using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using Newtonsoft.Json;

using Newtonsoft.Json.Serialization;

using System.Dynamic;

public class Program

{

    public static void Main()

    {

        string date = "9/8/2016 14:00";

        DateTime parsedDate = DateTime.Parse(date);

        Console.WriteLine(parsedDate.ToString("yyyy-MM-ddTHH:mm:ssZ"));

        date = "2016-09-08";

        parsedDate = DateTime.Parse(date);

        Console.WriteLine(parsedDate.ToString("yyyy-MM-ddTHH:mm:ssZ"));

        date = "09/8/2016 14:00";

        parsedDate = DateTime.Parse(date);

        Console.WriteLine(parsedDate.ToString("yyyy-MM-ddTHH:mm:ssZ"));

        date = "9/8/2016 14:00";

        parsedDate = DateTime.Parse(date);

        Console.WriteLine(parsedDate.ToString("yyyy-MM-ddTHH:mm:ssZ"));

    }   

}