Clarify DateTime implicit conversion example (#850)

* Clarify DateTime implicit conversion example

It took some time for me to understand why the last example has -08:00 as offset. Since the example seemed to be about the addition of a TimeSpan the change in offset was quite confusing. 

Therefore, I split the example into two parts, one only focusing on the addition of a TimeSpan and the second on the adaption of the daylight time specific time zone. 

I also fixed a typo in the year given in line 84.

* Clarify DateTime implicit conversion VB example

Adaption of changes made to the C# example in commit e1833f1 to the Visual Basic sample base.
This change was made based on the feedback received to [PR #850](#850 (comment))

Author: Crown0815

snippets/csharp/VS_Snippets_CLR_System/system.DateTimeOffset.Operators/cs/Operators.cs

@@ -81,7 +81,7 @@ private static void ShowImplicitConversions()
    {
       // <Snippet7>
       DateTimeOffset timeWithOffset; 
-      timeWithOffset = new DateTime(1008, 7, 3, 18, 45, 0);
+      timeWithOffset = new DateTime(2008, 7, 3, 18, 45, 0);
       Console.WriteLine(timeWithOffset.ToString());
 
       timeWithOffset = DateTime.UtcNow;
@@ -91,15 +91,22 @@ private static void ShowImplicitConversions()
                                             DateTimeKind.Unspecified);
       Console.WriteLine(timeWithOffset.ToString());
 
-      timeWithOffset = new DateTime(2008, 1, 1, 2, 30, 0) + 
-                       new TimeSpan(1, 0, 0, 0);
+      timeWithOffset = new DateTime(2008, 7, 1, 2, 30, 0) +
+                             new TimeSpan(1, 0, 0, 0);
+      Console.WriteLine(timeWithOffset.ToString());
+       
+      timeWithOffset = new DateTime(2008, 1, 1, 2, 30, 0)
       Console.WriteLine(timeWithOffset.ToString());
       // The example produces the following output if run on 3/20/2007 
       // at 6:25 PM on a computer in the U.S. Pacific Daylight Time zone:
       //       7/3/2008 6:45:00 PM -07:00
       //       3/21/2007 1:25:52 AM +00:00
       //       3/20/2007 6:25:52 PM -07:00
-      //       1/2/2008 2:30:00 AM -08:00      
+      //       7/2/2008 2:30:00 AM -07:00
+      //       1/1/2008 2:30:00 AM -08:00
+      //
+      // The last example shows automatic adaption to the U.S. Pacific Time 
+      // for winter dates.
       // </Snippet7>
    }
 

snippets/visualbasic/VS_Snippets_CLR_System/system.DateTimeOffset.Operators/vb/Operators.vb

@@ -121,14 +121,21 @@ Module modMain
       timeWithOffset = Date.SpecifyKind(Date.Now, DateTimeKind.Unspecified)
       Console.WriteLine(timeWithOffset.ToString())
 
-      timeWithOffset = #1/1/2008 2:30AM# + New TimeSpan(1, 0, 0, 0)
+      timeWithOffset = #07/01/2008 2:30AM# + New TimeSpan(1, 0, 0, 0)
+      Console.WriteLine(timeWithOffset.ToString())
+        
+      timeWithOffset = #01/01/2008 2:30AM#
       Console.WriteLine(timeWithOffset.ToString())
       ' The example produces the following output if run on 3/20/2007 
       ' at 6:25 PM on a computer in the U.S. Pacific Daylight Time zone:
       '       7/3/2008 6:45:00 PM -07:00
       '       3/21/2007 1:25:52 AM +00:00
       '       3/20/2007 6:25:52 PM -07:00
-      '       1/2/2008 2:30:00 AM -08:00      
+      '       7/2/2008 2:30:00 AM -07:00
+      '       1/1/2008 2:30:00 AM -08:00
+      '
+      ' The last example shows automatic adaption to the U.S. Pacific Time
+      ' for winter dates.
       ' </Snippet7>
    End Sub