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CSharp · Console

/Program.cs

using System;
using Newtonsoft.Json;		
class Program
{
    static void Main(string[] args)
    {
        var json = "{\"MyDateTime\": \"0001-01-01T00:00:00+01:00\"}";
        		
		var newtonDeserialized = JsonConvert.DeserializeObject<Class>(json);

		//Bad things happen here.
		var systemDeserialized =  System.Text.Json.JsonSerializer.Deserialize<Class>(json);
		
        Console.WriteLine(newtonDeserialized.MyDateTime);
		Console.WriteLine(systemDeserialized.MyDateTime);
    }
}

class Class
{
    public DateTime MyDateTime {get; set;}
}