diff --git a/crontab.txt b/crontab.txt
index 02ee9ac..5039811 100644
--- a/crontab.txt
+++ b/crontab.txt
@@ -21,11 +21,14 @@
 #
 # m h  dom mon dow   command
 
-# in foam's crontab. check timezone and clock sync
+# in foam's crontab.
 
-# around seven AM UTC i.e. startup w/out ntp sync
-0 7 * * * screen -S test -m -d /home/foam/ephemeral-garden/setup-12min.sh
+# turn supercollider off at 20h UTC (i.e 10pm CEST)
+0 20 * * * killall sclang
 
-# on reboot (and/or power failure?)
+# around 4h UTC (i.e. 6am CEST)  startup w/out ntp sync
+0 8 * * * screen -S test -m -d /home/foam/ephemeral-garden/setup-12min.sh
 
+# start on reboot (and/or power failure?)
 @reboot	screen -S test -m -d /home/foam/ephemeral-garden/setup-12min.sh
+