diff --git a/scripts/jannet b/scripts/jannet
index ed8b70ad..f1606c08 100644
--- a/scripts/jannet
+++ b/scripts/jannet
@@ -20,16 +20,18 @@ cat << EOT
 
   command is one of
 
-    help:     show this help screen
-    init:     initialize
-    uninit:   undo initialization
-    install:  install packages in [arguments]
-    update:   update all jannet software on the system
-    restore:  restore a previous jannet software version state
-    info:     query information about installed software
-    checklog: update the installation log file if necessary
-    rpmnew:   remove superfluous rpmnew files and show conflicts
-              for others
+    help:         show this help screen
+    init:         initialize
+    uninit:       undo initialization
+    install:      install packages in [arguments]
+    update:       update all jannet software on the system
+    restore:      restore a previous jannet software version state
+    info:         query information about installed software
+    checklog:     update the installation log file if necessary
+    rpmnew:       remove superfluous rpmnew files and show conflicts
+                  for others
+	build-date:   show installed jannet packages along with build date
+	built-today:  show installed jannet packages that were built today
 
 EOT
 	if [ "$1" ]; then
@@ -128,6 +130,24 @@ cmd_diff()
 	done
 }
 
+cmd_build_date()
+{
+	list_all_packages |
+		xargs rpm -q --queryformat '%{BUILDTIME} %{NAME}\n' |
+		sort -n |
+		sed 's/-run\|-devel//' |
+		sort -u |
+		while read t p; do
+			echo `date --date=@$t --rfc-3339=seconds` $p
+		done
+}
+
+cmd_built_today()
+{
+	local today=`date +'%Y-%m-%d'`
+	cmd_build_date | grep $today | cut -d' ' -f3
+}
+
 cmd="$1"
 shift
 get_opts $*
@@ -193,10 +213,15 @@ rpmnew)
 diff)
 	cmd_diff $@
 	;;
+build-date)
+	cmd_build_date
+	;;
+built-today)
+	cmd_built_today
+	;;
 help)
 	usage 0
 	;;
-
 *)
 	usage 1
 	;;