Who knows what we will do next year,

but this minor bug has been fixed anyway :)

src/main/java/com/gmail/nossr50/util/Anniversary.java

@@ -102,8 +102,8 @@ public final class Anniversary {
                         }
                     }, 20 * delay);
                 }
+                hasCelebrated.add(sender.getName());
             }
-            hasCelebrated.add(sender.getName());
         }
     }