diff --git a/bin/beat b/bin/beat
new file mode 100755
index 0000000..980eb21
--- /dev/null
+++ b/bin/beat
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+b=$(echo "(($(date +'%s')+3600)%86400)/86.4" | bc)
+printf "%03d" "${b}"