using System;
public class Program
{
public static void Main()
var caseOpenedOn = new DateTime(7,1,1,5,6,0);
var fir = new DateTime(7,1,1,5,5,0);
var openCycleTimeInDays = Math.Abs((fir - caseOpenedOn).TotalDays);
Console.WriteLine($"openCycleTimeInDays: {openCycleTimeInDays}");
}