diff --git a/rules/salon.lampka-stolowa.rules b/rules/salon.lampka-stolowa.rules
index 36e1ad1..092ca2b 100644
--- a/rules/salon.lampka-stolowa.rules
+++ b/rules/salon.lampka-stolowa.rules
@@ -1,4 +1,8 @@
-
+/*
+ * dla gdańska
+ * shortest day (Dec 21): 8.04 - 15:22
+ * longest day  (Jun 21): 4:10 - 21:23
+*/
 
 rule "Zapal stółlampkę rano"
 when