diff --git a/data_common/weather.cfg b/data_common/weather.cfg
new file mode 100644
index 0000000..897e99e
--- /dev/null
+++ b/data_common/weather.cfg
@@ -0,0 +1,14 @@
+///////////////////////////
+///////////////////////////
+/// Weather CONFIG FILE ///
+///////////////////////////
+///////////////////////////
+
+
+RealDayLength = 3000.0;			// real length of the day, in seconds (3000 = 50mn)
+NumHours = 24.0;			// number of ryzom hours in a day
+NightTransitionStartHour = 19.0;	// start of night transition
+NightTransitionEndHour = 21.0;		// end   of night transition
+DawnTransitionStartHour = 5.0;		// start of dawn transition
+DawnTransitionEndHour = 7.0;		// end of dawn transition
+MaxNumColorSteps = 25;			// the max number of color steps