title: LINQ group by date descending, and order by time ascending
body: <p>I have the following model:</p>
  
  <pre><code>public class A
  {
    public int? Id {get;set;}
    public DateTime Start {get;set;}
    public DateTime End {get;set;}
  }
  </code></pre>
  
  <p>Now I want to group all the entries by date, and sort them per date descending, and sorting per time ascending (using LINQ). Example output:</p>
  
  <pre><code>Jan 3. 2012
  -- 10:00-11:00
  -- 11:00-13:00
  Jan 2. 2012
  -- 10:00-11:00
  -- 12:00-15:00
  Jan 1. 2012
  -- 9:00-10:00
  -- 12:00-13:00
  </code></pre>
  
  <p>Is it possible to achieve this in LINQ-to-SQL or do I have to this after the query has executed (on the result list)?</p>