using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        DateTime startDate = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(1485444898035).ToLocalTime();

        //1485444898035                                                                                                                                                                                                 

        Console.WriteLine(startDate);

​

    }

}