using System;

public class Program

{

    public static void Main()

    {

        DateTimeOffset orchestrationDate = DateTimeOffset.Now;

        Console.WriteLine($"Hello World_{orchestrationDate:o}");

        Console.WriteLine($"Hello World_{ToFileFriendlyString(orchestrationDate)}");

        //var str = orchestrationDate.ToString("U", System.Globalization.CultureInfo.InvariantCulture);

        var str = orchestrationDate.ToString("ddd, dd MMM yyyy HH':'mm':'ss zzz");

        Console.WriteLine($"Hello World " + str);

        var encoded = System.Web.HttpUtility.UrlEncode("http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4");

        Console.WriteLine($"Hello World: " + encoded);

    }

    private static string ToFileFriendlyString(DateTimeOffset value) 

            => string.Concat(

                value.ToString("yyyyMMdd-HHmmss-ffffff"),

                value.Offset.Ticks < 0 ? "-" : "+",

                value.Offset.ToString("hhmm"));

}