using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        // Create a datetime with no kind specified

        var dateNoKind = new DateTime(2021, 1, 1);

        Console.WriteLine(string.Format("{0} - {1}", dateNoKind.ToString(), dateNoKind.Kind));

        // Convert the datetime to a UTC

        var dateNoKindUtc = dateNoKind.ToUniversalTime();

        Console.WriteLine(string.Format("{0} - {1}", dateNoKindUtc.ToString(), dateNoKindUtc.Kind));

        // Serialize the UTC

        var serializedUtc = JsonConvert.SerializeObject(dateNoKindUtc);

        Console.WriteLine("UTC: " + serializedUtc);

        // Deserialize the UTC

        var deserializedUtc = JsonConvert.DeserializeObject<DateTime>(serializedUtc);

        Console.WriteLine(string.Format("{0} - {1}", deserializedUtc.ToString(), deserializedUtc.Kind));

        // Convert UTC to UTC

        var utc = deserializedUtc.ToUniversalTime();

        Console.WriteLine(string.Format("{0} - {1}", utc.ToString(), utc.Kind));

        /*

        var dateString = DateTime.Parse("2021-03-16 17:22:20Z");

        Console.WriteLine(string.Format("{0} - {1}", dateString.ToString(), dateString.Kind));

        var dateStringUtc = dateString.ToUniversalTime();

        Console.WriteLine(string.Format("{0} - {1}", dateStringUtc.ToString(), dateStringUtc.Kind));

        var dateOffsetString = DateTimeOffset.Parse("2021-03-16 17:22:20Z");

        Console.WriteLine(string.Format("{0} - {1}", dateOffsetString.ToString(), dateOffsetString.DateTime.Kind));

        var dateOffsetStringUtc = dateOffsetString.ToUniversalTime();

        Console.WriteLine(string.Format("{0} - {1}", dateOffsetStringUtc.ToString(), dateOffsetStringUtc.DateTime.Kind));

        var dateString2 = DateTime.Parse("2021-03-16 17:22:20 +00:00");

        Console.WriteLine(string.Format("{0} - {1}", dateString2.ToString(), dateString2.Kind));

        var dateString2Utc = dateString.ToUniversalTime();

        Console.WriteLine(string.Format("{0} - {1}", dateString2Utc.ToString(), dateString2Utc.Kind));

        */

    }

}