Demonstration for StackOverflow question 33579361

Program.cs

using System;
using System.Globalization;
using NodaTime;
using NodaTime.Text;

namespace ConsoleApplication10
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Time Zone: " + TimeZoneInfo.Local.DisplayName);
            Console.WriteLine();

            //var input = "2015-11-06T18:34:07+05:30";
            var input = "2015-11-07T08:00:00-05:00";

            {
                DateTime dt = DateTime.Parse(input,
                   CultureInfo.InvariantCulture,
                   DateTimeStyles.AdjustToUniversal);
                Console.WriteLine("Test 1: {0} {1}", dt, dt.Kind);
            }
            {
                DateTime dt = DateTime.ParseExact(input,
                                      "yyyy-MM-dd'T'HH:mm:ssK",
                                      CultureInfo.InvariantCulture,
                                      DateTimeStyles.AdjustToUniversal);
                Console.WriteLine("Test 2: {0} {1}", dt, dt.Kind);
            }
            {
                DateTimeOffset dto = DateTimeOffset.Parse(input,
                                              CultureInfo.InvariantCulture);
                DateTime dt = dto.UtcDateTime;
                Console.WriteLine("Test 3: {0} {1}", dt, dt.Kind);
            }
            {

                DateTimeOffset dto = DateTimeOffset.ParseExact(input,
                                                   "yyyy-MM-dd'T'HH:mm:sszzz",
                                                   CultureInfo.InvariantCulture);
                DateTime dt = dto.UtcDateTime;
                Console.WriteLine("Test 4: {0} {1}", dt, dt.Kind);
            }
            {
                OffsetDateTimePattern pattern = OffsetDateTimePattern.ExtendedIsoPattern;
                OffsetDateTime odt = pattern.Parse(input).Value;
                DateTimeOffset dto = odt.ToDateTimeOffset();
                DateTime dt = dto.UtcDateTime;
                Console.WriteLine("Test 5: {0} {1}", dt, dt.Kind);
            }
            Console.WriteLine();
        }
    }
}

Output:

Note the time zone has no bearing on the results. I can change it and I still get the same output: