Do not convert JToken date time string as DateTime

Use DateParseHandling to override JSON.NET's automatic attempts to DateTimeify anything that looks DateTimey.

void Main()
{
    var s = "{ \"value\" : \"2015-11-23T00:00:00\" }";

    using (var sr = new StringReader(s))
    using (var jr = new JsonTextReader(sr) { DateParseHandling = DateParseHandling.None })
    {
        var j = JToken.ReadFrom(jr);
        Console.WriteLine(j["value"].ToString()); // prints '2015-11-23T00:00:00'
    }
}

You can describe the class with this member declared as 'string' and use it in serialization, so that it is is stored in the original representation:

public class MyObject 
{ 
    public string date { get; set ; }
}

string json = "{ \"date\": \"2015-11-23T00:00:00\" }";
var myObj = JsonConvert.DeserializeObject<MyObject>(json);

Console.WriteLine(myObj.date);