : 0) descending, 
		(new DateTime(DateTime.Today.Year, person.Geburtsdatum.Month, person.Geburtsdatum.Day) > DateTime.Now) ? new DateTime(DateTime.Today.Year, person.Geburtsdatum.Month, person.Geburtsdatum.Day) : new DateTime(DateTime.Today.Year + 1, person.Geburtsdatum.Month, person.Geburtsdatum.Day) ascending
		
	select new {
		Geburtsdatum = (new DateTime(DateTime.Today.Year, person.Geburtsdatum.Month, person.Geburtsdatum.Day) > DateTime.Now) ? new DateTime(DateTime.Today.Year, person.Geburtsdatum.Month, person.Geburtsdatum.Day) : new DateTime(DateTime.Today.Year + 1, person.Geburtsdatum.Month, person.Geburtsdatum.Day),
		student.StudentId,
		person.PersonId,
		person.Firstname,
		person.Lastname
	}
).Take(5);