using System;

public class Program

{

    public static void Main()

    {

        var dt = new DateTime(2000,1,1,1,0,0);

        dt = dt.AddTicks((new TimeSpan(10,15,15)).Ticks);

        var dt1 = new DateTime(2000,1,1,1,1,10);        

        var dt2 = new DateTime(2000,1,1,1,1,30);

        var m = dt1.Subtract(dt2).TotalSeconds;

        Console.WriteLine(m.ToString());

        Console.WriteLine(dt.ToString());

    }

}