Subtract date and time from DateTime in CSharp

using System;/*from   w ww.ja va  2  s . c o  m*/
public class MainClass{
  public static void Main(String[] argv){  
    
            System.DateTime date1 = new System.DateTime(1996, 6, 3, 22, 15, 0);
      System.DateTime date2 = new System.DateTime(1996, 12, 6, 13, 2, 0);
      System.DateTime date3 = new System.DateTime(1996, 10, 12, 8, 42, 0);

      System.TimeSpan diff1 = date2.Subtract(date1);
            Console.WriteLine(diff1);

      System.DateTime date4 = date3.Subtract(diff1);
      Console.WriteLine(date4);

      System.TimeSpan diff2 = date2 - date3;
      Console.WriteLine(diff2);

      System.DateTime date5 = date1 - diff2;
            Console.WriteLine(date5);

  }
}