Index: src/Libraries/Migo/Migo.Syndication/Rfc822DateTime.cs
===================================================================
--- src/Libraries/Migo/Migo.Syndication/Rfc822DateTime.cs	(revision 5014)
+++ src/Libraries/Migo/Migo.Syndication/Rfc822DateTime.cs	(working copy)
@@ -94,7 +94,7 @@
 				ret = new DateTime (year, month, day, hours, minutes, seconds);
                                 
                 if (timeZone != String.Empty) {
-                    ret += ParseGmtOffset (timeZone);
+                    ret -= ParseGmtOffset (timeZone);
                 }
 				
                 return ret.ToLocalTime ();
