using System;

public class Program

{

    public static void Main()

    {

        TimeSpan t = DateTime.Parse("2015/4/19 9:16:40 AM") - new DateTime(1970, 1, 1);

        int secondsSinceEpoch = (int)t.TotalSeconds;

        Console.WriteLine( secondsSinceEpoch);

        Console.WriteLine(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddSeconds( secondsSinceEpoch)   );

    }

}