using System;

public class Program

{

    public static void Main()

    {

        DateTime createDate0 = DateTime.Parse("9/17/2020 8:51 AM");

        DateTime activeDate1 = DateTime.Parse("9/24/2020 2:46 PM");

        DateTime newDate2 = DateTime.Parse("9/24/2020 2:47 PM");

        DateTime activeDate3 = DateTime.Parse("10/12/2020 9:20 AM");

        DateTime closedDate4 = DateTime.Parse("10/14/2020 9:44 AM");

        DateTime activeDate5 = DateTime.Parse("10/14/2020 3:10 PM");

        DateTime resolvedDate6 = DateTime.Parse("10/16/2020 4:47 PM");

        DateTime closedDate7 = DateTime.Parse("10/20/2020 10:18 AM");

​

        double daysInNew = activeDate1.Subtract(createDate0).TotalDays + activeDate3.Subtract(newDate2).TotalDays;

        double daysInActive = newDate2.Subtract(activeDate1).TotalDays + closedDate4.Subtract(activeDate3).TotalDays + resolvedDate6.Subtract(activeDate5).TotalDays;

        double daysInResolved = closedDate7.Subtract(resolvedDate6).TotalDays;

        Console.WriteLine("Time in New: " + daysInNew + " days");

        Console.WriteLine("Time in Active: " + daysInActive + " days");

        Console.WriteLine("Time in Resolved: " + daysInResolved + " days");

        Console.WriteLine();

        Console.WriteLine("Created to Activated: " + daysInNew + " days");

        Console.WriteLine("Activated to Resolved: " + daysInActive + " days");

        Console.WriteLine("Resolved to Closed: " + daysInResolved + " days");

        Console.WriteLine("Created to Resolved: " + (daysInNew + daysInActive) + " days");

        Console.WriteLine("Activated to Closed: " + (daysInActive + daysInResolved) + " days");

        Console.WriteLine("Created to Closed: " + (daysInNew + daysInActive + daysInResolved) + " days");

    }

}