using System;
using System.Globalization;
using System.Linq;
using System.Collections.Generic;

public class Test
{
    

	public static void Main()
	{
        var date = new DateTime(2013, 07, 22, 09, 43, 21);
        var output = date.ToString("yyyy/MM/ddThh:mm:ss", CultureInfo.InvariantCulture);
        Console.WriteLine(output);
	}
}