using System;

using System.Web;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json;

using System.Collections;

using System.Collections.Generic;

using System.Reflection;

using System.Reflection.Metadata;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var dto1 = DateTimeOffset.Parse("2022-01-01T00:00:00 +02:00");

        var dto2 = DateTimeOffset.Parse("2022-01-01T00:00:00 +06:00");

        var data = JsonConvert.SerializeObject(new

        {

            dto1,

            dto2

        });

        Console.WriteLine(data);

    }

}