diff --git a/tests/zfs-tests/tests/functional/delegate/delegate_common.kshlib b/tests/zfs-tests/tests/functional/delegate/delegate_common.kshlib
index 073a39f835f..e39b015b21b 100644
--- a/tests/zfs-tests/tests/functional/delegate/delegate_common.kshlib
+++ b/tests/zfs-tests/tests/functional/delegate/delegate_common.kshlib
@@ -379,7 +379,7 @@ function verify_send
 	typeset dtst=$3
 
 	typeset oldval
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset snap=$dtst@snap.$stamp
 
 	typeset -i ret=1
@@ -408,7 +408,7 @@ function verify_fs_receive
 	typeset fs=$3
 
 	typeset dtst
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset newfs=$fs/newfs.$stamp
 	typeset newvol=$fs/newvol.$stamp
 	typeset bak_user=$TEST_BASE_DIR/bak.$user.$stamp
@@ -480,7 +480,7 @@ function verify_userprop
 	typeset perm=$2
 	typeset dtst=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 
 	user_run $user zfs set "$user:ts=$stamp" $dtst
 	zpool sync ${dtst%%/*}
@@ -565,7 +565,7 @@ function verify_fs_create
 	typeset perm=$2
 	typeset fs=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset newfs=$fs/nfs.$stamp
 	typeset newvol=$fs/nvol.$stamp
 
@@ -693,7 +693,7 @@ function verify_fs_snapshot
 	typeset perm=$2
 	typeset fs=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset snap=$fs@snap.$stamp
 	typeset mntpt=$(get_prop mountpoint $fs)
 
@@ -737,7 +737,7 @@ function verify_fs_rollback
 	typeset fs=$3
 
 	typeset oldval
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset snap=$fs@snap.$stamp
 	typeset mntpt=$(get_prop mountpoint $fs)
 
@@ -770,7 +770,7 @@ function verify_fs_clone
 	typeset perm=$2
 	typeset fs=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basefs=${fs%/*}
 	typeset snap=$fs@snap.$stamp
 	typeset clone=$basefs/cfs.$stamp
@@ -815,7 +815,7 @@ function verify_fs_rename
 	typeset perm=$2
 	typeset fs=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basefs=${fs%/*}
 	typeset snap=$fs@snap.$stamp
 	typeset renamefs=$basefs/nfs.$stamp
@@ -898,7 +898,7 @@ function verify_fs_mount
 	typeset perm=$2
 	typeset fs=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset mntpt=$(get_prop mountpoint $fs)
 	typeset newmntpt=$TEST_BASE_DIR/mnt.$stamp
 
@@ -966,7 +966,7 @@ function verify_fs_mountpoint
 	typeset perm=$2
 	typeset fs=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset mntpt=$(get_prop mountpoint $fs)
 	typeset newmntpt=$TEST_BASE_DIR/mnt.$stamp
 
@@ -1005,7 +1005,7 @@ function verify_fs_promote
 	typeset perm=$2
 	typeset fs=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basefs=${fs%/*}
 	typeset snap=$fs@snap.$stamp
 	typeset clone=$basefs/cfs.$stamp
@@ -1061,7 +1061,7 @@ function verify_fs_canmount
 	typeset fs=$3
 
 	typeset oldval
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 
 	if ! ismounted $fs ; then
 		set -A modes "on" "off"
@@ -1372,7 +1372,7 @@ function verify_vol_snapshot
 	typeset perm=$2
 	typeset vol=$3
 
-	typeset stamp=${perm}.${user}.$(date +'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basevol=${vol%/*}
 	typeset snap=$vol@snap.$stamp
 
@@ -1397,7 +1397,7 @@ function verify_vol_rollback
 	typeset perm=$2
 	typeset vol=$3
 
-	typeset stamp=${perm}.${user}.$(date+'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basevol=${vol%/*}
 	typeset snap=$vol@snap.$stamp
 
@@ -1432,7 +1432,7 @@ function verify_vol_clone
 	typeset perm=$2
 	typeset vol=$3
 
-	typeset stamp=${perm}.${user}.$(date+'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basevol=${vol%/*}
 	typeset snap=$vol@snap.$stamp
 	typeset clone=$basevol/cvol.$stamp
@@ -1478,7 +1478,7 @@ function verify_vol_rename
 	typeset perm=$2
 	typeset vol=$3
 
-	typeset stamp=${perm}.${user}.$(date+'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basevol=${vol%/*}
 	typeset snap=$vol@snap.$stamp
 	typeset clone=$basevol/cvol.$stamp
@@ -1525,7 +1525,7 @@ function verify_vol_promote
 	typeset perm=$2
 	typeset vol=$3
 
-	typeset stamp=${perm}.${user}.$(date+'%F-%T-%N')
+	typeset stamp=${perm}.${user}.$RANDOM
 	typeset basevol=${vol%/*}
 	typeset snap=$vol@snap.$stamp
 	typeset clone=$basevol/cvol.$stamp
diff --git a/tests/zfs-tests/tests/functional/delegate/zfs_allow_009_neg.ksh b/tests/zfs-tests/tests/functional/delegate/zfs_allow_009_neg.ksh
index 45fdb5b8569..a6f12244ce2 100755
--- a/tests/zfs-tests/tests/functional/delegate/zfs_allow_009_neg.ksh
+++ b/tests/zfs-tests/tests/functional/delegate/zfs_allow_009_neg.ksh
@@ -51,7 +51,6 @@ longset="set123456789012345678901234567890123456789012345678901234567890123"
 for dtst in $DATASETS ; do
 	log_mustnot eval "zfs allow -s @$longset $dtst"
 	# Create non-existent permission set
-	typeset timestamp=$(date +'%F-%R:%S')
 	log_mustnot zfs allow -s @non-existent $dtst
 	log_mustnot zfs allow $STAFF "atime,created,mounted" $dtst
 	log_mustnot zfs allow $dtst $TESTPOOL