using System;

public class Program

{

    public static void Main()

    {

        var datetime = DateTime.Now;

        var datetime2 = DateTime.UtcNow.AddDays(10);

        var timebetween = datetime - datetime2;

        Console.WriteLine(timebetween.ToHMS());

    }

}

public static class Extensions 

{

        public static string ToHMS(this TimeSpan time)

        {

            string converted = null;

            converted += time.Days == 0 ? "" : time.Days == 1 ? $"{time.Days} day " : $"{time.Days} days ";

            converted += time.Hours == 0 ? "" : time.Hours == 1 ? $"{time.Hours} hour " : $"{time.Hours} hours ";

            converted += time.Minutes == 0 ? "" : time.Seconds == 0 ? time.Minutes == 1 ? $"{time.Minutes} minute " : $"{time.Minutes} minutes " : time.Minutes == 1 ? $"{time.Minutes} minute and " : $"{time.Minutes} minutes and ";

            converted += time.Seconds == 0 ? "" : time.Seconds == 1 ? $"{time.Seconds} second" : $"{time.Seconds} seconds";

            return converted;

        }

}