New exercises for the final module

src/Module 3/Dates and Times in .NET/Dates and Times in .NET/Program.cs

@@ -1,89 +1,21 @@
 using System;
-using System.Globalization;
 
-namespace Dates_and_Times_in_.NET
+namespace Dates_and_Times_in.NET
 {
     class Program
     {
-        private static Calendar calendar = CultureInfo.InvariantCulture.Calendar;
-
         static void Main(string[] args)
         {
-            #region Calculating time difference and working with TimeSpan 
             var start = DateTimeOffset.UtcNow;
             var end = start.AddSeconds(45);
 
-            TimeSpan difference = end - start;
-
-            difference = difference.Multiply(2);
-
-            Console.WriteLine(difference.TotalMinutes);
-            #endregion
-
-            #region Getting the week number 
-            start = new DateTimeOffset(2007, 12, 31, 0, 0, 0, TimeSpan.Zero);
-
-            var week = calendar.GetWeekOfYear(start.DateTime,
-                CalendarWeekRule.FirstFourDayWeek,
-                DayOfWeek.Monday);
-
-            Console.WriteLine(week);
-
-            // Only for .NET Core 3.0
-            // var isoWeek = ISOWeek.GetWeekOfYear(start.DateTime);
-
-            // Console.WriteLine(isoWeek);
-
-            var isoWeekHack = GetIso8601WeekOfYear(start.DateTime);
-
-            Console.WriteLine(isoWeekHack);
-            #endregion
-
-            #region Extending a date 
-            var contractDate = new DateTimeOffset(2019, 7, 1, 0, 0, 0, TimeSpan.Zero);
-
-            contractDate = contractDate.AddMonths(6).AddTicks(-1);
+            TimeSpan difference = start - end;
+
+            Console.WriteLine(difference.TotalSeconds);
 
-            Console.WriteLine(contractDate);
-
-            contractDate = new DateTimeOffset(2020, 2, 29, 0, 0, 0, TimeSpan.Zero);
-
-            Console.WriteLine(contractDate);
-
-            contractDate = contractDate.AddMonths(1);
-
-            Console.WriteLine(contractDate);
-            #endregion
-        }
-
-        public static DateTimeOffset ExtendContract(DateTimeOffset current, int months)
-        {
-            var future = current.AddMonths(months).AddTicks(-1);
-
-            return new DateTimeOffset(future.Year,
-                future.Month,
-                DateTime.DaysInMonth(future.Year, future.Month),
-                23, 59, 59,
-                current.Offset);
-        }
-
-        // Code snippet from: https://blogs.msdn.microsoft.com/shawnste/2006/01/24/iso-8601-week-of-year-format-in-microsoft-net/
-        // This presumes that weeks start with Monday.
-        // Week 1 is the 1st week of the year with a Thursday in it.
-        public static int GetIso8601WeekOfYear(DateTime time)
-        {
-            // Seriously cheat.  If its Monday, Tuesday or Wednesday, then it'll 
-            // be the same week# as whatever Thursday, Friday or Saturday are,
-            // and we always get those right
-            DayOfWeek day = calendar.GetDayOfWeek(time);
-            if (day >= DayOfWeek.Monday && day <= DayOfWeek.Wednesday)
-            {
-                time = time.AddDays(3);
-            }
+            var timeSpan = new TimeSpan(1, 61, 0)
 
-            // Return the week of our adjusted day
-            return calendar.GetWeekOfYear(time, CalendarWeekRule.FirstFourDayWeek,
-                DayOfWeek.Monday);
+            Console.WriteLine(timeSpan.Hours);
         }
     }
 }