diff -r e3613c0d3600 -r 5ac2bdefa173 QTfrontend/hwconsts.h
--- a/QTfrontend/hwconsts.h	Fri Mar 30 17:01:30 2018 +0200
+++ b/QTfrontend/hwconsts.h	Fri Mar 30 11:56:16 2018 -0400
@@ -67,6 +67,7 @@
 #define SEASON_CHRISTMAS 2
 #define SEASON_HWBDAY 4
 #define SEASON_EASTER 8
+#define SEASON_APRIL1 16
 
 #define NETGAME_DEFAULT_SERVER "netserver.hedgewars.org"
 #define NETGAME_DEFAULT_PORT 46631