using System;

using NodaTime;

using Newtonsoft.Json;

using System.Xml;

public class Program

{

    public static void Main()

    {

        string json = "{ \"created\": 1414763125 }";

        var alert = JsonConvert.DeserializeObject<Alert>(json);

        Console.WriteLine(alert.Created.ToString("s"));

    }

}

​

public class UnixTimestampJsonConverter : JsonConverter

{

    public override object ReadJson(

        JsonReader reader,

        Type objectType,

        object existingValue,

        JsonSerializer serializer)

    {

        long ts = serializer.Deserialize<long>(reader);

        return TimeUtils.GetMbtaDateTime(ts);

    }

    public override  bool CanConvert(Type type)

    {

        return typeof(DateTime).IsAssignableFrom(type);

    }

    public override void WriteJson(

        JsonWriter writer,

        object value,

        JsonSerializer serializer)

    {

        throw new NotImplementedException();

    }

    public override bool CanRead

    { 

        get { return true; } 

    }

}

​

public class Alert

{

    [JsonConverter(typeof(UnixTimestampJsonConverter))]

    public DateTime Created { get; set; }

}

​

​

static class TimeUtils

{

    static readonly DateTimeZone mbtaTimeZone = DateTimeZoneProviders.Tzdb["America/New_York"];

    static readonly DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);

    public static DateTime GetMbtaDateTime (long unixTimestamp)

    {

        var mbtaEpochTime = epoch.AddSeconds (unixTimestamp);

        var instant = Instant.FromUtc (mbtaEpochTime.Year, mbtaEpochTime.Month,

                                       mbtaEpochTime.Day, mbtaEpochTime.Hour, mbtaEpochTime.Minute);

        var nodaTime = instant.InZone (mbtaTimeZone);

        return nodaTime.ToDateTimeUnspecified ();

    }

}